7Baggers

FuelCell Energy, Inc
(NASDAQ:FCEL) 

FCEL stock logo

FuelCell Energy, Inc., together with its subsidiaries, designs, manufactures, sells, installs, operates, and services stationary fuel cell power plants for distributed baseload power generation. The company offers SureSource product line based on carbonate fuel cell technology in various configurati...

Founded: 1969
Full Time Employees: 301
CEO: Jason Few  
Sector: Industrials
Industry: Electrical Equipment & Parts

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Quarterly
Annual
    Unit: USD2026-04-30 2026-01-31 2025-10-31 2025-07-31 2025-04-30 2025-01-31 2024-10-31 2024-04-30 2024-01-31 2023-10-31 2023-07-31 2023-04-30 2023-01-31 2022-10-31 2022-07-31 2022-04-30 2022-01-31 2021-10-31 2021-07-31 2021-04-30 2021-01-31 2020-10-31 2020-07-31 2020-04-30 2020-01-31 2019-10-31 2019-07-31 2019-04-30 2019-01-31 2018-10-31 2018-07-31 2018-04-30 2018-01-31 2017-10-31 2017-07-31 2017-04-30 2017-01-31 2016-10-31 2016-07-31 2016-04-30 2016-01-31 2015-10-31 2015-07-31 2015-04-30 2015-01-31 2014-10-31 2014-07-31 2014-04-30 2014-01-31 2013-10-31 2013-07-31 2013-04-30 2013-01-31 2012-10-31 2012-07-31 2012-04-30 2012-01-31 2011-10-31 2011-07-31 2011-04-30 2011-01-31 2010-10-31 2010-07-31 2010-04-30 2010-01-31 2009-10-31 2009-07-31 2009-04-30 2009-01-31 2008-10-31 2008-07-31 2008-04-30 2008-01-31 2007-10-31 2007-07-31 2007-01-31 2006-01-31 2005-07-31 
                                                                                  
      revenues:
                                                                                  
      product
    18,018,000 12,042,000 30,030,000 26,000,000 13,027,000 72,000  2,938,000 2,391,000 10,494,000 2,910,000 3,486,000 9,095,000 24,000,000 18,000,000  18,000,000             10,764,500 1,328,000 12,200,000 29,530,000 788,750 611,000 737,000 1,807,000                                          
      service
    4,175,000 3,189,000 7,276,000 3,130,000 8,144,000 1,848,000  1,369,000 1,617,000 -829,000 9,841,000 26,190,000 13,882,000 3,463,750 9,049,000 2,639,000 2,167,000                                                              
      generation
    8,681,000 10,988,000 12,188,000 12,355,000 12,124,000 11,346,000  14,118,000 10,493,000 8,529,000 10,982,000 8,440,000 9,557,000 8,763,000 10,877,000 9,050,000 7,496,000 6,721,000 6,230,000 6,185,000 4,891,000 3,698,750 4,722,000 4,631,000 5,442,000 2,140,000 5,448,000 1,633,000 1,479,000 1,332,250 1,695,000 1,742,000 1,892,000 1,352,250 1,690,000 1,634,000 2,085,000                                          
      advanced technologies
    4,715,000 4,312,000 5,522,000 5,258,000 4,111,000 5,731,000  6,933,000 4,581,000 4,268,000 4,687,000 3,719,000 4,539,000 7,507,000 5,178,000 4,695,000 4,132,000 7,340,000 6,246,000 7,108,000 5,073,000 4,845,000 6,893,000 7,277,000 5,210,000 3,821,250 5,768,000 4,985,000 4,532,000 2,576,750 3,538,000 3,682,000 3,087,000 3,719,000 3,248,000 5,454,000 6,174,000                                          
      total revenues
    35,589,000 30,531,000 55,016,000 46,743,000 37,406,000 18,997,000  22,420,000 16,691,000 22,462,000 25,510,000 38,349,000 37,073,000 39,201,000 43,104,000 16,384,000 31,795,000 13,935,000 26,820,000 13,953,000 14,877,000 16,999,000 18,728,000 18,880,000 16,264,000 11,041,000 22,712,000 9,216,000 17,783,000 17,884,000 12,110,000 20,830,000 38,613,000 47,889,000 10,358,000 20,417,000 17,002,000 86,536,000 21,716,000 28,581,000 33,482,000 121,721,000 41,356,000 28,600,000 41,670,000 137,117,000 43,176,000 38,274,000 44,434,000 133,951,000 53,707,000 42,436,000 36,358,000 90,910,000 29,693,000 24,153,000 31,337,000 34,723,000 31,160,000 28,607,000 28,080,000 19,701,000 18,873,000 16,587,000 14,616,000 20,412,000 23,017,000 22,864,000 21,723,000 26,169,000 27,904,000 31,643,000 15,019,000 16,473,000 13,544,000 6,834,000 5,944,000 8,742,000 
      yoy
    -4.86% 60.71%  108.49% 124.11% -15.43%  -41.54% -54.98% -42.70% -40.82% 134.06% 16.60% 181.31% 60.72% 17.42% 113.72% -18.02% 43.21% -26.10% -8.53% 53.96% -17.54% 104.86% -8.54% -38.26% 87.55% -55.76% -53.95% -62.66% 16.91% 2.02% 127.11% -44.66% -52.30% -28.56% -49.22% -28.91% -47.49% -0.07% -19.65% -11.23% -4.22% -25.28% -6.22% 2.36% -19.61% -9.81% 22.21% 47.34% 80.87% 75.70% 16.02% 161.81% -4.71% -15.57% 11.60% 76.25% 65.10% 72.47% 92.12% -3.48% -18.00% -27.45% -32.72% -22.00% -17.51% -27.74% 44.64% 58.86% 106.02% 363.02% 152.67% 88.44%     
      qoq
    16.57% -44.51% 17.70% 24.96% 96.90%   34.32% -25.69% -11.95% -33.48% 3.44% -5.43% -9.05% 163.09% -48.47% 128.17% -48.04% 92.22% -6.21% -12.48% -9.23% -0.81% 16.08% 47.31% -51.39% 146.44% -48.18% -0.56% 47.68% -41.86% -46.05% -19.37% 362.34% -49.27% 20.09% -80.35% 298.49% -24.02% -14.64% -72.49% 194.32% 44.60% -31.37% -69.61% 217.58% 12.81% -13.86% -66.83% 149.41% 26.56% 16.72% -60.01% 206.17% 22.94% -22.92% -9.75% 11.43% 8.92% 1.88% 42.53% 4.39% 13.78% 13.49% -28.40% -11.32% 0.67% 5.25% -16.99% -6.22% -11.82% 110.69% -8.83% 21.63% 98.19% 14.97% -32.01%  
      costs of revenues:
                                                                                  
      total costs of revenues
    48,518,000 36,388,000 61,648,000 51,877,000 46,844,000 24,201,000  29,494,000 28,416,000 23,926,000 33,725,000 44,442,000 31,836,000 54,391,000 47,284,000 23,694,000 34,690,000 22,300,000 25,720,000 18,709,000 18,495,000 13,388,000 21,856,000 18,713,000 12,983,000 11,897,750 14,747,000 12,856,000 19,988,000 17,400,750 14,166,000 21,459,000 33,978,000 12,051,750 12,984,000 20,034,000 15,189,000 5,320,500 21,282,000 28,738,000 33,648,000 9,440,250 37,761,000 26,577,000 37,656,000 9,803,750 39,215,000 36,663,000 42,235,000 12,296,250 49,185,000 40,122,000 38,669,000 8,107,750 32,431,000 23,952,000 29,233,000                      
      gross loss
    -12,929,000 -5,857,000 -6,632,000 -5,134,000 -9,438,000 -5,204,000  -7,074,000  -1,464,000 -8,215,000 -6,093,000  -15,190,000  -7,310,000 -2,895,000           -3,640,000   -2,056,000                       -108.25                         
      operating expenses:
                                                                                  
      administrative and selling expenses
    14,708,000 13,470,000 15,177,000 14,066,000 16,470,000 15,030,000  17,660,000 16,400,000 16,891,000 17,560,000 15,068,000 15,009,000 15,263,000 14,158,000 13,234,000 36,965,000 10,684,000 8,662,000 9,670,000 8,932,000 7,603,000 6,607,000 7,168,000 5,266,000 8,252,000 7,058,000 9,805,000 6,759,000 5,581,000 6,100,000 7,085,000 6,142,000 7,119,000 6,310,000 6,483,000 6,004,000 19,692,000 5,458,000 7,441,000 6,040,000 18,125,000 6,101,000 6,261,000 5,640,000 17,228,000 5,569,000 5,746,000 4,854,000 16,015,000 5,203,000 5,436,000 5,432,000 13,640,000 4,580,000 4,002,000 3,764,000 4,217,000 3,578,000 4,454,000 4,050,000 4,262,000 4,185,000 4,547,000 4,156,000 4,086,000 4,107,000 4,755,000 4,246,000 4,432,000 4,926,000 5,798,000 4,812,000 4,759,000 4,676,000 4,417,000 4,224,000 4,049,000 
      research and development expenses
    7,709,000 6,963,000 5,456,000 7,646,000 9,896,000 11,081,000  16,627,000 14,353,000 18,021,000 15,620,000 14,697,000 12,683,000 12,213,000 9,659,000 7,673,000 4,984,000 3,505,000 3,023,000 2,964,000 1,823,000 1,474,000 1,027,000 1,141,000 1,155,000 1,351,000 1,977,000 4,178,000 6,280,000 7,432,000 6,318,000 5,021,000 4,046,000 4,226,000 5,394,000 5,386,000 5,392,000 15,547,000 5,299,000 5,110,000 5,311,000 12,845,000 4,597,000 4,555,000 3,504,000 13,848,000 4,392,000 4,638,000 4,915,000 11,804,000 3,913,000 4,075,000 3,327,000 11,161,000 3,193,000 3,956,000 3,783,000 4,106,000 3,918,000 4,498,000 4,246,000 3,581,750 4,618,000 5,089,000 4,620,000 4,220,000 4,150,000 5,053,000 5,737,000 6,314,000 5,741,000 5,931,000 5,484,000 7,000,000 6,980,000 6,855,000 5,884,000 5,732,000 
      restructuring expense
      -256,000 4,051,000 6,000 1,536,000                              10,000 1,345,000                                          
      impairment expense
    42,567,000  1,314,000 64,467,000                                                                           
      total costs and expenses
    64,984,000 20,433,000 21,691,000 90,230,000 26,372,000 27,647,000  34,287,000 30,753,000 34,912,000 33,180,000 29,765,000 27,692,000 27,476,000 23,817,000 20,907,000 41,949,000 14,189,000 11,685,000 12,634,000 10,755,000 5,591,000 7,634,000 8,309,000 6,421,000 9,014,250 9,035,000 13,983,000 13,039,000 8,678,000 12,418,000 12,106,000 10,188,000 9,081,000 11,704,000 11,879,000 12,741,000 2,689,250 10,757,000 12,551,000 11,351,000 2,674,500 10,698,000 10,816,000 9,144,000 2,490,250 9,961,000 10,384,000 9,769,000 2,279,000 9,116,000 9,511,000 8,759,000 1,943,250 7,773,000 7,958,000 7,547,000 31,410,000 38,519,000 48,429,000 38,692,000 31,802,000 31,432,000 32,023,000 28,885,000 34,460,000 37,504,000 41,259,000 41,158,000 48,992,000 54,050,000 56,347,000 34,147,000 33,587,000 31,277,000 26,598,000 22,381,000 27,273,000 
      income from operations
    -77,913,000 -26,290,000 -28,323,000 -95,364,000 -35,810,000 -32,851,000  -41,361,000 -42,478,000 -36,376,000 -41,395,000 -35,858,000 -22,455,000 -42,666,000 -27,997,000 -28,217,000 -44,844,000 -22,554,000 -10,585,000 -17,390,000 -14,373,000 -17,122,000 -10,762,000 -8,142,000 -3,140,000 -32,992,000 -1,070,000 -17,623,000 -15,244,000 -11,870,000 -14,474,000 -12,735,000 -5,553,000 -8,181,000 -14,330,000 -11,496,000 -10,928,000 -36,030,000 -10,323,000 -12,708,000 -11,517,000 -21,789,000 -7,103,000 -8,793,000 -5,130,000 -21,311,000 -6,000,000 -8,773,000 -7,570,000 -25,219,000 -4,594,000 -7,197,000 -11,070,000 -21,618,000 -10,511,000 -7,757,000 -5,443,000 -7,884,000 -7,359,000 -19,822,000 -10,612,000 -12,101,000 -12,559,000 -15,436,000 -14,269,000 -14,048,000 -14,487,000 -18,395,000 -19,435,000 -22,823,000 -26,146,000 -24,704,000  -17,114,000 -17,733,000 -19,764,000 -16,437,000  
      yoy
    117.57% -19.97%  130.57% -15.70% -9.69%  15.35% 89.17% -14.74% 47.86% 27.08% -49.93% 89.17% 164.50% 62.26% 212.00% 31.73% -1.64% 113.58% 357.74% -48.10% 905.79% -53.80% -79.40% 177.94% -92.61% 38.38% 174.52% 45.09% 1.00% 10.78% -49.19% -77.29% 38.82% -9.54% -5.11% 65.36% 45.33% 44.52% 124.50% 2.24% 18.38% 0.23% -32.23% -15.50% 30.61% 21.90% -31.62% 16.66% -56.29% -7.22% 103.38% 174.20% 42.83% -60.87% -48.71% -34.85% -41.40% 28.41% -25.63% -13.86% -13.31% -16.09% -26.58% -38.45% -44.59% -25.54%  33.36% 47.44% 24.99%       
      qoq
    196.36% -7.18% -70.30% 166.31% 9.01%   -2.63% 16.77% -12.12% 15.44% 59.69% -47.37% 52.39% -0.78% -37.08% 98.83% 113.08% -39.13% 20.99% -16.06% 59.10% 32.18% 159.30% -90.48% 2983.36% -93.93% 15.61% 28.42% -17.99% 13.66% 129.34% -32.12% -42.91% 24.65% 5.20% -69.67% 249.03% -18.77% 10.34% -47.14% 206.76% -19.22% 71.40% -75.93% 255.18% -31.61% 15.89% -69.98% 448.96% -36.17% -34.99% -48.79% 105.67% 35.50% 42.51% -30.96% 7.13% -62.87% 86.79% -12.30% -3.65% -18.64% 8.18% 1.57% -3.03% -21.24% -5.35% -14.84% -12.71% 5.84%   -3.49% -10.28% 20.24%   
      operating margin %
    -218.92% -86.11% -51.48% -204.02% -95.73% -172.93% NaN% -184.48% -254.50% -161.94% -162.27% -93.50% -60.57% -108.84% -64.95% -172.22% -141.04% -161.85% -39.47% -124.63% -96.61% -100.72% -57.46% -43.13% -19.31% -298.81% -4.71% -191.22% -85.72% -66.37% -119.52% -61.14% -14.38% -17.08% -138.35% -56.31% -64.27% -41.64% -47.54% -44.46% -34.40% -17.90% -17.18% -30.74% -12.31% -15.54% -13.90% -22.92% -17.04% -18.83% -8.55% -16.96% -30.45% -23.78% -35.40% -32.12% -17.37% -22.71% -23.62% -69.29% -37.79% -61.42% -66.54% -93.06% -97.63% -68.82% -62.94% -80.45% -89.47% -87.21% -93.70% -78.07% 0% -103.89% -130.93% -289.20% -276.53% 0% 
      interest expense
    -2,859,000 -2,758,000 -2,675,000 -2,548,000 -2,548,000 -2,607,000  -2,275,000 -2,338,000 -2,321,000 -1,912,000 -1,502,000 -1,512,000 -1,637,000 -1,622,000 -1,707,000 -1,428,000 -1,701,000 -1,554,000 -1,563,000 -2,545,000 -4,268,000 -4,165,000 -3,584,000 -3,277,000 -2,816,000 -3,536,000 -1,807,000 -2,464,000 -2,421,000 -2,434,000 -2,059,000 -2,141,000 -2,315,000 -2,279,000 -2,310,000 -2,267,000 -3,585,000 -1,373,000 -982,000 -845,000 -2,055,000 -905,000 -626,000 -664,000 -2,912,000 -649,000 -891,000 -1,361,000 -2,895,000 -1,078,000 -574,000 -566,000 -1,760,000 -544,000 -575,000 -630,000 -749,000 -847,000 -928,000 -54,000 -9,000 -10,000 -45,000 -63,000 -74,000 -65,000 -66,000 -60,000 -35,000 -16,000 -17,000  -12,000 -24,000 -27,000 -32,000  
      interest income
    2,488,000 2,527,000 1,956,000 2,144,000 1,825,000 2,388,000  3,390,000 4,067,000 4,731,000 3,966,000 3,688,000 3,410,000                                                                  
      other income
    605,000 470,000 -286,000 3,912,000 -1,132,000 684,000  2,590,000 -3,650,000 4,508,000 403,000  49,000 2,619,000 1,136,000 -202,000 152,000 103,000 149,000 32,000 -978,000 314,000  340,000 531,000 649,000 -685,000 -31,000 160,000 200,000 1,042,000 1,620,000 476,000  -393,000 532,000 -409,000 -127,000 749,000 -1,547,000 688,000 978,000 1,464,000 -523,000 1,680,000 -7,124,000 -399,000 -6,307,000 -1,774,000 -1,046,000 -162,000 177,000 -282,000 588,000 656,000 -414,000                       
      income before provision for income taxes
    -77,679,000 -26,051,000 -29,328,000 -91,856,000 -37,665,000 -32,386,000  -37,656,000    -33,908,000 -20,508,000 -41,684,000 -28,483,000  -46,120,000 -24,152,000 -11,990,000  -45,960,000 -17,552,500 -15,321,000 -14,758,000 -40,131,000  -5,291,000 -19,461,000      -9,979,000 -17,002,000 -13,274,000 -13,604,000 -39,742,000 -10,947,000 -15,237,000 -11,674,000 -22,866,000 -6,544,000 -9,942,000 -4,114,000 -31,347,000 -7,048,000 -15,971,000  -34,922,700   -11,872,000 -35,812,682   -5,815,000 -7,095,000 -7,804,000 -19,973,000 -10,989,000 -10,935,500 -13,059,000 -15,965,000 -14,718,000 -14,760,000 -14,915,000 -19,080,000 -19,919,000 -17,468,250 -25,980,000 -24,977,000  -13,170,000 -15,440,000    
      benefit from income taxes
    50,000                                                                              
      net income
    -77,629,000 -26,051,000 -29,341,000 -91,896,000 -37,749,000 -32,386,000  -37,656,000 -44,399,000 -29,458,000 -23,601,000 -33,911,000 -21,086,000 -42,009,000 -28,977,000 -30,126,000 -46,120,000 -24,151,000 -11,997,000 -18,917,000 -45,960,000 -18,856,000 -15,331,000 -14,769,000 -40,151,000 -35,179,000 -5,311,000 -19,530,000 -17,548,000 -14,096,000 -15,881,000 -13,174,000 -4,183,000 -9,979,000 -17,001,000 -13,238,000 -13,685,000 -40,141,000 -11,067,000 -15,414,000 -11,779,000 -23,056,000 -6,628,000 -9,997,000 -4,154,000 -31,744,000 -7,139,000 -16,039,000 -10,815,000 -29,505,000 -5,814,000 -7,629,000 -11,879,000 -25,896,000 -10,010,000 -8,363,000 -6,014,000 -7,129,000 -7,830,000 -20,008,000 -11,007,000 -12,516,000 -13,114,000 -15,978,000 -14,718,000 -14,760,000 -14,915,000 -19,080,000 -19,919,000 -23,484,000 -25,980,000 -24,977,000  -15,994,000 -15,440,000 -19,236,000 -15,075,000  
      yoy
    105.65% -19.56%  144.04% -14.98% 9.94%  11.04% 110.56% -29.88% -18.55% 12.56% -54.28% 73.94% 141.54% 59.25% 0.35% 28.08% -21.75% 28.09% 14.47% -46.40% 188.67% -24.38% 128.81% 149.57% -66.56% 48.25% 319.51% 41.26% -6.59% -0.48% -69.43% -75.14% 53.62% -14.12% 16.18% 74.10% 66.97% 54.19% 183.56% -27.37% -7.16% -37.67% -61.59% 7.59% 22.79% 110.24% -8.96% 13.94% -41.92% -8.78% 97.52% 263.25% 27.84% -58.20% -45.36% -43.04% -40.29% 25.22% -25.21% -15.20% -12.08% -16.26% -26.11% -37.15% -42.59% -23.61%  46.83% 68.26% 29.85%       
      qoq
    197.99% -11.21% -68.07% 143.44% 16.56%   -15.19% 50.72% 24.82% -30.40% 60.82% -49.81% 44.97% -3.81% -34.68% 90.97% 101.31% -36.58% -58.84% 143.74% 22.99% 3.81% -63.22% 14.13% 562.38% -72.81% 11.29% 24.49% -11.24% 20.55% 214.94% -58.08% -41.30% 28.43% -3.27% -65.91% 262.71% -28.20% 30.86% -48.91% 247.86% -33.70% 140.66% -86.91% 344.66% -55.49% 48.30% -63.35% 407.48% -23.79% -35.78% -54.13% 158.70% 19.69% 39.06% -15.64% -8.95% -60.87% 81.78% -12.06% -4.56% -17.92% 8.56% -0.28% -1.04% -21.83% -4.21% -15.18% -9.61% 4.02%   3.59% -19.73% 27.60%   
      net income margin %
    -218.13% -85.33% -53.33% -196.60% -100.92% -170.48% NaN% -167.96% -266.01% -131.15% -92.52% -88.43% -56.88% -107.16% -67.23% -183.87% -145.05% -173.31% -44.73% -135.58% -308.93% -110.92% -81.86% -78.23% -246.87% -318.62% -23.38% -211.91% -98.68% -78.82% -131.14% -63.25% -10.83% -20.84% -164.13% -64.84% -80.49% -46.39% -50.96% -53.93% -35.18% -18.94% -16.03% -34.95% -9.97% -23.15% -16.53% -41.91% -24.34% -22.03% -10.83% -17.98% -32.67% -28.49% -33.71% -34.63% -19.19% -20.53% -25.13% -69.94% -39.20% -63.53% -69.49% -96.33% -100.70% -72.31% -64.80% -83.45% -91.70% -89.74% -93.10% -78.93% 0% -97.09% -114.00% -281.47% -253.62% 0% 
      net income attributable to noncontrolling interests
    278,000    300,000   -5,516,000 -24,606,000 -348,500 678,000 392,000                                                                   
      net loss attributable to fuelcell energy, inc.
    -77,907,000 -22,860,000 -29,868,000 -91,656,000 -38,049,000 -28,326,000  -32,140,000    -34,303,000 -18,622,000 -42,467,000 -29,414,000 -30,217,000 -40,624,000                 -9,979,000 -17,001,000 -13,238,000 -13,685,000 -39,947,000 -11,010,000 -15,373,000 -11,712,000 -22,820,000 -6,539,000 -9,894,000 -4,066,000 -31,147,000 -6,978,000 -15,843,000 -10,604,000 -28,746,000 -5,612,000 -7,365,000 -11,681,000 -25,573,000 -9,922,000 -8,292,000 -5,943,000 -7,065,000 -7,754,000 -19,956,000 -10,938,000 -12,123,000 -13,026,000 -15,882,000 -14,632,000              
      series b preferred stock dividends
    -800,000 -800,000 -800,000 -800,000 -800,000 -800,000  -800,000 -800,000 -800,000 -800,000 -800,000 -800,000 -800,000 -800,000 -800,000 -800,000 -800,000 -800,000 -800,000 -800,000 -800,000 -800,000 -800,000 -931,000 -821,000 -810,000 -800,000 -800,000 -800,000 -800,000 -800,000 -800,000                                              
      net loss attributable to common stockholders
    -78,707,000 -23,660,000 -30,668,000 -92,456,000 -38,849,000 -29,126,000  -32,940,000    -35,103,000 -19,422,000 -43,267,000 -30,214,000 -31,017,000 -41,424,000 -24,981,000 -12,797,000 -19,717,000 -46,760,000 -19,656,000 -16,131,000 -15,569,000 -41,082,000 -36,003,000 -8,328,000 -22,876,000 -33,038,000 -11,059,750 -17,620,000 -18,173,000 -8,446,000                                              
      loss per share basic and diluted:
                                                                                  
      net income per share
    -1.45 -0.49 -0.2 -3.78 -1.79 -1.42  -0.07 -0.05 -0.07 -0.06 -0.09 -0.05 -0.11 -0.08 -0.08 -0.11 -0.07 -0.04 -0.06 -0.15 -0.088 -0.07 -0.07 -0.2 -0.743 -0.18 -2.06 -0.33 -0.14 -0.2 -0.23 -0.12 -0.253 -0.31 -0.33 -0.39 -0.095 -0.38 -0.56 -0.48 -0.005 -0.02 -0.04 -0.02 -0.008 -0.03 -0.07 -0.06 -0.008 -0.03 -0.04 -0.07 -0.015 -0.06 -0.06 -0.05 -0.103 -0.07 -0.24 -0.1    -0.18 -0.2 -0.21 -0.29 -0.3 -0.265 -0.39 -0.38  -0.23 -0.24 -0.38 -0.34  
      basic and diluted weighted-average shares outstanding
    54,224,428 48,206,002 25,743,252 24,441,294 21,740,193 20,501,663 16,505,257 452,984,445 451,637,041 419,747,796 415,867,594 406,316,070 405,803,753 383,139,140 387,465,758 372,615,824 366,734,739 334,742,346 337,291,562 322,500,592 312,109,888  217,966,402 211,000,091 202,216,493  45,069,911 11,090,698 99,860,421  86,297,481 79,563,265 72,024,811  57,420,050 42,568,818 37,613,216  31,015,658 28,782,066 26,246,271  298,609,231 291,026,184 285,584,931  258,178,826 243,289,058 200,637,819  192,051,578 190,431,554 187,553,306  185,906,834 150,013,074 139,555,596  126,923,550 125,009,180 115,086,014    84,401,558 72,392,928 73,493,470 69,521,575 68,831,033 68,571 68,703,812 68,540,701 68,204,735 61,991 67,939,527 53,172,189 48,556,123 48,275,315 
      provision for income taxes
      -13,000 -40,000 -84,000       -3,000 -578,000 -325,000 -494,000   1,000 -7,000    -10,000 -11,000 -20,000  -20,000 -69,000         -81,000 -399,000 -120,000 -177,000 -105,000 -190,000 -84,000 -55,000 -40,000 -487,731  -68,000 -110,000 -370,978   -7,000 -68,931   -199,000 -34,000 -26,000 -35,000 -18,000 -17,000 -55,000 -13,000               
      net loss attributable to noncontrolling interests
     -3,191,000 527,000 -240,000  -4,060,000       -2,464,000                                                                  
      gross profit
            -11,725,000    5,237,000  -4,180,000   -1,818,500 1,100,000 -4,756,000 -3,618,000 -8,045,000 -3,128,000 167,000 3,281,000 -23,389,000 7,965,000  -2,205,000 1,143,000  -629,000 4,635,000 3,164,000 -2,626,000 383,000 1,813,000 -791,000 434,000 -157,000 -166,000 9,181,000 3,595,000 2,023,000 4,014,000 9,765,000 3,961,000 1,611,000 2,199,000 2,600,000 4,522,000 2,314,000 -2,311,000 3,183,000 -2,738,000 201,000 2,104,000                      
      yoy
            -323.89%      -480.00%   -77.40% -135.17% -2947.90% -210.27% -65.60% -139.27%  -248.80% -2146.28%   -147.57% -63.87%  -264.23% 155.65% -500.00% -705.07% -343.95% -1192.17% -108.62% -87.93% -107.76% -104.14% -5.98% -9.24% 25.57% 82.54% 275.58% -12.41% -30.38% -195.15% -18.32% -265.16% 1051.24% -209.84%                          
      qoq
                     -265.32% -123.13% 31.45% -55.03% 157.19% -1973.05% -94.91% -114.03% -393.65%   -292.91%   -113.57% 46.49% -220.49% -785.64% -78.87% -329.20% -282.26% -376.43% -5.42% -101.81% 155.38% 77.71% -49.60% -58.89% 146.53% 145.87% -26.74% -15.42% -42.50% 95.42% -200.13% -172.60% -216.25% -1462.19% -90.45%                       
      gross margin %
    0% 0% 0% 0% 0% 0% NaN% 0% -70.25% 0% 0% 0% 14.13% 0% -9.70% 0% 0% -13.05% 4.10% -34.09% -24.32% -47.33% -16.70% 0.88% 20.17% -211.84% 35.07% 0% -12.40% 6.39% 0% -3.02% 12.00% 6.61% -25.35% 1.88% 10.66% -0.91% 2.00% -0.55% -0.50% 7.54% 8.69% 7.07% 9.63% 7.12% 9.17% 4.21% 4.95% 1.94% 8.42% 5.45% -6.36% 3.50% -9.22% 0.83% 6.71% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 
      income before benefit from income taxes
            -44,399,000 -29,458,000 -23,601,000                                                                 -19,236,000 -15,075,000  
      net income attributable to fuelcell energy, inc.
            -19,793,000 -30,364,000 -24,279,000                                                                    
      net income attributable to common stockholders
            -20,593,000 -31,164,000 -25,079,000                                                                    
      gain on extinguishment of finance obligations and debt
             3,834,250 15,337,000                                                                    
      other expense
               -236,000           -501,000           -67,500                                             
      net income attributable to noncontrolling interest
                  437,000 91,000                                                               
      loss before benefit for income taxes
                   -30,126,000    -18,921,000      -35,159,000   -17,548,000 -14,091,000 -15,866,000 -13,174,000 -7,218,000                -10,705,000 -1,458,500 -5,834,000 -7,594,000  -2,504,750 -10,019,000 -8,484,000                       
      benefit for income taxes
                       4,000      -20,000    -5,000 -15,000  3,035,000  1,000 36,000          -22,750 -91,000   5,000 20,000 -35,000  2,250 9,000 121,000                       
      change in fair value of common stock warrant liability
                        -15,974,000 2,225,000 -1,694,000 -3,372,000 -34,245,000                                                      
      loss on extinguishment of debt
                        -11,156,000                                                          
      loss on extinguishment of preferred stock obligation of subsidiary
                        -934,000                                                          
      net loss attributable to redeemable noncontrolling interest
                    -5,496,000                                                              
      service and license
                     -126,000 14,344,000 660,000 4,913,000 4,924,250 7,113,000 6,972,000 5,612,000 6,466,500 11,496,000 2,598,000 11,772,000 3,214,750 5,549,000 3,206,000 4,104,000 6,084,250 4,809,000 12,592,000 6,936,000                                          
      gain on extinguishment of financing obligation
                          1,801,000                                                        
      series c preferred stock deemed contributions
                              884,000 1,599,000                                                   
      series d preferred stock deemed dividends
                              -3,091,000 -976,000                                                   
      series a warrant exchange
                               -3,169,000                                                   
      series c preferred stock deemed dividends and redemption value adjustment
                                -9,005,000                                                  
      series d preferred stock deemed dividends and redemption accretion
                             -3,000   -5,685,000                                                  
      series c preferred stock deemed dividends
                                 -958,000 -939,000 -4,199,000 -3,463,000                                              
      net loss attributable to noncontrolling interest
                 -1,242,000                        194,000 57,000 41,000 67,000 236,000 89,000 103,000 88,000 597,000 161,000 196,000 211,000 759,000 202,000 264,000 198,000 323,000 88,000 71,000 71,000 64,000 76,000 52,000 69,000 393,000 88,000 96,000 86,000              
      preferred stock dividends
                                     -800,000 -800,000 -800,000 -800,000 -2,400,000 -800,000 -800,000 -800,000 -2,400,000 -800,000 -800,000 -800,000 -2,400,000 -800,000 -800,000 -800,000 -2,400,000 -800,000 -800,000 -800,000 -2,401,000 -800,000 -801,000 -800,000 -800,000 -800,000 -800,000 -800,000 -800,000 -799,000 -800,000 -802,000 -802,000 -802,000 -802,000 -802,000 -802,000 -802,000 -802,000  -802,000 -802,000 -802,000 -1,595,000  
      net loss attributable to common shareholders
                                     -11,581,000 -17,801,000 -14,038,000 -14,485,000 -2,952,500 -11,810,000 -16,173,000 -12,512,000 -1,834,750 -7,339,000 -10,694,000 -4,866,000 -1,944,500 -7,778,000 -16,643,000 -11,404,000 -1,603,000 -6,412,000 -8,165,000 -12,481,000                          
      product sales
                                         48,882,000 13,681,000 15,424,000 25,073,000 97,465,000 31,130,000 20,221,000 33,418,000 104,527,000 32,315,000 27,707,000 34,460,000 99,630,000 45,441,000 34,375,000 29,065,000                          
      service agreements and license revenues
                                         28,278,000 4,480,000 10,573,000 6,320,000 13,995,000 7,017,000 4,618,000 3,871,000 18,878,000 7,078,000 7,177,000 4,960,000 24,435,000 3,706,000 4,108,000                           
      advanced technologies contract revenues
                                         9,376,000 3,555,000 2,584,000 2,089,000 10,261,000 3,209,000 3,761,000  13,712,000 3,783,000 3,390,000 5,014,000 9,886,000 4,560,000 3,953,000 2,324,000                          
      cost of product sales
                                         49,734,000 13,740,000 15,118,000 24,389,000 89,681,000 28,849,000 18,111,000 30,348,000 97,558,000 29,308,000 26,608,000 33,028,000 95,466,000 41,523,000 32,483,000 29,944,000                          
      cost of service agreements and license revenues
                                         28,972,000 4,284,000 10,988,000 6,851,000 12,582,000 5,719,000 4,433,000 3,568,000 16,408,000 6,629,000 6,760,000 4,157,000 26,256,000 3,427,000 3,904,000                           
      cost of advanced technologies contract revenues
                                         8,621,000 3,258,000 2,632,000 2,408,000 10,277,000 3,193,000 4,033,000 3,740,000 13,386,000 3,278,000 3,295,000 5,050,000 9,629,000 4,235,000 3,735,000 2,240,000                          
      advanced technologies contract revenues (including 0.4 million and 0.04 million of related party revenue
                                                4,381,000                                  
      revenues :
                                                                                  
      income from equity investment
                                                     11.5   46,000       143,000                   
      loss from equity investment
                                                         -10,500 -42,000  -362,000 -37,250 -94,000  -198,000 -144,000 -183,000 -245,000 -148,000              
      license fee and royalty income
                                                         1,177,000 422,000 412,000 424,000                      
      service and license revenues
                                                        4,969,000                          
      cost of service and license revenues
                                                        6,485,000                          
      product sales and revenues
                                                         6,892,250 27,569,000 22,111,000 29,600,000 33,289,000 29,382,000 26,673,000 25,760,000 17,193,000 16,218,000 13,007,000 12,808,000 16,727,000 18,738,000 19,308,000 19,031,000 14,857,000 23,220,000 26,440,000 9,768,000 5,391,750 7,807,000 4,899,000 3,000,000 4,877,000 
      research and development contracts
                                                         5,346,000 2,124,000 2,042,000 1,737,000 1,434,000 1,778,000 1,934,000 2,320,000 2,508,000 2,655,000 3,580,000 1,808,000 3,685,000 4,279,000 3,556,000 2,692,000 2,849,000 4,684,000 5,203,000 5,251,000 5,523,000 5,737,000 1,935,000 2,944,000 3,865,000 
      cost of product sales and revenues
                                                         7,580,250 30,321,000 22,081,000 27,660,000 32,698,000 29,133,000 37,460,000 28,059,000 20,877,000 20,050,000 19,120,000 18,013,000 23,213,000 26,269,000 28,614,000 28,937,000 35,831,000 39,010,000 39,787,000 19,410,000 17,148,000 14,903,000 13,382,000 9,350,000 13,827,000 
      cost of research and development contracts
                                                         5,127,000 2,110,000 1,871,000 1,573,000 1,586,000 1,890,000 2,017,000 2,337,000 2,428,000 2,579,000 3,267,000 2,096,000 2,941,000 2,978,000 2,837,000 2,238,000 2,415,000 4,373,000 4,831,000 4,440,000 4,680,000 4,718,000 1,944,000 2,923,000 3,665,000 
      net loss to common shareholders
                                         -54,116,505    -32,536,101    -41,289,175    -37,530,942    -27,974,000 -10,722,000 -9,093,000 -6,743,000 -7,865,000 -8,554,000 -29,743,000 -11,738,000 -12,923,000 -13,825,000 -16,682,000 -15,434,000 -15,562,000 -15,717,000 -19,882,000 -20,721,000 -24,286,000 -26,782,000 -25,779,000  -16,796,000 -16,242,000    
      gain from equity investment
                                                           -150,000                       
      adjustment for modification of redeemable preferred stock of subsidiary
                                                               -8,987,000                   
      interest and other income
                                                            196,000 1,331,000 496,000 634,000 400,000 375,000 296,000 364,000 319,000 130,000 185,000 130,000 415,000 419,000 900,000 824,000 1,125,000 1,783,000 3,152,000 1,129,000 1,538,000 1,976,000 
      loss before redeemable preferred stock of subsidiary
                                                         -35,812,682   -5,815,000 -7,095,000 -7,804,000 -19,973,000 -10,464,000 -10,494,750 -12,456,000 -15,362,000 -14,161,000              
      accretion of redeemable preferred stock of subsidiary
                                                                -525,000 -440,750 -603,000 -603,000 -557,000              
      costs and expenses:
                                                                                  
      net income per share
    -1.45 -0.49 -0.2 -3.78 -1.79 -1.42  -0.07 -0.05 -0.07 -0.06 -0.09 -0.05 -0.11 -0.08 -0.08 -0.11 -0.07 -0.04 -0.06 -0.15 -0.088 -0.07 -0.07 -0.2 -0.743 -0.18 -2.06 -0.33 -0.14 -0.2 -0.23 -0.12 -0.253 -0.31 -0.33 -0.39 -0.095 -0.38 -0.56 -0.48 -0.005 -0.02 -0.04 -0.02 -0.008 -0.03 -0.07 -0.06 -0.008 -0.03 -0.04 -0.07 -0.015 -0.06 -0.06 -0.05 -0.103 -0.07 -0.24 -0.1    -0.18 -0.2 -0.21 -0.29 -0.3 -0.265 -0.39 -0.38  -0.23 -0.24 -0.38 -0.34  
      basic
                                                                 -0.13 -0.15 -0.2               
      diluted
                                                                 -0.13 -0.15 -0.2               
      weighted-average shares outstanding
                                                                                  
      basic
                         221,960,288    55,081,266    82,754,268    49,914,904    29,773,700    24,513,731    245,686,983    186,525,001    165,471,261    124,498,073    93,925,863,000 93,512,868 84,515,979               
      diluted
                         221,960,288    55,081,266    82,754,268    49,914,904    29,773,700    24,513,731    245,686,983    186,525,001    165,471,261    124,498,073    93,925,863,000 93,512,868 84,515,979               
      loss from equity investments
                                                                     -235,000 -15,000 -216,000 -346,000 -572,000 -245,000 -607,000  -231,000 -414,000    
      loss before redeemable minority interest
                                                                     -14,227,000 -14,382,000 -18,547,000 -19,426,000 -17,122,250 -25,507,000 -24,504,000  -12,861,750 -15,019,000    
      redeemable minority interest
                                                                     -533,000 -533,000 -533,000 -493,000 -473,000 -473,000 -473,000  -420,000 -421,000 -391,000   
      license fee income
                                                                               34,000 71,000 69,000 
      license fee expense
                                                                                  
      income from equity investments
                                                                               -217,000 -215,000  
      income before redeemable minority interest
                                                                               -18,845,000   
      net income to common shareholders
                                                                               -20,038,000 -16,670,000  
      income from continuing operations
                                                                                -15,075,000  
      discontinued operations, net of tax
                                                                                  
      continuing operations
                                                                                -0.34  
      discontinued operations
                                                                                  
      net income from continuing operations before benefit from income tax
                                                                                  
      net income from continuing operations
                                                                                  
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2026-04-30 2026-01-31 2025-10-31 2025-07-31 2025-04-30 2025-01-31 2024-10-31 2024-04-30 2024-01-31 2023-10-31 2023-07-31 2023-04-30 2023-01-31 2022-10-31 2022-07-31 2022-04-30 2022-01-31 2021-10-31 2021-07-31 2021-04-30 2021-01-31 2020-10-31 2020-07-31 2020-04-30 2020-01-31 2019-10-31 2019-07-31 2019-04-30 2019-01-31 2018-10-31 2018-07-31 2018-04-30 2018-01-31 2017-10-31 2017-07-31 2017-04-30 2017-01-31 2016-10-31 2016-07-31 2016-04-30 2016-01-31 2015-10-31 2015-07-31 2015-04-30 2015-01-31 2014-10-31 2014-07-31 2014-04-30 2014-01-31 2013-01-31 2012-10-31 2012-07-31 2012-04-30 2012-01-31 2011-01-31 2010-10-31 2010-07-31 2010-04-30 2010-01-31 2009-10-31 2009-07-31 2009-04-30 2009-01-31 2008-10-31 2008-07-31 2008-04-30 2008-01-31 2007-10-31 2007-07-31 2007-01-31 2006-01-31 2005-07-31 
                                                                              
        assets
                                                                              
        current assets:
                                                                              
        cash and cash equivalents, unrestricted
      373,167,000 311,778,000 278,099,000 174,662,000 116,061,000 98,070,000 148,133,000 158,790,000 297,466,000 249,952,000 303,679,000 246,844,000 315,168,000 458,055,000 456,479,000 467,774,000 376,963,000 432,213,000 468,565,000 139,086,000 178,570,000 149,867,000 66,284,000 29,087,000 38,254,000 9,434,000 16,018,000 14,889,000 27,750,000  48,663,000 66,973,000 76,776,000  35,683,000 46,454,000 57,646,000  94,150,000 81,982,000 76,944,000  65,520,000 82,985,000 84,664,000  107,938,000 64,254,000                         
        restricted cash and cash equivalents - short-term
      16,577,000 17,675,000 16,601,000 16,092,000 12,339,000 12,627,000 12,161,000 4,969,000 5,957,000 5,159,000 6,078,000 4,778,000 4,456,000 4,423,000 5,627,000 5,301,000 12,643,000 11,268,000 10,212,000 17,427,000 12,252,000 9,233,000 6,087,000 8,082,000 8,178,000 3,473,000 1,381,000 1,743,000 5,601,000 5,806,000 5,303,000 5,249,000 5,230,000 4,628,000 4,605,000 4,591,000 9,439,000 9,437,000 9,436,000 9,029,000 6,370,000 6,288,000 6,968,000 6,968,000 5,625,000 5,523,000 4,908,000 4,889,000 6,194,000                        
        accounts receivable
      7,684,000 6,225,000 3,999,000 9,950,000 10,033,000 9,242,000 11,751,000 7,155,000 3,346,000 3,809,000 10,102,000 6,447,000 3,213,000 4,885,000 12,101,000 15,466,000 30,702,000 14,730,000 14,182,000 12,147,000 10,021,000 9,563,000 7,364,000 6,117,000 5,593,000 3,292,000 3,705,000 11,842,000 8,321,000 23,039,000 39,430,000 46,189,000 44,081,000 68,521,000 26,316,000 24,836,000 25,619,000 24,593,000 29,290,000 43,689,000 45,396,000 60,790,000 55,315,000 43,521,000 60,628,000 64,375,000 39,555,000 34,735,000 33,831,000 20,101,000 25,984,000 20,240,000 17,036,000 23,892,000 23,288,000 18,066,000 13,897,000 18,110,000 24,013,000 22,920,000 18,427,000 14,359,000 30,376,000 16,096,000 19,780,000 12,861,000 10,402,000 10,063,000 10,161,000 7,957,000 10,577,000 12,799,000 
        unbilled receivables
      43,653,000 53,353,000 49,008,000 44,718,000 45,404,000 41,881,000 36,851,000 26,409,000 22,451,000 16,296,000 18,986,000 16,300,000 13,711,000 11,019,000 10,461,000 10,205,000 13,558,000 8,924,000 8,690,000 7,660,000 8,243,000 8,041,000 7,917,000 7,475,000 7,523,000 7,684,000 8,186,000 11,078,000 12,387,000                                            
        inventories
      88,449,000 90,275,000 86,196,000 104,598,000 123,541,000 125,755,000 113,703,000 113,918,000 102,859,000 84,456,000 85,561,000 87,294,000 101,176,000 90,909,000 80,606,000 82,878,000 65,386,000 67,074,000 60,413,000 58,920,000 61,901,000 50,971,000 51,502,000 54,945,000 58,433,000 54,515,000 59,830,000 57,043,000 54,802,000 53,575,000 60,114,000 55,255,000 59,868,000 74,496,000 71,984,000 75,585,000 82,268,000 73,806,000 78,204,000 66,222,000 60,276,000 65,754,000 75,571,000 71,877,000 56,620,000 55,895,000 55,761,000 55,713,000 51,852,000 47,048,000 47,701,000 48,995,000 52,686,000 46,304,000 32,352,000 33,404,000 30,574,000 30,284,000 31,422,000 25,433,000 25,033,000 22,833,000 26,074,000 24,523,000 27,116,000 30,953,000 35,411,000 29,581,000 23,911,000 20,904,000 14,130,000 13,267,000 
        other current assets
      14,400,000 15,457,000 15,907,000 20,377,000 16,178,000 13,365,000 12,736,000 13,262,000 13,152,000 12,881,000 12,832,000 14,452,000 11,545,000 10,989,000 14,259,000 13,602,000 9,764,000 9,177,000 12,170,000 10,317,000 7,422,000 6,306,000 7,640,000 5,672,000 6,805,000 5,921,000 7,254,000 7,668,000 8,273,000 8,592,000 9,041,000 7,938,000 7,567,000 6,571,000 6,011,000 6,588,000 5,509,000 10,446,000 7,252,000 8,466,000 7,241,000 6,954,000 10,133,000 10,536,000 9,880,000 7,528,000 8,565,000 8,491,000 6,871,000 6,945,000 4,727,000 6,084,000 5,646,000 6,467,000 6,343,000 5,253,000 4,700,000 4,620,000 3,954,000 6,499,000 7,986,000 8,572,000 8,754,000 8,952,000 8,895,000 8,588,000 7,513,000 7,730,000 7,664,000 4,420,000 6,345,000 5,467,000 
        total current assets
      543,930,000 494,763,000 449,810,000 370,397,000 384,464,000 411,238,000 444,458,000 425,843,000 445,231,000 476,313,000 514,669,000 452,515,000 524,921,000 580,280,000 579,533,000 595,226,000 509,016,000 543,386,000 574,232,000 245,557,000 278,409,000 233,981,000 146,794,000 111,378,000 124,786,000 84,319,000 96,374,000 104,263,000 117,134,000 130,303,000 162,551,000 181,604,000 193,522,000 203,510,000 144,599,000 158,054,000 180,481,000 202,469,000 233,964,000 222,768,000 205,166,000 203,898,000 225,146,000 225,832,000 223,129,000 217,031,000 216,727,000 168,082,000 177,216,000 160,365,000 145,926,000 149,085,000 165,630,000 118,195,000 127,605,000 102,209,000 101,896,000 80,138,000 109,947,000 119,679,000 104,456,000 88,137,000 108,772,000 118,020,000 133,457,000 165,899,000 189,826,000 201,005,000 209,278,000 126,641,000 153,148,000 210,683,000 
        restricted cash and cash equivalents - long-term
      51,108,000 50,147,000 47,092,000 46,100,000 50,716,000 49,725,000 48,589,000 48,134,000 45,376,000 44,465,000 26,665,000 25,452,000 20,155,000 18,566,000 17,532,000 16,477,000 15,825,000 16,731,000 15,243,000 14,669,000 18,772,000 32,952,000 34,909,000 36,250,000 27,481,000 26,871,000 28,400,000 36,350,000 34,863,000 35,142,000 33,289,000 32,965,000 33,425,000 33,526,000 33,480,000 33,088,000 34,211,000 24,692,000 25,225,000 25,655,000 30,905,000 20,600,000 20,600,000 20,300,000 21,642,000 19,600,000 20,215,000 20,234,000 19,950,000                        
        inventories - long-term
       2,082,000 3,216,000 2,743,000 2,743,000 2,743,000 2,743,000 2,743,000 2,743,000 7,329,000 7,549,000 7,549,000 7,549,000 7,549,000 4,586,000 4,586,000 4,586,000 4,586,000 4,586,000 4,586,000 4,586,000 8,986,000 9,018,000 9,018,000 6,797,000 2,179,000 2,179,000                                              
        project assets
      167,512,000 211,026,000 216,847,000 224,482,000 228,202,000 236,693,000 242,131,000 256,607,000 260,790,000 258,066,000 248,223,000 237,151,000 229,914,000 232,886,000 246,018,000 239,864,000 235,602,000 223,277,000 199,218,000 187,242,000 164,593,000 161,809,000 160,921,000 153,874,000 147,924,000 144,115,000 156,393,000 123,136,000 109,819,000 99,600,000 89,694,000 79,595,000 75,754,000  67,201,000 56,288,000   15,632,000 13,380,000 8,939,000  11,639,000 9,945,000 5,712,000                            
        property, plant and equipment
      95,323,000 95,747,000 96,436,000 97,761,000 138,188,000 135,251,000 130,686,000 111,576,000 97,941,000 89,668,000 79,533,000 71,130,000 63,338,000 58,137,000 52,868,000 44,767,000 41,124,000 39,416,000 35,961,000 35,417,000 35,304,000 36,331,000 37,301,000 38,530,000 39,794,000 41,134,000 42,406,000 43,560,000 47,405,000 48,204,000 46,176,000 44,667,000 44,093,000 43,565,000 41,876,000 40,895,000 39,315,000 36,640,000 30,485,000 29,135,000 29,109,000 29,002,000 27,015,000 27,313,000 26,589,000 26,609,000 25,429,000 24,170,000 23,947,000 21,553,000 23,258,000 22,450,000 22,788,000 23,429,000 25,391,000 26,679,000 28,832,000 30,314,000 31,138,000 32,394,000 33,900,000 35,891,000 37,302,000 38,259,000 38,761,000 38,169,000 38,761,000 39,612,000 40,860,000 43,371,000 48,059,000 45,224,000 
        operating lease right-of-use assets
      11,048,000 11,067,000 11,232,000 10,935,000 7,566,000 7,980,000 8,122,000 8,036,000 8,197,000 8,352,000 8,690,000 8,917,000 8,997,000 7,189,000 7,401,000 7,658,000 7,877,000 8,109,000 7,993,000 8,201,000 8,524,000 10,098,000 10,316,000 10,051,000 10,276,000                                                
        intangible assets
      3,242,000 3,566,000 3,891,000 4,215,000 14,131,000 14,455,000 14,779,000 15,428,000 15,752,000 16,076,000 16,400,000 16,725,000 17,049,000 17,373,000 17,697,000 18,021,000 18,346,000 18,670,000 18,994,000 19,318,000 19,643,000 19,967,000 20,291,000 20,615,000 20,939,000 21,264,000 21,588,000   9,592,000    9,592,000  9,592,000 9,592,000 9,592,000 9,592,000 9,592,000 9,592,000 9,592,000 9,592,000 9,592,000 9,592,000 9,592,000 9,592,000 9,592,000 9,592,000 9,592,000                       
        other assets
      131,217,000 110,080,000 103,622,000 73,902,000 53,758,000 45,375,000 48,541,000 44,387,000 43,075,000 51,176,000 39,449,000 35,127,000 16,385,000 13,662,000 14,712,000 15,542,000 18,240,000 16,998,000 19,330,000 16,526,000 18,488,000 15,339,000 13,144,000 10,850,000 9,327,000 9,489,000 10,019,000 20,251,000 23,067,000 13,505,000 12,819,000 15,121,000 14,413,000 16,517,000 16,445,000 17,551,000 10,020,000 17,558,000 7,917,000 2,016,000 2,716,000 3,142,000 3,457,000 3,547,000 3,634,000 3,729,000 3,877,000 2,804,000 5,944,000 13,881,000 16,186,000 15,672,000 17,146,000 18,219,000 3,494,000 2,733,000 1,311,000 600,000 587,000 551,000 517,000 439,000 399,000 358,000 485,000 446,000 404,000 355,000 287,000 250,000 572,000 571,000 
        total assets
      1,003,380,000 978,478,000 932,146,000 830,535,000 883,843,000 907,535,000 944,124,000 916,829,000 923,180,000 955,520,000 945,253,000 858,641,000 892,383,000 939,717,000 944,422,000 946,216,000 854,691,000 875,248,000 879,632,000 535,591,000 552,394,000 523,538,000 436,769,000 394,641,000 391,399,000 333,446,000 361,434,000 341,227,000 345,955,000 340,421,000 358,196,000 367,619,000 374,874,000 383,786,000 317,268,000 319,543,000 328,224,000 342,137,000 329,628,000 309,912,000 294,622,000 277,231,000 289,885,000 290,659,000 288,661,000 280,636,000 279,915,000 228,957,000 240,724,000 209,636,000 191,485,000 197,033,000 215,468,000 169,918,000 170,672,000 150,529,000 157,231,000 137,942,000 158,626,000 162,688,000 149,172,000 134,958,000 164,358,000 185,476,000 210,367,000 223,942,000 242,862,000 253,188,000 262,863,000 186,499,000 254,756,000 281,630,000 
        liabilities and stockholders' equity
                                                                              
        current liabilities:
                                                                              
        current portion of long-term debt
      17,351,000 17,795,000 15,847,000 16,710,000 17,137,000 16,886,000 15,924,000 11,733,000 10,198,000 10,067,000 9,763,000 13,289,000 13,249,000 13,198,000 9,810,000 9,919,000 9,722,000 10,085,000 9,154,000 8,575,000 14,594,000 21,366,000 17,692,000 13,834,000 8,660,000 21,916,000 43,416,000 54,815,000 38,869,000 17,596,000 14,494,000 10,094,000 23,513,000 28,281,000 21,738,000 14,564,000 9,428,000 5,275,000 13,995,000 11,619,000 1,957,000 7,358,000 6,908,000 4,497,000 1,484,000 1,439,000 1,404,000 1,346,000 6,914,000 5,221,000 5,161,000 5,126,000 5,092,000 5,085,000                   
        current portion of operating lease liabilities
      1,003,000 975,000 932,000 798,000 795,000 798,000 807,000 752,000 694,000 599,000 668,000 645,000 557,000 650,000 798,000 946,000 1,013,000 1,032,000 950,000 875,000 955,000 939,000 888,000 770,000 1,149,000                                                
        accounts payable
      16,464,000 14,547,000 17,009,000 16,399,000 22,552,000 18,445,000 22,585,000 21,614,000 17,055,000 26,518,000 22,404,000 21,075,000 24,590,000 28,196,000 26,978,000 19,524,000 22,300,000 19,267,000 10,893,000 15,884,000 8,034,000 9,576,000 10,407,000 13,567,000 14,117,000 16,943,000 30,250,000 27,810,000 19,905,000 22,594,000 44,133,000 42,813,000 37,829,000 42,616,000 8,757,000 10,215,000 9,508,000 18,475,000 16,002,000 14,622,000 14,604,000 15,745,000 19,207,000 20,236,000 22,501,000 22,969,000 15,917,000 14,613,000 18,397,000 7,413,000 12,254,000 10,871,000 12,207,000 17,841,000 10,065,000 10,267,000 8,574,000 6,271,000 7,689,000 8,484,000 8,700,000 7,849,000 15,361,000 16,287,000 16,389,000 14,021,000 9,746,000 12,397,000 8,022,000 8,182,000 8,519,000 7,181,000 
        accrued liabilities
      24,123,000 24,868,000 31,318,000 29,866,000 24,952,000 23,553,000 30,362,000 24,143,000 22,323,000 26,313,000 23,046,000 22,873,000 20,313,000 27,415,000 22,535,000 24,011,000 25,988,000 16,099,000 13,531,000 13,419,000 10,763,000 15,681,000 14,622,000 10,905,000 8,958,000 11,452,000 8,582,000 10,954,000 11,051,000 7,632,000 14,454,000 14,731,000 21,513,000 18,381,000 13,122,000 15,003,000 18,388,000 20,900,000 19,720,000 25,836,000 28,987,000 19,175,000 17,278,000 11,761,000 11,779,000 12,066,000 11,618,000 12,070,000 10,599,000 20,843,000 20,265,000 20,454,000 23,743,000 23,003,000 15,819,000 16,721,000 15,639,000 15,027,000 15,441,000 13,808,000 12,727,000 10,210,000 10,452,000 11,023,000 8,948,000 8,257,000 9,471,000 8,511,000 7,790,000 9,013,000 5,979,000 6,106,000 
        deferred revenue
      4,359,000 3,950,000 2,733,000 5,254,000 2,918,000 5,192,000 4,226,000 6,756,000 3,616,000 2,406,000 3,114,000 4,782,000 7,366,000 16,341,000 20,393,000 25,902,000 16,237,000 6,287,000 8,454,000 17,464,000 18,728,000 10,399,000 10,100,000 12,629,000 15,341,000 11,471,000 15,650,000 16,331,000 17,213,000 11,347,000 9,703,000 9,424,000 10,429,000 7,964,000 8,971,000 8,388,000 8,101,000 6,811,000 17,999,000 23,506,000 28,530,000 31,787,000 39,462,000 45,668,000 42,859,000 37,626,000 44,803,000 51,878,000 47,630,000 66,589,000 45,939,000 50,380,000 54,442,000 58,180,000 37,902,000                10,328,000 8,227,000 
        total current liabilities
      63,300,000 62,135,000 67,839,000 69,027,000 68,354,000 64,874,000 73,904,000 64,998,000 53,886,000 65,903,000 58,995,000 62,664,000 66,075,000 85,800,000 80,514,000 80,302,000 75,260,000 52,770,000 42,982,000 56,217,000 53,074,000 58,899,000 54,641,000 52,604,000 49,170,000 62,732,000 98,848,000 110,840,000 87,989,000 60,121,000 83,609,000 77,899,000 94,149,000 98,078,000 53,450,000 48,957,000 46,247,000 52,263,000 68,540,000 76,439,000 74,847,000 74,888,000 83,683,000 83,056,000 79,472,000 75,061,000 74,731,000 80,884,000 84,502,000 101,139,000 84,897,000 88,226,000 97,074,000 105,505,000 66,191,000 54,038,000 48,329,000 47,918,000 52,715,000 41,886,000 48,740,000 43,208,000 55,259,000 58,414,000 61,583,000 52,802,000 49,177,000 42,318,000 37,812,000 24,542,000 25,548,000 22,192,000 
        long-term deferred revenue
      10,362,000 8,553,000 5,985,000 5,401,000 4,203,000 3,077,000 3,010,000 987,000          30,427,000 28,969,000 26,698,000 25,579,000 31,501,000 31,026,000 29,907,000 29,797,000 28,705,000 22,190,000 22,470,000 22,769,000 16,793,000 17,317,000 17,841,000 18,364,000 18,915,000 19,430,000 19,944,000 20,459,000 20,974,000 21,101,000 21,616,000 22,582,000 22,646,000 23,160,000 21,676,000 22,190,000 20,705,000 21,524,000 19,733,000 20,248,000 22,317,000 15,533,000 6,250,000 6,500,000 6,750,000 7,750,000      1,464,000 1,804,000 2,220,000 2,672,000 3,084,000 3,495,000 3,948,000 4,401,000 4,844,000 7,562,000   
        long-term operating lease liabilities
      11,799,000 11,857,000 11,954,000 11,710,000 8,352,000 8,691,000 8,894,000 8,857,000 8,912,000 8,992,000 9,277,000 9,392,000 9,503,000 7,575,000 7,619,000 7,709,000 7,821,000 8,093,000 8,011,000 8,190,000 8,327,000 9,817,000 9,988,000 9,716,000 9,466,000                                                
        long-term debt and other liabilities
      129,550,000 131,933,000 115,227,000 119,320,000 124,138,000 125,797,000 130,850,000 130,030,000 117,670,000 119,588,000 109,130,000 80,503,000 81,575,000 82,863,000 82,280,000 79,524,000 81,290,000 78,633,000 73,582,000 75,580,000 78,051,000 150,651,000 167,367,000 176,821,000 161,804,000 90,140,000 79,696,000 59,575,000 66,883,000 71,619,000 77,279,000 82,804,000 60,297,000 63,759,000 70,338,000 77,394,000 82,772,000 81,998,000 42,603,000 44,807,000 29,640,000 12,998,000 13,150,000 13,177,000 13,273,000 13,367,000 13,449,000 14,501,000 37,173,000 7,380,000 3,975,000 4,028,000 4,033,000 4,075,000 4,112,000 4,056,000 4,132,000 4,245,000 4,314,000 4,410,000 4,526,000 4,479,000 4,434,000 4,075,000 3,116,000 1,105,000 579,000 613,000 611,000 560,000 779,000 971,000 
        total liabilities
      215,011,000 214,478,000 201,005,000 205,458,000 205,047,000 202,439,000 216,658,000 204,872,000 181,154,000 195,215,000 177,402,000 152,559,000 157,153,000 185,333,000 184,755,000 185,812,000 182,648,000 169,923,000 153,544,000 166,685,000 165,031,000 269,133,000 280,587,000 285,468,000 266,958,000 197,852,000 216,667,000 207,827,000 192,923,000 163,498,000 193,114,000 193,369,000 187,822,000 194,973,000 157,598,000 159,184,000 162,685,000 167,884,000 145,007,000 155,889,000 138,563,000 122,620,000 131,951,000 130,606,000 126,792,000 122,330,000 123,077,000 128,129,000 154,533,000 144,104,000 117,500,000 111,397,000 120,640,000 128,889,000 78,053,000 66,136,000 60,897,000 61,106,000 66,562,000 56,420,000 54,730,000 49,491,000 61,913,000 65,161,000 67,783,000 57,402,000 53,704,000 47,332,000 43,267,000 32,664,000 26,327,000 23,163,000 
        redeemable series b preferred stock
      59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000                                        
        total equity:
                                                                              
        stockholders’ equity:
                                                                              
        common stock (0.0001 par value); 1,000,000,000 shares authorized as of april 30, 2026 and october 31, 2025; 63,549,362 and 46,075,237 shares issued and outstanding as of april 30, 2026 and october 31, 2025, respectively
      6,000                                                                        
        additional paid-in capital
      2,651,450,000 2,548,939,000 2,493,318,000 2,357,630,000 2,318,607,000 2,306,879,000 2,300,031,000 2,208,951,000 2,200,862,000 2,199,661,000 2,186,405,000 2,100,724,000 2,095,667,000 2,094,076,000 2,056,626,000 2,028,206,000 1,908,981,000 1,908,471,000 1,908,011,000 1,538,831,000 1,538,311,000 1,359,454,000 1,242,518,000 1,180,042,000 1,180,499,000 1,151,454,000 1,125,212,000 1,084,969,000 1,074,308,000 1,073,454,000 1,072,726,000 1,063,501,000 1,055,154,000 1,045,197,000 1,033,744,000 1,017,632,000 1,009,607,000 1,004,566,000 1,002,784,000 960,891,000 947,933,000 934,488,000 928,933,000 924,360,000 917,436,000 909,431,000 902,747,000 839,557,000 809,013,000 754,605,000 751,256,000 751,519,000 751,577,000 689,420,000 682,656,000 663,951,000 663,979,000 631,793,000 631,338,000 631,296,000 605,246,000 581,726,000 579,893,000 578,337,000 577,594,000 575,846,000 573,725,000 571,944,000 570,110,000 471,315,000 521,989,000 520,430,000 
        accumulated deficit
      -1,930,216,000 -1,852,309,000 -1,829,449,000 -1,799,581,000 -1,707,925,000 -1,669,876,000 -1,641,550,000 -1,567,474,000 -1,535,334,000 -1,515,541,000 -1,485,177,000 -1,460,898,000 -1,426,595,000 -1,407,973,000 -1,365,506,000 -1,336,092,000 -1,305,875,000 -1,265,251,000 -1,241,070,000 -1,229,073,000 -1,210,156,000 -1,164,196,000 -1,145,340,000 -1,130,009,000 -1,115,240,000 -1,075,089,000 -1,039,910,000 -1,034,599,000 -1,015,069,000 -990,867,000 -976,771,000 -960,890,000 -947,716,000 -943,533,000 -933,554,000 -916,553,000 -903,315,000 -889,630,000 -876,768,000 -865,758,000 -850,385,000 -838,673,000 -829,813,000 -823,274,000 -813,380,000 -809,314,000 -804,614,000 -797,636,000 -781,793,000 -748,512,000 -736,831,000 -725,493,000 -715,571,000 -707,279,000 -666,561,000 -655,623,000 -643,500,000 -630,474,000 -614,592,000 -599,960,000 -585,200,000 -570,285,000 -551,205,000 -531,286,000 -507,802,000 -481,822,000 -456,846,000 -437,929,000 -421,935,000 -388,491,000   
        accumulated other comprehensive loss
      -1,810,000 -1,769,000 -1,695,000 -1,881,000 -1,507,000 -1,793,000 -1,561,000 -1,717,000 -1,639,000 -1,672,000 -1,620,000 -1,456,000 -1,305,000 -1,752,000 -1,145,000 -1,059,000 -910,000 -819,000 -747,000 -741,000 -681,000 -739,000 -877,000 -738,000 -696,000 -647,000 -431,000 -536,000 -396,000 -403,000 -456,000 -328,000 -382,000 -415,000 -383,000 -582,000 -614,000 -544,000 -535,000 -307,000 -727,000 -509,000 -563,000 -499,000 -447,000               -2,000             
        treasury stock
      -1,502,000 -1,453,000 -1,406,000 -1,360,000 -1,314,000 -1,268,000 -1,198,000 -1,164,000 -1,129,000 -1,078,000 -1,026,000 -923,000 -923,000 -855,000 -786,000 -718,000 -650,000 -586,000 -544,000 -503,000 -462,000 -432,000 -403,000 -437,000 -437,000 -466,000 -466,000 -466,000 -363,000 -363,000 -447,000 -447,000 -280,000 -280,000 -280,000 -280,000 -179,000 -179,000 -179,000 -179,000 -78,000 -78,000 -56,000 -56,000 -56,000 -95,000 -95,000 -95,000 -53,000 -53,000 -53,000 -53,000 -53,000 -53,000 -53,000 -53,000 -53,000 -53,000 -53,000 -53,000 -53,000 -53,000 -90,000 -90,000 -90,000 -90,000 -126,000 -126,000 -126,000 -158,000   
        deferred compensation
      1,502,000 1,453,000 1,406,000 1,360,000 1,314,000 1,268,000 1,198,000 1,164,000 1,129,000 1,078,000 1,026,000 923,000 923,000 855,000 786,000 718,000 650,000 586,000 544,000 503,000 462,000 432,000 403,000 437,000 437,000 466,000 466,000 466,000 363,000 363,000 447,000 447,000 280,000 280,000 280,000 280,000 179,000 179,000 179,000 179,000 78,000 78,000 56,000 56,000 56,000 95,000 95,000 95,000 53,000 53,000 53,000 53,000 53,000 53,000 53,000 53,000 53,000 53,000 53,000 53,000 53,000 53,000 90,000 90,000 90,000 90,000 126,000 126,000 126,000 158,000 88,000  
        total stockholders’ equity
      719,430,000 694,866,000 662,179,000 556,171,000 609,177,000 635,212,000 656,922,000 639,806,000           666,231,000 309,049,000 327,506,000 194,548,000 96,325,000 49,316,000 64,584,000 75,737,000 84,883,000 49,835,000 58,854,000 82,194,000 95,508,000 102,291,000 107,064,000 101,256,000                      8,350,000                 
        noncontrolling interests
      9,082,000 9,277,000 9,105,000 9,049,000 9,762,000 10,027,000 10,687,000 12,294,000 18,235,000  8,342,000 7,814,000 7,565,000    -5,496,000                                                        
        total equity
      728,512,000 704,143,000 671,284,000 565,220,000 618,939,000 645,239,000 667,609,000 652,100,000 682,169,000 700,448,000 707,994,000 646,225,000 675,373,000 691,497,000 696,780,000 697,517,000 596,737,000 642,438,000                    114,396,000 124,764,000 94,166,000 96,202,000 94,754,000 98,077,000 100,196,000 102,012,000 98,449,000 96,981,000 40,971,000 26,334,000 5,675,000 14,128,000 25,779,000 34,971,000  15,388,000 7,687,000 20,231,000 1,156,000 16,674,000              
        total liabilities, redeemable series b preferred stock and total equity
      1,003,380,000 978,478,000 932,146,000 830,535,000 883,843,000 907,535,000 944,124,000 916,829,000 923,180,000                                                                
        common stock (0.0001 par value); 1,000,000,000 shares authorized as of january 31, 2026 and october 31, 2025; 52,609,242 and 46,075,237 shares issued and outstanding as of january 31, 2026 and october 31, 2025, respectively
       5,000                                                                       
        investments - short-term
          60,908,000 110,298,000 109,123,000 101,340,000  103,760,000 77,431,000 76,400,000 75,652,000                                                            
        goodwill
          4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,075,000 4,245,000                       
        common stock (0.0001 par value); 1,000,000,000 shares authorized as of october 31, 2025 and october 31, 2024; 46,075,237 and 20,375,932 shares issued and outstanding as of october 31, 2025 and october 31, 2024, respectively
        5,000                                                                      
        common stock (0.0001 par value); 1,000,000,000 shares authorized as of july 31, 2025 and october 31, 2024; 29,645,294 and 20,375,932 shares issued and outstanding as of july 31, 2025 and october 31, 2024, respectively
         3,000                                                                     
        common stock (0.0001 par value); 1,000,000,000 shares authorized as of april 30, 2025 and october 31, 2024; 22,776,193 and 20,375,932 shares issued and outstanding as of april 30, 2025 and october 31, 2024, respectively
          2,000                                                                    
        common stock (0.0001 par value); 1,000,000,000 shares authorized as of january 31, 2025 and october 31, 2024; 21,143,772 and 20,375,932 shares issued and outstanding as of january 31, 2025 and october 31, 2024, respectively
           2,000                                                                   
        common stock (0.0001 par value); 1,000,000,000 shares authorized as of october 31, 2024 and october 31, 2023; 20,375,932 and 15,020,872 shares issued and outstanding as of october 31, 2024 and october 31, 2023, respectively
            2,000                                                                  
        common stock (0.0001 par value); 1,000,000,000 shares authorized as of april 30, 2024 and october 31, 2023; 458,406,776 and 450,626,862 shares issued and outstanding as of april 30, 2024 and october 31, 2023, respectively
             46,000                                                                 
        long-term deferred revenue and customer deposits
              686,000 732,000    9,095,000 14,342,000 18,277,000 18,277,000                                                        
        common stock (0.0001 par value); 1,000,000,000 shares authorized as of january 31, 2024 and october 31, 2023; 451,862,054 and 450,626,862 shares issued and outstanding as of january 31, 2024 and october 31, 2023, respectively
              45,000                                                                
        total stockholder's equity
              663,934,000 682,493,000 699,652,000 638,411,000 667,808,000 684,392,000 690,014,000 691,094,000 602,233,000                                                        
        redeemable noncontrolling interest
                   3,030,000 3,030,000 3,030,000                                                         
        common stock (0.0001 par value); 1,000,000,000 shares and 500,000,000 shares authorized as of october 31, 2023 and october 31, 2022; 450,626,862 and 405,562,988 shares issued and outstanding as of october 31, 2023 and october 31, 2022, respectively
               45,000                                                               
        noncontrolling interest
               17,955,000    7,105,000 6,766,000 6,423,000                                                         
        total liabilities, redeemable noncontrolling interests and stockholders' equity
               955,520,000    939,717,000 944,422,000 946,216,000 854,691,000 875,248,000                                                       
        common stock (0.0001 par value); 500,000,000 shares authorized as of july 31, 2023 and october 31, 2022; 444,704,081 and 405,562,988 shares issued and outstanding as of july 31, 2023 and october 31, 2022, respectively
                44,000                                                              
        total liabilities, redeemable series b preferred stock, redeemable noncontrolling interest and total equity
                945,253,000 858,641,000 892,383,000                                                            
        common stock (0.0001 par value); 500,000,000 shares authorized as of april 30, 2023 and october 31, 2022; 406,738,713 and 405,562,988 shares issued and outstanding as of april 30, 2023 and october 31, 2022, respectively
                 41,000                                                             
        common stock (0.0001 par value); 500,000,000 shares authorized as of january 31, 2023 and october 31, 2022; 405,732,053 and 405,562,988 shares issued and outstanding as of january 31, 2023 and october 31, 2022, respectively
                  41,000                                                            
        common stock (0.0001 par value); 500,000,000 shares authorized as of october 31, 2022 and october 31, 2021; 405,562,988 and 366,618,693 shares issued and outstanding as of october 31, 2022 and october 31, 2021, respectively
                   41,000                                                           
        common stock (0.0001 par value); 500,000,000 shares authorized as of july 31, 2022 and october 31, 2021; 394,430,969 and 366,618,693 shares issued and outstanding as of july 31, 2022 and october 31, 2021, respectively
                    39,000                                                          
        common stock (0.0001 par value); 500,000,000 shares authorized as of april 30, 2022 and october 31, 2021; 386,608,869 and 366,618,693 shares issued and outstanding as of april 30, 2022 and october 31, 2021, respectively
                     39,000                                                         
        redeemable noncontrolling interests
                      15,449,000 3,030,000                                                       
        common stock (0.0001 par value); 500,000,000 shares authorized as of january 31, 2022 and october 31, 2021; 366,686,186 and 366,618,693 shares issued and outstanding as of january 31, 2022 and october 31, 2021, respectively
                      37,000                                                        
        preferred stock obligation of subsidiary
                           938,000 932,000 899,000 945,000 950,000 950,000 930,000 951,000 952,000 825,000 837,000 865,000 836,000 862,000 787,000 822,000 802,000 824,000 856,000 769,000 823,000 828,000 894,000 849,000 961,000 989,000 977,000 962,000 1,073,000 1,075,000 1,071,000 1,097,000 1,071,000                   
        long-term preferred stock obligation of subsidiary
                           18,265,000 17,565,000 16,420,000 16,721,000 16,275,000 15,933,000 14,942,000 15,282,000 14,965,000 14,909,000 14,825,000 15,012,000 14,221,000 14,380,000 12,889,000 13,207,000 12,649,000 12,763,000 13,027,000 11,494,000 12,088,000 11,958,000 12,697,000 11,857,000 13,197,000 13,373,000 13,011,000 12,610,000 13,268,000 13,095,000 12,893,000 13,033,000 12,559,000                   
        common stock (0.0001 par value); 500,000,000 and 337,500,000 shares authorized as of october 31, 2021 and october 31, 2020, respectively; 366,618,693 and 294,706,758 shares issued and outstanding as of october 31, 2021 and october 31, 2020, respectively
                       37,000                                                       
        common stock (0.0001 par value); 500,000,000 and 337,500,000 shares authorized as of july 31, 2021 and october 31, 2020, respectively; 366,483,758 and 294,706,758 shares issued and outstanding as of july 31, 2021 and october 31, 2020, respectively
                        37,000                                                      
        total liabilities and stockholders' equity
                        879,632,000 535,591,000 552,394,000  436,769,000 394,641,000 391,399,000  361,434,000 341,227,000 345,955,000  358,196,000 367,619,000 374,874,000                                        
        common stock (0.0001 par value); 500,000,000 and 337,500,000 shares authorized as of april 30, 2021 and october 31, 2020, respectively; 322,492,804 and 294,706,758 shares issued and outstanding as of april 30, 2021 and october 31, 2020, respectively
                         32,000                                                     
        common stock (0.0001 par value); 337,500,000 shares authorized as of january 31, 2021 and october 31, 2020; 322,412,296 and 294,706,758 shares issued and outstanding as of january 31, 2021 and october 31, 2020, respectively
                          32,000                                                    
        liabilities and equity
                                                                              
        stockholders’ equity
                                                                              
        common stock
                           29,000    19,000    10,000    7,000    4,000    3,000    29,000     18,000            7,000          
        total liabilities and stockholders’ equity
                           523,538,000    333,446,000    340,421,000    383,786,000                                       
        common stock (0.0001 par value); 337,500,000 and 225,000,000 shares authorized as of july 31, 2020 and october 31, 2019, respectively; 236,172,797 and 193,608,684 shares issued and outstanding as of july 31, 2020 and october 31, 2019, respectively
                            24,000                                                  
        common stock (0.0001 par value); 225,000,000 shares authorized as of april 30, 2020 and october 31, 2019; 211,052,401 and 193,608,684 shares issued and outstanding as of april 30, 2020 and october 31, 2019, respectively
                             21,000                                                 
        common stock (0.0001 par value); 225,000,000 shares authorized as of january 31, 2020 and october 31, 2019; 210,965,829 and 193,608,684 shares issued and outstanding as of january 31, 2020 and october 31, 2019, respectively
                              21,000                                                
        redeemable series c preferred stock
                                 3,162,000 7,470,000 7,480,000 9,717,000 12,102,000 20,131,000 27,700,000                                       
        redeemable series d preferred stock
                                27,000 20,546,000 26,851,000 27,392,000                                           
        common stock (0.0001 par value); 225,000,000 shares authorized as of july 31, 2019 and october 31, 2018; 118,387,637 and 7,972,686 shares issued and outstanding as of july 31, 2019 and october 31, 2018, respectively
                                12,000                                              
        intangible asset
                                 9,592,000 9,592,000  9,592,000 9,592,000 9,592,000  9,592,000                                      
        common stock (0.0001 par value); 225,000,000 shares authorized as of april 30, 2019 and october 31, 2018; 13,709,330 and 7,972,686 shares issued and outstanding as of april 30, 2019 and october 31, 2018, respectively
                                 1,000                                             
        common stock (0.0001 par value); 225,000,000 shares authorized as of january 31, 2019 and october 31, 2018; 108,415,259 and 95,672,237 shares issued and outstanding as of january 31, 2019 and october 31, 2018, respectively
                                  11,000                                            
        cash and cash equivalents
                                   39,291,000    49,294,000    84,187,000    58,852,000    83,710,000    86,271,000 57,514,000 73,766,000 60,262,000 37,030,000 26,085,000 20,467,000 15,728,000 24,112,000 45,543,000 57,823,000 32,958,000 17,071,000 16,298,000 38,043,000 50,920,000 68,940,000 81,865,000 92,997,000 106,100,000 17,789,000 21,815,000 16,814,000 
        common stock (0.0001 par value); 225,000,000 and 125,000,000 shares authorized as of july 31, 2018 and october 31, 2017, respectively; 92,280,169 and 69,492,816 shares issued and outstanding as of july 31, 2018 and october 31, 2017, respectively
                                    9,000                                          
        common stock (0.0001 par value); 225,000,000 and 125,000,000 shares authorized as of april 30, 2018 and october 31, 2017, respectively; 84,898,762 and 69,492,816 shares issued and outstanding as of april 30, 2018 and october 31, 2017, respectively
                                     8,000                                         
        common stock (0.0001 par value); 225,000,000 and 125,000,000 shares authorized as of january 31, 2018 and october 31, 2017, respectively; 77,602,110 and 69,492,816 shares issued and outstanding as of january 31, 2018 and october 31, 2017, respectively
                                      8,000                                        
        project assets noncurrent
                                       73,001,000   50,530,000 47,111,000 18,370,000 16,671,000 13,059,000 6,922,000                               
        redeemable preferred stock
                                       59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000 59,857,000  59,857,000 59,857,000 59,857,000  59,950,000 59,950,000 59,950,000 59,950,000 59,950,000 59,950,000 59,950,000 59,950,000 59,950,000 59,950,000   
        liabilities and shareholders' equity
                                                                              
        shareholders’ equity:
                                                                              
        common stock (0.0001 par value); 125,000,000 and 75,000,000 shares authorized as of july 31, 2017 and october 31, 2016, respectively; 60,972,037 and 35,174,424 shares issued and outstanding as of july 31, 2017 and october 31, 2016, respectively
                                        6,000                                      
        total shareholders’ equity
                                        99,813,000 100,502,000 105,682,000 114,396,000 125,484,000 94,829,000 96,824,000 95,309,000 98,587,000 100,617,000 103,638,000 99,987,000 98,329,000 42,158,000 27,325,000 6,254,000 14,509,000 25,979,000 36,037,000  16,120,000  20,501,000 1,338,000 16,760,000 31,342,000 20,049,000 11,444,000 28,695,000 47,058,000 69,799,000 94,031,000 116,886,000 134,022,000 148,182,000 82,829,000 228,429,000 258,467,000 
        total liabilities and shareholders' equity
                                        317,268,000 319,543,000 328,224,000                                    
        common stock (0.0001 par value); 125,000,000 and 75,000,000 shares authorized as of april 30, 2017 and october 31, 2016, respectively; 47,575,606 and 35,174,424 shares issued and outstanding as of april 30, 2017 and october 31, 2016, respectively.
                                         5,000                                     
        common stock (0.0001 par value); 75,000,000 shares authorized as of january 31, 2017 and october 31, 2016; 41,219,345 and 35,174,424 shares issued and outstanding as of january 31, 2017 and october 31, 2016, respectively.
                                          4,000                                    
        project assets current
                                               5,260,000                               
        shareholders’ equity
                                                                              
        noncontrolling interest in subsidiaries
                                            -720,000 -663,000 -622,000 -555,000 -510,000 -421,000 -1,626,000 -1,538,000 -1,348,000 -1,187,000 -991,000 -579,000 -381,000 -200,000 -1,066,000 -995,000 -732,000 -663,000 -270,000 -182,000 -86,000              
        total liabilities and equity
                                           342,137,000 329,628,000 309,912,000 294,622,000 277,231,000 289,885,000 290,659,000 288,661,000 280,636,000 279,915,000 228,957,000 240,724,000 209,636,000 191,485,000 197,033,000 215,468,000  170,672,000 150,529,000 157,231,000 137,942,000 158,626,000              
        common stock (0.0001 par value); 75,000,000 and 39,583,333 shares authorized as of july 31, 2016 and october 31, 2015, respectively; 33,527,673 and 25,964,710 shares issued and outstanding as of july 31, 2016 and october 31, 2015, respectively.
                                            3,000                                  
        common stock (.0001 par value); 75,000,000 and 39,583,333 shares authorized as of april 30, 2016 and october 31, 2015, respectively; 30,804,069 and 25,964,710 shares issued and outstanding as of april 30, 2016 and october 31, 2015, respectively.
                                             3,000                                 
        common stock (.0001 par value); 39,583,333 shares authorized as of january 31, 2016 and october 31, 2015; 28,104,525 and 25,964,710 shares issued and outstanding as of january 31, 2016 and october 31, 2015, respectively.
                                              3,000                                
        common stock (.0001 par value); 475,000,000 and 400,000,000 shares authorized as of july 31, 2015 and october 31, 2014, respectively; 305,057,318 and 287,160,003 shares issued and outstanding as of july 31, 2015 and october 31, 2014, respectively.
                                                30,000                              
        common stock (.0001 par value); 400,000,000 shares authorized as of april 30, 2015 and october 31, 2014; 300,990,595 and 287,160,003 shares issued and outstanding as of april 30, 2015 and october 31, 2014, respectively.
                                                 30,000                             
        common stock (.0001 par value); 400,000,000 shares authorized as of january 31, 2015 and october 31, 2014; 291,990,254 and 287,160,003 shares issued and outstanding as of january 31, 2015 and october 31, 2014, respectively.
                                                  29,000                            
        accumulated other comprehensive income
                                                   -159,000 168,000 211,000 81,000 142,000 66,000 -65,000 13,000 13,000 13,000 11,000 11,000 11,000 6,000              
        common stock (.0001 par value); 400,000,000 and 275,000,000 shares authorized as of july 31, 2014 and october 31, 2013, respectively; 283,902,599 and 196,310,402 shares issued and outstanding as of july 31, 2014 and october 31, 2013, respectively.
                                                    28,000                          
        common stock (.0001 par value); 400,000,000 and 275,000,000 shares authorized at april 30, 2014 and october 31, 2013, respectively; 256,424,681 and 196,310,402 shares issued and outstanding at april 30, 2014 and october 31, 2013, respectively.
                                                     26,000                         
        cash and cash equivalents - unrestricted
                                                      78,468,000                        
        common stock (.0001 par value); 275,000,000 shares authorized; 236,457,199 and 196,310,402 shares issued and outstanding at january 31, 2014 and october 31, 2013, respectively.
                                                      24,000                        
        license fee receivable
                                                        10,000,000                      
        investment in and loans to affiliate
                                                        6,115,000 9,826,000 9,904,000 10,075,000 9,653,000  10,079,000 10,260,000 9,904,000              
        accounts payable due to affiliate
                                                        203,000 324,000 493,000 325,000 407,000 575,000 560,000 305,000 284,000 1,584,000 1,744,000 1,282,000 909,000 724,000 911,000 3,003,000 1,372,000      
        common stock (.0001 par value); 275,000,000 shares authorized; 189,496,028 and 185,856,123 shares issued and outstanding at january 31, 2013 and october 31, 2012, respectively.
                                                       19,000                       
        investments — u.s. treasury securities
                                                           4,502,000 39,537,000  36,997,000 3,012,000 5,015,000              
        common stock (.0001 par value); 275,000,000 shares authorized; 185,864,074 and 138,400,497 shares issued and outstanding at july 31, 2012 and october 31, 2011, respectively.
                                                         18,000                     
        accounts receivable - common stock sale
                                                          30,000,000                    
        common stock (.0001 par value); 275,000,000 shares authorized; 185,787,147 and 138,400,497 shares issued and outstanding at april 30, 2012 and october 31, 2011, respectively.
                                                          18,000                    
        total deficit:
                                                                              
        shareholders’ deficit
                                                                              
        common stock (.0001 par value); 225,000,000 shares authorized; 140,583,373 and 138,400,497 shares issued and outstanding at january 31, 2012 and october 31, 2011, respectively.
                                                           13,000                   
        total shareholders’ deficit
                                                           -17,833,000                   
        total deficit
                                                           -18,828,000                   
        total liabilities and deficit
                                                           169,918,000                   
        current portion of long-term debt and other liabilities
                                                            1,998,000 976,000 980,000 984,000 990,000 997,000 847,000 826,000 821,000 795,000 776,000 781,000 849,000 924,000 1,005,000 833,000 460,000 565,000 
        redeemable preferred stock of subsidiary
                                                            17,374,000  16,246,000 15,823,000 15,533,000              
        common stock (.0001 par value); 150,000,000 shares authorized; 123,633,555 and 112,965,725 shares issued and outstanding at january 31, 2011 and october 31, 2010, respectively.
                                                            12,000                  
        investments: u.s. treasury securities
                                                             25,019,000    7,004,000 20,052,000 25,302,000 27,270,000 30,406,000 26,746,000 44,557,000 54,635,000 60,634,000 61,442,000 75,571,000 100,281,000 162,336,000 
        investment and loan to affiliate
                                                             9,837,000    10,064,000 10,299,000 10,491,000 10,689,000 10,405,000 10,939,000 11,177,000 11,792,000 12,216,000 12,438,000    
        deferred revenue, royalty income and customer deposits
                                                             25,499,000 22,576,000 25,331,000 28,311,000 17,013,000             
        long-term deferred revenue and royalty income
                                                             8,042,000 8,436,000 8,943,000 9,533,000 10,124,000             
        redeemable minority interest
                                                             16,849,000    14,976,000 14,443,000 14,073,000 13,800,000 13,307,000 12,835,000 12,559,000 12,322,000 11,884,000 11,464,000 11,056,000   
        redeemable convertible preferred stock
                                                             59,857,000    59,950,000             
        commitments and contingencies
                                                                              
        common stock,
                                                             11,000    8,000             
        common stock (.0001 par value); 150,000,000 shares authorized; 112,950,468 and 84,387,741 shares issued and outstanding at july 31, 2010 and october 31, 2009, respectively
                                                              11,000                
        common stock (.0001 par value); 150,000,000 shares authorized; 85,265,076 and 84,387,741 shares issued and outstanding at april 30, 2010 and october 31, 2009, respectively
                                                               8,000               
        common stock (.0001 par value); 150,000,000 shares authorized; 84,383,259 and 84,387,741 shares issued and outstanding at january 31, 2010 and october 31, 2009, respectively.
                                                                8,000              
        liabilities and shareholders’ equity
                                                                              
        total liabilities and shareholders’ equity
                                                                 162,688,000 149,172,000 134,958,000 164,358,000 185,476,000 210,367,000 223,942,000 242,862,000 253,188,000 262,863,000 186,499,000 254,756,000 281,630,000 
        deferred revenue and customer deposits
                                                                  24,722,000 23,041,000 27,716,000 29,585,000 33,959,000 26,140,000 27,139,000 20,486,000 20,995,000 6,514,000   
        common stock (.0001 par value); 150,000,000 shares authorized at july 31, 2009 and october 31, 2008; 77,223,953 and 68,782,446 shares issued and outstanding at july 31, 2009 and october 31, 2008, respectively.
                                                                  8,000            
        foreign currency translation
                                                                  -5,000 -4,000           
        common stock (.0001 par value); 150,000,000 shares authorized at april 30, 2009 and october 31, 2008; 70,254,465 and 68,782,446 shares issued and outstanding at april 30, 2009 and october 31, 2008, respectively.
                                                                   7,000           
        common stock (.0001 par value); 150,000,000 shares authorized at october 31, 2008 and 2007; 68,782,446 and 68,085,059 shares issued and outstanding at october 31, 2008 and 2007, respectively.
                                                                     7,000         
        deferred license fee income
                                                                      600,000 600,000 600,000    262,000 113,000 
        common stock (.0001 par value); 150,000,000 shares authorized at july 31, 2008 and october 31, 2007; 68,753,256 and 68,085,059 shares issued and outstanding at july 31, 2008 and october 31, 2007, respectively.
                                                                      7,000        
        common stock (.0001 par value); 150,000,000 shares authorized at april 30, 2008 and october 31, 2007; 68,620,459 and 68,085,059 shares issued and outstanding at april 30, 2008 and october 31, 2007, respectively.
                                                                       7,000       
        common stock (.0001 par value); 150,000,000 shares authorized at january 31, 2008 and october 31, 2007; 68,291,750 and 68,085,059 shares issued and outstanding at january 31, 2008 and october 31, 2007, respectively.
                                                                        7,000      
        common stock (.0001 par value); 150,000,000 shares authorized at october 31, 2007 and 2006; 68,085,059 and 53,130,901 shares issued and outstanding at october 31, 2007 and 2006, respectively.
                                                                         7,000     
        common stock (.0001 par value); 150,000,000 shares authorized at july 31, 2007 and october 31, 2006; 67,931,459 and 53,130,901 shares issued and outstanding at july 31, 2007 and october 31, 2006, respectively.
                                                                          7,000    
        equity investments
                                                                           11,266,000 12,258,000 12,840,000 
        common stock (.0001 par value); 150,000,000 shares authorized at january 31, 2007 and october 31, 2006; 53,254,901 and 53,130,901 shares issued and outstanding at january 31, 2007 and october 31, 2006, respectively.
                                                                           5,000   
        current assets :
                                                                              
        preferred stock (0.01 par value...
                                                                            1,000  
        common stock (.0001 par value); 150,000,000 shares authorized at january 31, 2006 and october 31, 2005; 48,762,847 and 48,497,088 shares issued and outstanding at january 31, 2006 and october 31, 2005, respectively.
                                                                            5,000  
        preferred shares of subsidiary
                                                                            11,847,000 10,441,000 
        investments: long-term u.s. treasury securities
                                                                             12,312,000 
        assets held for sale
                                                                              
        preferred stock (0.01 par value); 200,000 shares authorized at july 31, 2005 and october 31, 2004: series b convertible preferred stock; 105,875 shares issued and outstanding at july 31, 2005 and -0- at october 31, 2004
                                                                             1,000 
        common stock (.0001 par value); 150,000,000 shares authorized and 48,294,216 and 48,132,694 shares issued and outstanding at july 31, 2005 and october 31, 2004, respectively
                                                                             5,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2026-04-30 2026-01-31 2025-10-31 2025-07-31 2025-04-30 2025-01-31 2024-04-30 2024-01-31 2023-10-31 2023-07-31 2023-04-30 2023-01-31 2022-10-31 2022-07-31 2022-04-30 2022-01-31 2021-10-31 2021-07-31 2021-04-30 2021-01-31 2020-10-31 2020-07-31 2020-04-30 2020-01-31 2019-10-31 2019-07-31 2019-04-30 2019-01-31 2018-10-31 2018-07-31 2018-04-30 2018-01-31 2017-10-31 2017-07-31 2017-04-30 2017-01-31 2016-10-31 2016-07-31 2016-04-30 2016-01-31 2015-10-31 2015-07-31 2015-04-30 2015-01-31 2014-10-31 2014-07-31 2014-04-30 2014-01-31 2013-10-31 2013-07-31 2013-04-30 2013-01-31 2012-10-31 2012-07-31 2012-04-30 2012-01-31 2011-10-31 2011-07-31 2011-04-30 2011-01-31 2010-10-31 2010-07-31 2010-04-30 2010-01-31 2009-10-31 2009-07-31 2009-04-30 2009-01-31 2008-10-31 2008-07-31 2008-04-30 2008-01-31 2007-10-31 2007-01-31 2006-01-31 
                                                                                   
          cash flows from operating activities:
                                                                                   
          net loss
        -77,629,000 -26,051,000 -29,341,000 -91,896,000 -37,749,000 -32,386,000     -33,911,000 -21,086,000 -42,009,000 -28,977,000 -30,126,000 -46,120,000 -24,151,000 -11,997,000 -18,917,000 -45,960,000 -18,856,000 -15,331,000 -14,769,000 -40,151,000 -35,179,000 -5,311,000 -19,530,000 -17,548,000 -14,096,000 -15,881,000 -13,174,000 -4,183,000 -9,979,000 -17,001,000 -13,238,000 -13,685,000 -12,948,000 -11,067,000 -15,414,000 -11,779,000 -8,905,000 -6,628,000 -9,997,000 -4,154,000 -4,890,000 -7,139,000 -16,039,000 -10,815,000 -9,997,000 -5,814,000 -7,629,000 -11,879,000 -11,519,000 -10,010,000 -8,363,000 -6,014,000 -7,129,000 -7,830,000 -20,008,000 -11,007,000 -12,516,000 -13,114,000 -15,978,000 -14,718,000 -14,760,000 -14,915,000 -19,080,000 -19,919,000 -23,484,000 -25,980,000 -24,976,000 -18,917,000 -15,994,000   
          adjustments to reconcile net loss to net cash from operating activities:
                                                                                   
          share-based compensation
        2,628,000 2,392,000 2,431,000 1,691,000 4,824,000 2,142,000 3,001,000 2,876,000 2,957,000 3,166,000 3,194,000 2,637,000 1,666,000 1,961,000 1,695,000 1,470,000 720,000 903,000 1,253,000 1,417,000 607,000 398,000 375,000 488,000 479,000 385,000 958,000 982,000 929,000 931,000 761,000 617,000 1,153,000 1,206,000 1,213,000 1,013,000 895,000 867,000 805,000 858,000 840,000 810,000 746,000 761,000 726,000 855,000 706,000 621,000 607,000 597,000 513,000 509,000 537,000 674,000 303,000 540,000 528,000 441,000 828,000 780,000  791,000 735,000 642,000            
          depreciation and amortization
        10,842,000 10,518,000 9,818,000 9,746,000 10,890,000 9,946,000 9,552,000 8,599,000 6,716,000 6,623,000 6,631,000 5,405,000 4,905,000 5,266,000 5,332,000 5,771,000 4,951,000 4,509,000 4,808,000 5,604,000 5,549,000 4,726,000 4,472,000 4,630,000                                                 2,181,000  2,300,000 
          non-cash interest expense on finance obligations
        703,000 663,000 588,000 585,000 587,000 601,000 535,000 546,000  502,000 1,019,000 1,052,000                                                                
          unrealized loss on derivative contracts
          -2,146,000 -1,561,000 2,399,000 -2,700,000 -367,000 5,387,000                                                                    
          operating lease costs
        422,000 422,000 407,000 332,000 340,000 333,000 348,000 355,000 327,000 415,000 421,000 323,000 374,000 368,000 384,000 395,000                                                            
          operating lease payments
        -371,000 -360,000 -311,000 -348,000 -354,000 -328,000 -456,000 -244,000 -315,000 -267,000 -343,000 -301,000 -354,000 -354,000 -358,000 -372,000 -324,000 -316,000 -302,000 -284,000 -279,000 -277,000 -249,000 -211,000                                                    
          impairment expense
          1,314,000                                                                         
          other
        -26,000 53,000 -2,000 20,000 100,000 60,000 11,000 216,000 276,000 -132,000 96,000                                                                
          decrease in operating assets:
                                                                                   
          accounts receivable
        -1,459,000 -2,226,000 5,951,000 83,000 -791,000 2,509,000 -3,809,000 463,000 6,293,000 -3,655,000 -3,234,000 1,672,000 7,216,000 3,365,000 14,590,000 -15,972,000 -548,000 -2,035,000 -2,126,000 -458,000 -2,199,000 -1,247,000 -524,000 -2,301,000 533,000 6,480,000 -3,500,000 1,329,000 15,622,000 8,730,000 -2,245,000 26,624,000 -41,980,000 -276,000 -6,445,000 -2,575,000 3,645,000 9,589,000 508,000 16,493,000 -5,866,000 -11,815,000 17,107,000 3,747,000  -4,820,000      17,020,000  -3,201,000 6,868,000 -1,942,000 -5,267,000 3,269,000 3,200,000 -5,248,000 -4,491,000 4,201,000 5,875,000 -1,105,000 -5,640,000 -2,895,000 16,018,000 -14,275,000 3,650,000 -6,918,000 -2,439,000 -313,000 131,000 1,373,000 -397,000 
          unbilled receivables
        -15,254,000 -7,138,000 -33,029,000 -19,374,000 -13,039,000 -697,000 -2,680,000 -3,048,000 3,689,000 -4,446,000 -16,199,000 -4,965,000 -41,000 52,000 4,127,000 -4,369,000 1,810,000 -4,774,000 2,821,000 -3,466,000 -2,863,000 -2,086,000 -1,195,000 554,000 1,115,000 -2,113,000 4,338,000 -7,828,000                                                
          inventories
        64,000 -2,945,000 17,929,000 9,928,000 2,214,000 -14,200,000 -11,059,000 -18,403,000 -662,000 1,733,000 13,882,000 -10,267,000 -5,275,000 -2,762,000 -17,492,000 -2,529,000 -7,741,000 2,603,000 -5,015,000 -8,602,000 563,000 3,443,000 -337,000 -5,780,000 2,007,000 -4,966,000 -2,241,000 -1,227,000 9,576,000 -8,843,000 16,197,000 14,784,000 -2,512,000 -3,681,000 6,683,000 -8,462,000 4,398,000 -11,982,000 -5,946,000 5,478,000 9,576,000 -3,694,000 -15,257,000 -725,000 635,000 -48,000 -3,861,000 4,333,000 -8,952,000 2,638,000 -2,823,000 3,236,000 1,294,000 3,691,000 -6,382,000 -6,203,000 -1,369,000 -2,533,000 -3,847,000 1,052,000 -2,830,000 -290,000 1,138,000 -5,989,000 -400,000 -2,200,000 3,241,000 -1,551,000 2,593,000 3,837,000 4,458,000 -5,830,000 -5,670,000 -2,840,000 -1,989,000 
          other assets
        775,000 485,000 4,139,000 -3,666,000 -4,353,000 -2,000,000 -687,000 -1,616,000 -1,067,000 -1,446,000 -9,571,000 -1,006,000 4,095,000 -33,000 -4,160,000 -1,994,000 1,752,000 -351,000 -1,976,000 -954,000 400,000 -1,409,000 853,000 -1,141,000 386,000 1,174,000 421,000 139,000 247,000 -1,129,000 -274,000 -1,108,000 -799,000 451,000 -1,627,000 1,261,000 -945,000 -463,000 451,000 120,000 3,988,000 -28,000 -81,000 -2,857,000 1,818,000 -2,085,000 1,154,000 2,530,000 6,239,000 547,000 29,000 -739,000 885,000 1,081,000 1,946,000 -880,000 -5,377,000 -4,949,000 -3,650,000 -1,610,000 -1,935,000 -47,000 -1,346,000 2,543,000 1,485,000 542,000 -179,000 554,000 -45,000 -161,000 -1,072,000 -184,000 313,000 -1,220,000 -1,712,000 
          increase in operating liabilities:
                                                                                   
          accounts payable
        2,310,000 -3,122,000 1,185,000 -4,897,000 4,288,000 -3,334,000 -232,000 -6,027,000 2,094,000 2,393,000 -414,000 -1,072,000 78,000 3,686,000 8,000 2,560,000 1,320,000 -2,612,000 5,167,000 -1,887,000 -8,000 -3,183,000 -1,387,000 -2,481,000 -9,523,000 368,000 9,134,000 -152,000 -23,409,000 273,000 6,188,000 -2,898,000 33,167,000 -3,310,000 223,000 -5,060,000 -2,823,000 927,000 18,000 -1,141,000 -3,462,000 -1,029,000 -2,265,000 -468,000 7,052,000 1,304,000 -3,784,000 -6,138,000 2,583,000 2,389,000 12,149,000 -5,345,000 1,262,000 -1,505,000 -5,466,000 3,919,000 -1,675,000 3,883,000 1,567,000 -370,000   -1,397,000 -2,095,000 -376,000 1,206,000 -7,139,000 -741,000 -289,000 276,000 5,906,000 -1,279,000 4,375,000 -4,326,000 2,298,000 
          accrued liabilities
        427,000 -6,358,000 140,000 4,524,000 1,907,000 -6,689,000 3,005,000 -3,990,000 -307,000 166,000 2,805,000 -7,125,000 10,146,000 6,413,000 -1,970,000 10,027,000 2,871,000 310,000 2,754,000 -5,618,000 1,004,000 3,684,000 1,593,000 -816,000 2,841,000 -2,692,000 -304,000 2,532,000 -6,811,000 -296,000 -7,312,000 3,074,000 5,257,000 -1,863,000 -3,534,000 -2,150,000 1,385,000 -6,464,000 -3,653,000 9,972,000 1,890,000 5,179,000 -503,000 -131,000 429,000 -598,000 264,000 -11,151,000 2,496,000 -227,000 -1,415,000 -1,026,000 -189,000 -3,221,000 584,000 -3,255,000 1,441,000 -948,000 10,517,000 -249,000 1,082,000 545,000 393,000 1,742,000 1,083,000 2,487,000 686,000 -470,000 2,075,000 807,000 -166,000 1,108,000 721,000 2,723,000 -182,000 
          deferred revenue
        2,218,000 3,785,000 -1,937,000 3,534,000 -1,148,000 1,033,000 3,441,000 1,164,000 24,000 -1,668,000 -2,584,000 -18,070,000 -9,299,000 -13,379,000 9,665,000 1,735,000 -709,000    774,000 -1,410,000 -2,602,000 4,962,000 2,293,000 -961,000 -1,181,000 5,845,000 1,120,000 -245,000 -1,528,000 1,914,000 -1,522,000 69,000 -228,000 775,000 -11,315,000 -6,022,000 -5,990,000 -3,321,000 -8,189,000 -4,722,000 2,295,000 6,718,000 -7,996,000 -5,284,000 3,733,000 -2,742,000 -5,669,000 -4,898,000 -7,719,000 27,434,000 4,842,000 -4,312,000 -3,988,000 -6,184,000 26,257,000 6,139,000 -6,934,000 12,111,000              -871,000 962,000 
          net cash from operating activities
        -27,296,000 -33,937,000 -22,864,000 -26,832,000 -29,885,000 -45,710,000 -37,123,000 -58,267,000 -15,828,000 -35,752,000 -35,293,000 -53,377,000 -24,079,000 -23,381,000 -16,953,000 -47,754,000 -9,853,000 -19,423,000 -10,845,000 -30,317,000 -12,204,000 -9,858,000 -8,213,000 -6,506,000 -12,265,000 -110,000 -6,239,000 -11,958,000 -13,024,000 -12,569,000 1,918,000 39,997,000 -14,024,000 -19,246,000 -13,728,000 -24,847,000 -84,000 -25,013,000 -30,094,000 8,596,000 -8,793,000 -23,173,000 -10,037,000 -2,271,000 -25,866,000 -15,924,000 -10,604,000 -5,074,000 -18,769,000 -13,995,000 -14,791,000 30,897,000 -13,412,000 -15,156,000 -12,289,000 -17,802,000 9,526,000 823,000 -16,681,000 -2,153,000 -11,892,000 -6,604,000 -10,850,000 -5,646,000 -12,473,000 -11,446,000 -7,302,000 -33,982,000 -16,114,000 -16,182,000 -14,869,000 -14,242,000 -13,243,000 -20,318,000 -12,020,000 
          cash flows from investing activities:
                                                                                   
          capital expenditures
        -1,704,000 -773,000 -1,015,000 -5,245,000 -5,281,000 -7,060,000 -13,208,000 -10,565,000 -11,253,000 -11,199,000 -9,138,000 -7,765,000 -5,288,000 -5,395,000 -5,064,000 -5,331,000 -3,446,000 -1,947,000 -756,000 -204,000 -222,000 -105,000 9,000 -64,000 -229,000 169,000 -500,000 -1,591,000 -2,403,000 -2,119,000 -2,690,000 -2,816,000 -1,882,000 -2,179,000 -1,913,000 -6,377,000 -3,764,000 -1,689,000 -959,000 -1,314,000 -3,090,000 -519,000 -1,705,000 -1,616,000 -2,959,000 -2,202,000 -1,128,000 -790,000 -2,534,000 -1,464,000 -1,156,000 -1,397,000 -1,807,000 -965,000 -755,000 -926,000 -2,175,000 -475,000 -449,000 -251,000 -327,000 -1,025,000 -660,000 -522,000 -122,000 -752,000 -1,192,000 -1,717,000 -2,623,000 -1,561,000 -1,467,000 -922,000 -1,623,000 -3,582,000 
          free cash flows
        -29,000,000 -34,710,000 -23,879,000 -32,077,000 -35,166,000 -52,770,000 -50,331,000 -68,832,000 -27,081,000 -46,951,000 -44,431,000 -61,142,000 -29,367,000 -28,776,000 -22,017,000 -53,085,000 -13,299,000 -21,370,000 -11,601,000 -30,521,000 -12,426,000 -9,963,000 -8,204,000 -6,570,000 -12,494,000 59,000 -6,739,000 -13,549,000 -15,427,000 -14,688,000 -772,000 37,181,000 -15,906,000 -21,425,000 -15,641,000 -31,224,000 -3,848,000 -26,702,000 -31,053,000 7,282,000 -11,883,000 -23,692,000 -11,742,000 -3,887,000 -28,825,000 -18,126,000 -11,732,000 -5,864,000 -21,303,000 -15,459,000 -15,947,000 29,500,000 -15,219,000 -16,121,000 -13,044,000 -18,728,000 7,351,000 348,000 -17,130,000 -2,404,000 -11,892,000 -6,931,000 -11,875,000 -6,306,000 -12,995,000 -11,568,000 -8,054,000 -35,174,000 -17,831,000 -18,805,000 -16,430,000 -15,709,000 -14,165,000 -21,941,000 -15,602,000 
          project asset expenditures
        -3,985,000 -2,208,000 -94,000 -3,623,000 88,000 -310,000 -681,000 -7,520,000 -17,615,000 -15,639,000 -17,673,000 -2,080,000 -1,880,000 -5,000,000 -8,258,000 -10,435,000 -25,576,000 -20,089,000 -16,825,000 -4,387,000 -8,034,000 -9,860,000 -6,009,000 -7,624,000 -9,798,000 5,398,000 -14,642,000 -12,633,000  -6,662,000 -17,172,000 -4,577,000  -2,642,000 -7,101,000 -3,053,000  -1,781,000 -2,680,000 -2,044,000                                    
          maturity of held-to-maturity debt securities
          60,925,000 332,515,000 378,930,000 30,480,000 230,375,000 78,240,000 57,520,000                                                                  
          purchases of held-to-maturity debt securities
          -282,054,000 -378,915,000 -130,888,000 -125,397,000 -103,244,000 -57,605,000 -63,267,000 -74,977,000                                                                
          net cash from investing activities
        -5,689,000 -2,981,000 -1,109,000 52,057,000 45,268,000 -7,355,000 -114,297,000 86,893,000 -53,872,000 -26,923,000 -26,748,000 -84,822,000 -7,168,000 -10,395,000 -13,322,000 -15,766,000 -29,022,000 -22,036,000 -17,581,000 -4,591,000 -8,256,000 -9,965,000 -6,000,000 -8,299,000 -10,027,000 -29,907,000 -15,142,000 -14,224,000 -15,224,000 -8,781,000 -19,862,000 -7,393,000 -8,812,000 -4,821,000 -9,014,000 -8,797,000 -30,985,000 -3,470,000 -3,639,000 -3,358,000 -3,090,000 -519,000 -1,705,000 -1,616,000 -2,959,000 -2,202,000 -1,128,000 -790,000 -2,534,000 -1,464,000 -1,156,000 -1,040,000 -1,807,000 -965,000 3,745,000 6,574,000 3,825,000 -1,075,000 25,528,000 -10,247,000 17,534,000 -32,837,000 -9,221,000 -5,734,000 12,478,000 4,878,000 8,248,000 12,208,000 2,654,000 -3,532,000 2,244,000 2,453,000 52,000 12,481,000 12,337,000 
          cash flows from financing activities:
                                                                                   
          repayment of debt and finance obligations
        -4,733,000 -4,870,000 -4,016,000 -4,082,000 -3,305,000 -3,037,000 -2,653,000 -2,595,000                                                                    
          proceeds from the issuance of debt
        25,036,000       20,000,000                                                                   
          payment for deferred financing costs
        -2,262,000 -1,000 -56,000 37,000 -152,000                                                                      
          common stock issued for stock plans and related expenses
        9,000 35,000 16,000       21,000 26,000    8,000    -8,000 31,000                                                
          contributions received from sale of noncontrolling interest
        4,000,000   25,122,000                                                                    
          distribution to noncontrolling interest
        -473,000 -637,000 -471,000 -473,000 -565,000 -600,000 -425,000 -236,000  -150,000 -143,000 -106,000 -119,000 -94,000                                                              
          payments for taxes related to net share settlement of equity awards
        -107,000 -593,000 -46,000 -17,000 -7,000 -483,000 -50,000 -995,000 -457,000 -91,000 -337,000 -1,600,000 -1,000 -1,000 -285,000                                                            
          common stock issuance, net of fees
        100,391,000 54,917,000 134,059,000 38,069,000 7,665,000 5,892,000    83,267,000         5,000 156,363,000                                                        
          payment of preferred dividends
        -800,000 -800,000 -800,000 -800,000 -800,000 -800,000 -800,000 -800,000 -800,000 -800,000 -800,000 -800,000 -800,000 -800,000                                              -800,000 -798,000 -980,000 -1,115,000 -802,000 -802,000 -965,000 -1,062,000 -802,000 -802,000 -999,000 -1,039,000 -802,000 -802,000 -802,000 -1,323,000 
          net cash from financing activities
        94,278,000 74,800,000 128,725,000 32,676,000 3,025,000 4,836,000 14,592,000 20,564,000 32,906,000 122,187,000 -513,000 -3,513,000 33,260,000 23,948,000 114,545,000 8,830,000 5,139,000 364,303,000 -9,926,000 52,392,000 105,094,000 53,823,000 13,761,000 48,989,000 16,487,000 22,729,000 6,289,000 14,150,000 21,179,000 3,546,000 7,646,000 -4,654,000 36,548,000 13,503,000 5,547,000 16,694,000 28,356,000 40,879,000 38,351,000 13,072,000 4,919,000 6,291,000 10,115,000 5,129,000 4,924,000 61,853,000 -2,612,000 16,656,000 7,618,000 40,787,000 -3,595,000 -1,176,000 -1,164,000 29,703,000 31,776,000 -3,155,000 6,584,000 -5,248,000 2,046,000 18,016,000 -903,000 31,057,000 -1,365,000 -908,000 24,857,000 22,456,000 -169,000 29,000 583,000 1,694,000 -300,000 657,000 88,000 -621,000 -1,204,000 
          effects on cash from changes in foreign currency rates
        -41,000 -74,000 186,000 -163,000 286,000 -232,000 -78,000 33,000 -52,000 -164,000 -151,000 447,000 -607,000 -86,000 -149,000 -91,000 -72,000 -6,000 -60,000 58,000 138,000 -139,000 -42,000 -49,000 -216,000 105,000 -140,000 7,000 53,000 -128,000 54,000 33,000 -32,000 199,000 32,000 -70,000 -9,000 -228,000 420,000 -218,000 296,000 -64,000 -52,000 -288,000 -327,000 -43,000 130,000 -20,000 22,000 -8,000 -55,000 76,000 131,000 -78,000 -2,000 2,000 2,000  5,000 8,000            
          net increase in cash, cash equivalents and restricted cash
        61,252,000 37,808,000 104,938,000   -48,461,000  49,223,000 -36,846,000 59,348,000   1,406,000 -9,914,000 84,121,000 -54,781,000 -33,808,000 322,838,000 -38,412,000 17,542,000  33,861,000 -494,000 34,135,000   -15,232,000 -12,025,000   -10,244,000 27,983,000  -10,365,000 -17,163,000 -17,020,000                                        
          cash, cash equivalents and restricted cash-beginning of period
        341,792,000 208,883,000 299,576,000 481,044,000 460,212,000 192,052,000  39,778,000  80,239,000  87,448,000  118,316,000                                        
          cash, cash equivalents and restricted cash-end of period
        61,252,000 379,600,000 104,938,000 57,738,000 18,694,000 160,422,000 -136,906,000 348,799,000 -36,846,000 59,348,000 -62,705,000 339,779,000 1,406,000 -9,914,000 84,121,000 405,431,000 -33,808,000 322,838,000 -38,412,000 209,594,000  33,861,000 -494,000 73,913,000  -7,183,000 -15,232,000 68,214,000  -17,932,000 -10,244,000 115,431,000  -10,365,000 -17,163,000 101,296,000                                        
          reconciliation of cash, cash equivalents and restricted cash
                                                                                   
          cash and cash equivalents, unrestricted
        61,389,000 311,778,000 103,437,000 58,601,000 17,991,000 98,070,000 -138,676,000 297,466,000                                                                    
          restricted cash and cash equivalents - short-term
        -1,098,000 17,675,000 509,000 3,753,000 -288,000 12,627,000 -988,000 5,957,000                                                                    
          restricted cash and cash equivalents - long-term
        961,000 50,147,000 992,000 -4,616,000 991,000 49,725,000 2,758,000 45,376,000                                                                    
          total cash, cash equivalents and restricted cash
        61,252,000 379,600,000 104,938,000 57,738,000 18,694,000 160,422,000 -136,906,000 348,799,000                                                                    
          supplemental cash flow disclosures:
                                                                                   
          cash interest paid
        1,908,000 1,868,000  1,830,000 1,807,000 1,867,000 1,587,000 1,638,000  811,000 320,000 343,000          3,006,000 2,630,000 558,000  1,050,000 811,000 827,000  816,000 493,000 651,000  -799,000 2,065,000 756,000  754,000 182,000 359,000  154,000 171,000 155,000  111,000 82,000 1,535,000  134,000 82,000 55,000  73,000 93,000 63,000  49,000 12,000 54,000  10,000 45,000 63,000            
          noncash financing and investing activity:
                                                                                   
          noncash reclassifications from inventory to project assets
           2,148,000 4,586,000      3,482,000 4,217,000                                                            
          accrued purchases of fixed assets, cash to be paid in subsequent period
        -195,000 800,000  -1,300,000 -185,000 2,398,000 2,298,000 1,162,000                                                                    
          accrued purchases of project assets, cash to be paid in subsequent period
        -198,000 269,000  46,000 3,000 23,000 -943,000 1,563,000                                                                    
          unrealized gain on derivative contracts
         -4,055,000                                                                          
          gain on extinguishment of finance obligations and debt
                                                                                   
          unrealized foreign currency losses
               59,000   -21,000 5,000 -1,000 6,000 660,000 -82,000  38,000 25,000 848,000                                                        
          addition of operating lease liabilities
                             410,000                                                      
          addition of operating lease right-of-use assets
                             410,000                                                      
          net decrease in cash, cash equivalents and restricted cash
                   -141,265,000                                                                
          contributions received from sale of noncontrolling interest, net of return of capital
             4,000,000                                                                     
          impairment of property, plant and equipment and project assets
                                                                                 
          payment for debt issuance costs
                                                                                   
          expenses related to common stock issued for stock plans
              68,000  35,000 21,000                                                                
          recognition of operating lease liabilities
                                                                                  
          recognition of operating lease right-of-use assets
                                                                                  
          net income
               -44,399,000 -29,458,000                                                                 -19,236,000 -15,075,000 
          adjustments to reconcile net income to net cash from operating activities:
                                                                                   
          decrease (increase) in operating assets:
                                                                                   
          decrease in operating liabilities:
                                                                                   
          ​
                                                                                   
          change in fair value of common stock warrant liability
                        15,974,000 -2,225,000 1,694,000 3,372,000 34,245,000                                                    
          gain on series 1 preferred stock extinguishment
                            -475,000                                                    
          non-cash interest expense on preferred stock and debt and finance obligations
                    1,055,000                                                               
          (gain) loss on extinguishment of debt and finance obligations
                                                                                   
          unrealized gain on derivative contract
                     -36,000                                                              
          unrealized foreign currency (gains) losses
                -28,000                                                                   
          repayment of debt
                  -2,237,000 -2,291,000 -2,336,000 -2,351,000 -2,327,000 -2,530,000 -4,691,000 -2,282,000 -9,377,000 -82,292,000 -2,326,000 -6,382,000 -5,874,000 -15,535,000 -25,365,000 -18,239,000 -3,181,000 -1,610,000 -3,536,000 -2,161,000 -4,666,000 -6,253,000 -1,104,000 -1,168,000 -1,228,000 -5,071,000 -20,903,000 -454,000 -179,000 -8,916,000 -149,000 -1,146,000 -119,000 -121,000 -113,000 -93,000 -5,670,000 -95,000 -89,000 -119,000 -103,000 -63,000 -46,000 -20,000 -52,000 -55,000 -74,000 -167,000 -1,000 -64,000  -94,000 -99,000 -106,000 -61,000 -56,000 -67,000 -53,000 85,000 -282,000 -130,000 -122,000  -98,000  
          distribution to noncontrolling interests
                                                                                   
          payment for early extinguishment of debt
                                                                                   
          payment of deferred financing costs
                            -242,000 -2,455,000  -1,222,000 -798,000 -485,000                                              
          repayment of series 1 preferred stock obligation
                                                                                   
          proceeds from sale of common stock and warrant exercises, net of fees
                    38,115,000                                                               
          increase in operating assets:
                                                                                   
          noncash reclassification from inventory to fixed assets
                                                                                   
          noncash reclassifications from other assets to project assets
                                                                                  
          accrued purchase of fixed assets, cash to be paid in subsequent period
                 -1,591,000 5,000 3,055,000  2,355,000 -229,000 1,077,000  -176,000 444,000 47,000   59,000 9,000                                                    
          accrued purchase of project assets, cash to be paid in subsequent period
                 526,000 -3,105,000 5,250,000  1,413,000 -2,555,000 7,640,000  -2,203,000 2,239,000 839,000  91,000 778,000 495,000                                                    
          unrealized loss on derivitive contract
                                                                                   
          return of capital to noncontrolling interest
                                                                                   
          non-cash interest income on investments
                   -675,000                                                                
          operating lease liabilities
                   2,005,000      123,000 1,336,000    489,000                                                    
          operating lease right-of-use assets
                   2,005,000      123,000 1,336,000    489,000                                                    
          loss on series 1 preferred stock extinguishment
                                                                                   
          loss on extinguishment of debt and finance obligations
                                                                                   
          unrealized loss on derivative contract
                        -179,000 -71,000   -149,000 -63,000   192,000                                                   
          asset acquisition
                                                                                  
          proceeds from debt, net of debt discount
                            20,895,000 66,862,000                                                    
          repayment of series 1 preferred share obligation
                                                                                   
          non-cash charge for extinguishment of preferred stock obligation of subsidiary
                           934,000                                                        
          non-cash charge for extinguishment of debt
                         7,156,000                                                        
          impairment of property, plant and equipment
                     976,000                                                           
          other non-cash transactions
                     -13,000 182,000 -316,000 825,000 -201,000 -256,000 628,000 -409,000 317,000 458,000 308,000 -160,000 750,000 -61,000 187,000 557,000   -76,000 114,000 127,000 148,000 100,000 203,000 594,000 -169,000 112,000 -125,000 -496,000 555,000 212,000 -696,000 -743,000 291,000 -140,000 210,000 74,000 -187,000 171,000 -175,000                    
          cash interest paid and early prepayment charge
                     378,000 486,000 329,000  -3,464,000 605,000 8,185,000                                                        
          warrant exercises
                         21,170,000    25,994,000                                                    
          accrued sale of common stock, cash received in a subsequent period
                                                                                   
          non-cash interest expense on preferred stock and debt obligations
                      1,033,000 1,066,000 1,035,000 928,000 909,000 1,566,000 2,185,000 1,888,000 1,906,000 1,591,000 1,433,000 2,089,000 1,001,000 1,574,000  1,573,000 1,354,000 1,491,000                                            
          proceeds from warrant exercises
                                                                                   
          contributions received from sale of redeemable noncontrolling interest
                       12,419,000                                                            
          proceeds from sale of common stock and warrant exercises
                          269,000 654,000 108,457,000 61,235,000 3,502,000 28,149,000     6,745,000                                              
          payment of preferred dividends and return of capital
                       -800,000 -800,000 -800,000 -800,000 -800,000 -1,037,000 -1,035,000 -1,018,000 -3,385,000 -804,000 -1,036,000 -1,044,000 -1,038,000 -1,048,000 -1,048,000 -1,054,000 -1,035,000 -1,034,000 -1,033,000 -1,045,000 -1,049,000 -1,043,000 -1,033,000 -1,048,000 -1,010,000 -1,050,000 -1,094,000 -1,079,000 -1,089,000 -1,062,000 -1,113,000 -1,103,000 -1,113,000 -1,113,000 -1,113,000 -1,118,000 -1,231,000 -987,000 -4,288,000 -5,232,000 -5,588,000                  
          loss on extinguishment of debt and financing obligation
                                                                                   
          non-cash charge (benefit) for extinguishment of preferred stock obligation of subsidiary
                                                                                  
          operating lease expense
                         382,000 383,000 378,000  163,000 159,000 156,000                                                    
          project asset acquisition
                             -611,000                                                    
          issuances of common stock issued for benefit plans, net fees
                                                                                   
          repayment of preferred stock obligation of subsidiary
                         -21,541,000                                                        
          proceeds from sales of common stock and warrant exercises
                                                                                   
          net noncash reclassifications from project assets to inventory
                         -2,957,000 6,857,000 2,072,000                                                        
          deferred revenue, royalty & license fee income
                          -145,000 2,407,000                                                        
          fees for common stock issued for benefit plans, net of issuances
                                                                                   
          gain on extinguishment of financing obligation
                                                                                  
          deferred income taxes
                                    -3,035,000                                            
          net proceeds from issuance of series d preferred shares
                                                                                   
          net increase in cash, cash equivalents, and restricted cash
                                                                                   
          cash, cash equivalents, and restricted cash-beginning of year
                                                                                   
          cash, cash equivalents, and restricted cash-end of year
                                                                                   
          loss from change in fair value of embedded derivatives
                                -230,000 28,000 4,000 22,000 7,000 8,000 -10,000 55,000 -3,000 69,000 -17,000 42,000         -10,000                               
          unrealized foreign exchange gains
                             636,000 -864,000 -84,000  306,000             1,405,000 -845,000  -866,000                                  
          series c preferred share conversions
                                 3,162,000 10,355,000 1,974,000  2,385,000 8,029,000 7,569,000                                            
          series c preferred share modification
                                 -12,094,000                                                  
          series d preferred share conversions
                                 20,519,000 6,305,000 4,334,000                                                
          cashless warrant exercises
                                                                                  
          net noncash reclasses from project assets to inventory
                              -1,604,000 2,756,000                                                    
          depreciation
                                4,034,000 3,921,000 2,199,000 2,199,000 2,123,000 2,223,000 2,174,000 2,128,000 2,016,000 2,206,000 2,239,000 2,057,000 1,366,000 1,241,000 1,191,000 1,151,000 1,101,000 1,054,000 981,000 963,000 1,087,000 1,119,000 1,110,000 1,068,000 1,053,000 983,000 1,049,000 1,012,000 1,018,000 1,321,000 1,404,000 1,449,000 1,618,000 1,628,000 1,551,000 1,634,000  1,809,000 1,849,000 1,923,000  2,173,000 2,190,000 2,179,000  2,187,000 2,214,000 2,173,000  2,445,000  
          unrealized foreign exchange losses
                                   -12,000    534,000  1,311,000 -599,000 340,000                                        
          proceeds from debt
                                14,500,000 26,774,000 11,072,000 17,250,000   -14,000 17,891,000 41,154,000 -21,000 24,700,000 20,102,000 437,000 3,326,000   250,000 3,750,000 38,875,000               436,000 901,000 2,035,000    165,000  
          payments of deferred finance costs
                                                                                   
          net proceeds from issuance of series c preferred shares
                                                                                   
          net decrease increase in cash, cash equivalents, and restricted cash
                                                                                   
          project asset impairment
                                                                                  
          net noncash reclass of project assets to inventory
                                     -3,984,000                                              
          accrued purchase of fixed assets, cash paid in subsequent period
                                  -72,000 107,000  525,000 -958,000 1,231,000  -235,000 715,000 1,101,000                                        
          accrued purchase of project assets, cash paid in subsequent period
                                  -1,157,000 2,050,000  522,000 -246,000 1,750,000  2,482,000 -626,000 741,000                                        
          amortization of non-cash interest expense
                                                                                   
          foreign currency transaction losses
                                                                                   
          expenditures for long-term project assets
                                                                                   
          cash acquired from acquisition
                                                        357,000                        
          purchase of non-controlling shares of subsidiary
                                                                                   
          proceeds from common stock issuance and warrant exercises, net of registration fees
                                                                                   
          cash acquired from asset acquisition
                                         633,000                                        
          cash received for common stock issued for stock plans
                                         36,000 1,000 49,000                                        
          common stock issued for employee stock purchase plan in settlement of prior year accrued employee contributions
                                         50,000  105,000  168,000  106,000  85,000  84,000  67,000 58,000                
          assumption of debt in conjunction with asset acquisition
                                         2,289,000                                        
          acquisition of project assets
                                         2,386,000                                        
          proceeds from sale of common stock, prefunded warrants and warrant exercises
                                       2,647,000                                            
          project assets
                                             -2,079,000 -4,441,000 -8,939,000 -543,000 -1,694,000 -4,233,000 -4,928,000                                
          interest expense on preferred stock and debt obligations
                                         1,649,000 1,488,000 1,470,000  967,000                                      
          noncash reclass of inventory to project assets
                                                                                   
          proceeds from sale of common stock
                                          7,808,000 4,977,000                                        
          accrued sale of common stock, cash received in subsequent period
                                           159,000   -35,000 475,000   488,000 33,000                193,000                
          payment of deferred finance costs
                                           -119,000                                       
          accrued grant awards
                                               1,099,000                                    
          gain from change in fair value of embedded derivatives
                                            2,000 -8,000 76,000 -84,000  -33,000 36,000 -39,000   84,000 -225,000                            
          make whole derivative expense
                                                    -305,000 6,230,000 2,422,000                            
          amortization of convertible note discount and non-cash interest expense
                                                                                   
          foreign currency transaction gains
                                                                                   
          proceeds from sale of common stock, net of registration fees
                                              13,276,000 13,306,000 4,999,000 5,288,000 8,285,000 8,488,000 6,116,000 62,874,000 3,099,000 33,755,000 5,060,000     30,000,000 32,815,000 1,188,000  907,000 3,653,000 17,880,000                
          increase in restricted cash and cash equivalents
                                             23,000 2,591,000 -10,387,000  -300,000 -1,000 -2,144,000   1,021,000 -16,141,000                            
          proceeds from sale of common stock, warrants and pre-funded warrants
                                                                                   
          net increase in cash and cash equivalents
                                             12,168,000 5,038,000 18,092,000 -6,668,000   954,000 -24,228,000 43,684,000 -14,214,000 10,772,000 -13,663,000 25,320,000 -19,597,000 28,757,000 -16,252,000 13,504,000 23,232,000 -14,385,000 19,935,000 -5,500,000 10,895,000 5,618,000         -12,877,000 -18,020,000   -13,103,000  -887,000 
          cash and cash equivalents-beginning of period
                                             58,852,000  83,710,000  67,696,000  -10,635,000 57,514,000  51,415,000  20,467,000  57,823,000  38,043,000  92,997,000  26,247,000 22,702,000 
          cash and cash equivalents-end of period
                                             12,168,000 5,038,000 76,944,000  -17,465,000 -1,679,000 84,664,000  43,684,000 -14,214,000 78,468,000  25,320,000 -30,232,000 86,271,000  13,504,000 23,232,000 37,030,000  -5,500,000 10,895,000 26,085,000  -8,384,000 -21,431,000 45,543,000  15,887,000 773,000 16,298,000  -18,020,000 -12,925,000 81,865,000  17,789,000 21,815,000 
          interest expense on preferred stock obligation
                                               430,000  462,000 450,000 480,000  497,000 477,000 492,000  493,000                          
          income in equity investments
                                                                                   
          financing costs for convertible debt securities
                                                                                  
          decrease in restricted cash and cash equivalents
                                                                                 
          cash and cash equivalents-beginning of year
                                                                                   
          cash and cash equivalents-end of year
                                                                                   
          common stock issued for convertible note conversions and make-whole settlements
                                                     1,126,000 27,860,000 17,200,000                            
          net decrease in cash and cash equivalents
                                                                     -8,384,000 -21,431,000 -12,280,000  15,887,000 773,000 -21,745,000    -11,132,000  -8,458,000  
          foreign exchange gains
                                                   -1,513,000                                
          loss in equity investments
                                                                            572,000 245,000 607,000 443,000 231,000 217,000 215,000 
          impairment of equity investment
                                                                                   
          amortization of convertible note discount and interest expense
                                                                                   
          accounts and license fee receivables
                                                                                   
          treasury notes matured
                                                            4,500,000 7,500,000 6,000,000 37,000,000 12,000,000 22,000,000 3,500,000 2,000,000 5,000,000    14,000,000 9,500,000 42,500,000 10,000,000 17,100,000 41,511,000 34,000,000 52,000,000 
          proceeds received for noncontrolling interest in subsidiary
                                                                                  
          income from equity investment
                                                                                   
          common stock issued for acquisition
                                                         3,562,000                        
          accounts receivable and license fee receivable
                                                       15,227,000  -10,994,000                          
          accretion of redeemable preferred stock of subsidiary
                                                                525,000  603,000 603,000 557,000            
          change in fair value of embedded derivatives
                                                                                   
          convertible loan to affiliate
                                                                     -600,000        
          treasury notes purchased
                                                                -11,023,000 -21,996,000 -3,997,000 -36,010,000 -9,596,000 -10,074,000     -5,129,000 -43,409,000 -6,195,000 -13,180,000 -40,537,000 -19,896,000 -36,081,000 
          loss from equity investment
                                                         -46,000  42,000 150,000 362,000  94,000 -143,000 198,000  183,000 245,000 148,000            
          proceeds received for sale of noncontrolling interest in subsidiary
                                                                                   
          common stock issued in settlement of prior year bonus obligation
                                                             550,000  707,000                
          amortization of bond premium and interest expense on preferred stock obligation
                                                           511,000                        
          asset impairment
                                                                                  
          amortization of bond premium and interest expense
                                                                706,000                   
          net proceeds from sale of common stock, net of registration fees
                                                                                   
          amortization of bond premium and interest expense on series 1 preferred
                                                             471,000 484,000 581,000                    
          adjustment for modification of redeemable preferred stock of subsidiary
                                                                                  
          accrued fees related to sale of common stock
                                                                   112,000                
          interest receivable on loan to affiliate
                                                                -50,000 -49,000 -43,000 -43,000 -44,000 -77,000 -34,000 -34,000 -34,000 -34,000 -39,000 -37,000 -40,000 -42,000 -43,000    
          loss on derivatives
                                                                41,000 18,000 50,000 28,000 89,000 -24,000 22,000 8,000            
          provision (recovery) for doubtful accounts
                                                                     12,000 28,000 12,000            
          provision for doubtful accounts
                                                                 -82,000 209,000 26,000        -5,000 34,000 -1,000 -20,000 -26,000 -33,000   
          proceeds from revolving line of credit
                                                                 -400,000 2,000,000 1,000,000                
          amortization of bond premium
                                                                  22,000 20,000 17,000 42,000 19,000 13,000 48,000 250,000 164,000 374,000       339,000 
          stock-based compensation
                                                                         1,131,000 1,102,000 1,451,000 1,298,000 1,345,000 1,632,000 1,254,000 1,228,000 1,302,000 1,115,000 
          redeemable minority interest
                                                                                   
          (recovery) provision for doubtful accounts
                                                                                   
          deferred revenue and customer deposits
                                                                            -4,786,000 7,408,000 -1,452,000 6,200,000 -990,000   
          capital expenditures for property and equipment
                                                                                   
          repayments of debt
                                                                                   
          net proceeds from sale of common stock
                                                                    -27,000    25,720,000 23,382,000 797,000 433,000 345,000 728,000 181,000 837,000 800,000 107,000  
          common stock issued for option and stock purchase plans
                                                                           54,000 212,000   210,000  287,000 
          effect on cash from changes in foreign currency rates
                                                                                   
          cash and cash equivalents at beginning of period
                                                                                   
          cash and cash equivalents at end of period
                                                                                   
          accounts payable and accounts payable due to affiliate
                                                                                   
          deferred revenue, royalty income and customer deposits
                                                                     -3,262,000 -3,570,000 10,707,000            
          common stock issued (repurchased) for stock plans and related expenses
                                                                                   
          noncash operating activity:
                                                                                   
          stock issued in settlement of prior year bonus obligation
                                                                                  
          common stock issued for option plans
                                                                          163,000 15,000    744,000  7,000  
          accrued sales of common stock
                                                                       109,000            
          loss from equity investments
                                                                         15,000 216,000 346,000        
          change in redeemable minority interest
                                                                         533,000          
          impairment of long-lived assets
                                                                               179,000    
          loss on derivative
                                                                         241,000          
          change in allowance for doubtful accounts
                                                                         -41,000          
          deferred revenue, license fee income and customer deposits
                                                                         61,000 -5,091,000 -2,321,000        
          treasury notes matured and sold
                                                                         5,000,000          
          effect of exchange rate changes on cash balances held in foreign currency
                                                                         -1,000          
          loss on redeemable minority interest
                                                                           493,000  473,000 473,000 438,000  391,000  
          gain on derivative
                                                                           -58,000    -45,000  -4,000  
          adjustments to reconcile net loss to net cash from
                                                                                   
          operating activities:
                                                                                   
          (gain) loss on derivatives
                                                                                   
          amortization
                                                                            260,000 246,000    -306,000  
          (increase) decrease in operating assets:
                                                                                   
          increase (decrease) in operating liabilities:
                                                                                   
          short term investments
                                                                                   
          long term investments
                                                                                   
          ending cash, cash equivalents and investment in u.s. treasuries
                                                                                   
          (gain) loss on derivative
                                                                             94,000      
          deferred license fee income and other
                                                                             600,000  -38,000 224,000 
          loan to affiliate
                                                                                   
          loss from discontinued operations
                                                                                   
          accretion of bond discount
                                                                                   
          repayment on long-term debt
                                                                                  -168,000 
          net proceeds from sale of preferred stock
                                                                                   
          interest receivable from loan to affiliate
                                                                                   
          adjustments to reconcile net income to net cash used in
                                                                                   
          benefit from doubtful accounts
                                                                                 72,000 -118,000 
          income from discontinued operations
                                                                                   
          net proceeds from issuance of preferred stock
                                                                                   
          operating activities, net of effects of acquisition:
                                                                                   
          purchased in process research and development
                                                                                   
          loss on disposal of assets
                                                                                   
          proceeds from sale of global thermoelectric, inc., net of transaction costs
                                                                                   
          cash acquired from acquisition of global thermoelectric, inc., net of transaction costs
                                                                                   
          net cash from discontinued operations