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Clean Energy Fuels Corp
(NASDAQ:CLNE) 

CLNE stock logo

Clean Energy Fuels Corp. provides natural gas as an alternative fuel for vehicle fleets and related fueling solutions, primarily in the United States and Canada. It supplies renewable natural gas (RNG), compressed natural gas (CNG), and liquefied natural gas (LNG) for light, medium, and heavy-duty v...

Founded: 2001
Full Time Employees: 412
Sector: Energy
Industry: Oil & Gas Refining & Marketing
EnergyNatural Gas
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At a glance:
Bull Thesis:
Bear Thesis:
Main Competitors:
Moat:
Income Statements:
Quarterly
Annual
    Unit: USD2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2020-12-31 2020-06-30 2020-03-31 
                        
      revenue:
    		                    
      product revenue
    		90,895,000 87,112,000 90,290,000 94,435,000 89,900,000 82,960,000 89,414,000 93,189,000 81,279,000 75,629,000 119,727,000 101,275,000 113,360,000 85,853,000 72,507,000 80,052,000 74,354,000  50,426,000 75,702,000 
      service revenue
    		15,242,000 15,501,000 13,474,000 14,891,000 14,976,000 14,994,000 14,295,000 13,668,000 14,292,000 14,919,000 12,456,000 12,481,000 12,327,000 11,371,000 10,990,000 11,876,000 11,741,000  9,448,000 10,304,000 
      total revenue
    		106,137,000 102,613,000 103,764,000 109,326,000 104,876,000 97,954,000 103,709,000 106,857,000 95,571,000 90,548,000 132,183,000 113,756,000 125,687,000 97,224,000 83,497,000 91,928,000 86,095,000  59,874,000 86,006,000 
      yoy
    		1.20% 4.76% 0.05% 2.31% 9.74% 8.18% -21.54% -6.06% -23.96% -6.87% 58.31% 23.74% 45.99%  39.45% 6.89%     
      qoq
    		3.43% -1.11% -5.09% 4.24% 7.07% -5.55% -2.95% 11.81% 5.55% -31.50% 16.20% -9.49% 29.28% 16.44% -9.17% 6.78%   -30.38%  
      operating expenses:
    		                    
      cost of sales
    		                    
      product cost of sales
    		69,229,000 65,193,000 67,846,000 65,421,000 63,867,000 53,914,000 66,425,000 69,246,000 65,427,000 55,570,000 119,658,000 76,490,000 79,710,000 65,933,000 57,615,000 55,244,000 48,254,000  33,054,000 46,673,000 
      service cost of sales
    		9,592,000 9,237,000 8,157,000 9,394,000 9,322,000 10,026,000 9,176,000 8,515,000 9,002,000 8,592,000 7,610,000 7,679,000 7,565,000 6,127,000 6,622,000 7,247,000 7,547,000  5,499,000 6,259,000 
      selling, general and administrative
    		26,270,000 27,453,000 27,464,000 28,390,000 28,865,000 28,342,000 26,237,000 24,951,000 29,117,000 28,548,000 29,649,000 28,547,000 26,501,000 26,481,000 27,927,000 24,556,000 22,303,000  16,892,000 18,259,000 
      depreciation and amortization
    		14,682,000 9,962,000 62,267,000 10,941,000 11,350,000 11,264,000 11,182,000 10,714,000 13,389,000 10,893,000 10,678,000 12,189,000 20,539,000 10,556,000 11,390,000 10,976,000 11,092,000  12,050,000 11,924,000 
      impairment of goodwill
    		  64,328,000                  
      total operating expenses
    		119,773,000 111,845,000 230,062,000 122,248,000 113,404,000 103,546,000 113,020,000 113,426,000 116,935,000 103,603,000 167,595,000 124,905,000 134,315,000 109,097,000 103,554,000 98,023,000 89,196,000  67,050,000 83,520,000 
      operating income
    		-13,636,000 -9,232,000 -126,298,000 -12,922,000 -8,528,000 -5,592,000 -9,311,000 -6,569,000 -21,364,000 -13,055,000 -35,412,000 -11,149,000 -8,628,000 -11,873,000 -20,057,000 -6,095,000 -3,101,000  -7,176,000 2,486,000 
      yoy
    		59.90% 65.09% 1256.44% 96.71% -60.08% -57.17% -73.71% -41.08% 147.61% 9.96% 76.56% 82.92% 178.23%  179.50% -345.17%     
      qoq
    		47.70% -92.69% 877.39% 51.52% 52.50% -39.94% 41.74% -69.25% 63.65% -63.13% 217.62% 29.22% -27.33% -40.80% 229.07% 96.55%   -388.66%  
      operating margin %
    		-12.85% -9.00% -121.72% -11.82% -8.13% -5.71% -8.98% -6.15% -22.35% -14.42% -26.79% -9.80% -6.86% -12.21% -24.02% -6.63% -3.60% NaN% -11.99% 2.89% 
      interest expense
    		-7,782,000 -7,735,000 -7,528,000 -8,139,000 -8,357,000 -7,921,000 -7,762,000 -10,312,000 -3,893,000 -4,365,000 -4,354,000 -1,829,000 -670,000 -732,000 -3,077,000 -954,000 -1,038,000  -1,841,000 -2,210,000 
      interest income
    		2,876,000 3,088,000 2,899,000 3,187,000 3,600,000 3,639,000 3,579,000 3,114,000 2,551,000 2,766,000 2,717,000 1,601,000 1,019,000 490,000 264,000 254,000 334,000  273,000 381,000 
      other income
    		2,138,000 73,000 8,000 13,000 35,000 -40,000 98,000 80,000 14,000 28,000 43,000 36,000 25,000 14,000 20,000 -1,000 62,000  2,287,000 175,000 
      loss from equity method investments
    		-7,524,000 -6,530,000 -7,044,000 -10,361,000 -5,022,000 -5,795,000 -5,398,000 -5,401,000 -3,304,000 -1,915,000 -1,890,000 -1,226,000 -728,000  -1,677,000 230,000 -355,000  -502,000  
      income before income taxes
    		-23,928,000 -20,336,000 -137,963,000 -28,222,000 -18,272,000 -15,709,000 -18,794,000 -19,088,000 -25,996,000 -16,541,000 -38,896,000 -12,567,000 -8,982,000 -13,294,000 -24,527,000 -2,681,000 -4,098,000  -6,959,000 977,000 
      income tax benefit
    		-75,000 -72,000 2,932,000 -2,062,000 -50,000 -758,000 178,000 257,000 47,000 55,000 64,000          
      net income
    		-24,003,000 -20,408,000 -135,031,000 -30,284,000 -18,322,000 -16,467,000 -18,616,000 -18,831,000 -25,949,000 -16,486,000 -38,832,000 -12,564,000 -9,088,000 -13,362,000 -24,576,000 -2,601,000 -4,158,000  -7,037,000 899,000 
      yoy
    		31.01% 23.93% 625.35% 60.82% -29.39% -0.12% -52.06% 49.88% 185.53% 23.38% 58.01% 383.04% 118.57%  249.24% -389.32%     
      qoq
    		17.62% -84.89% 345.88% 65.29% 11.26% -11.54% -1.14% -27.43% 57.40% -57.55% 209.07% 38.25% -31.99% -45.63% 844.87% -37.45%   -882.76%  
      net income margin %
    		-22.62% -19.89% -130.13% -27.70% -17.47% -16.81% -17.95% -17.62% -27.15% -18.21% -29.38% -11.04% -7.23% -13.74% -29.43% -2.83% -4.83% NaN% -11.75% 1.05% 
      loss attributable to noncontrolling interest
    		184,000 168,000 64,000 125,000 147,000 174,000 173,000 144,000 137,000 185,000 135,000 230,000 115,000 127,000 385,000 225,000 224,000  301,000 805,000 
      net loss attributable to clean energy fuels corp.
    		-23,819,000 -20,240,000 -134,967,000 -30,159,000 -18,175,000 -16,293,000 -18,443,000 -18,687,000 -25,812,000 -16,301,000 -38,697,000 -12,334,000 -8,973,000 -13,235,000 -24,191,000 -22,692,500 -3,934,000  -6,736,000  
      net loss attributable to clean energy fuels corp. per share:
    		                    
      basic and diluted
    		-0.11 -0.09 -0.6 -0.13 -0.08 -0.07 -0.08 -0.09 -0.12 -0.07 -0.17 -0.053 -0.04 -0.06  -0.108 -0.02  -0.03  
      weighted-average common shares outstanding:
    		                    
      basic and diluted
    		219,290,040 220,393,997 223,673,947 223,346,127 223,428,900 223,289,936 223,210,309  222,973,575 222,908,402 222,717,113  222,239,376 222,433,900   223,008,202  200,670,137  
      income tax expense
    		           -55,750 -106,000 -68,000 -49,000 80,000 -60,000  -78,000 -78,000 
      income from equity method investments
    		             -1,193,000      145,000 
      net loss attributable to clean energy fuels corp. per share:
    		                    
      basic
    		              -0.11      
      diluted
    		              -0.11      
      weighted-average common shares outstanding:
    		                    
      basic
    		       222,904,785    222,414,790   222,559,648 213,118,694  200,657,912  204,992,555 
      diluted
    		       222,904,785    222,414,790   222,559,648 213,118,694  200,657,912  206,040,099 
      change in fair value of derivative warrants
    		                  -445,000 405,000 
      net income attributable to clean energy fuels corp.
    		                   1,704,000 
      income per share:
    		                    
      basic
    		                   0.01 
      diluted
    		                   0.01 
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2020-12-31 2020-06-30 2020-03-31 
                          
        assets
      		                    
        current assets:
      		                    
        cash, cash equivalents and restricted cash
      		182,955,000 134,203,000                   
        short-term investments
      		51,319,000 108,669,000 108,060,000 127,970,000 126,570,000 126,212,000 159,486,000 158,186,000 149,325,000 138,569,000 55,113,000 139,569,000 110,989,000 130,018,000 120,565,000 129,722,000 120,190,000 29,528,000 16,529,000 29,830,000 
        accounts receivable
      		96,156,000 82,861,000 91,415,000 107,683,000 93,046,000 92,108,000 85,478,000 98,426,000 87,550,000 74,746,000 107,896,000 91,430,000 92,161,000 83,356,000 83,024,000 87,433,000 71,176,000 61,784,000 48,141,000 58,685,000 
        other receivables
      		7,880,000 8,637,000 15,314,000 14,630,000 29,653,000 25,041,000 21,817,000 19,770,000 36,509,000 27,088,000 20,078,000 17,026,000 35,112,000 4,750,000 11,447,000 24,447,000 12,901,000 23,655,000 17,363,000 81,722,000 
        inventory
      		44,421,000 45,373,000 45,720,000 43,434,000 45,833,000 49,406,000 48,977,000 45,335,000 40,472,000 38,517,000 38,045,000 37,144,000 35,927,000 34,931,000 32,322,000 31,302,000 29,332,000 28,100,000 29,503,000 29,725,000 
        notes receivable - related party
      		524,000 2,809,000 2,638,000 2,372,000                 
        prepaid expenses and other current assets
      		25,825,000 25,314,000 24,863,000 26,117,000 28,265,000 32,975,000 41,736,000 41,495,000 52,082,000 58,279,000 53,569,000 60,601,000 58,262,000 67,501,000 57,247,000 37,584,000 23,749,000 9,404,000 11,862,000 10,950,000 
        total current assets
      		409,080,000 407,866,000 408,689,000 413,768,000 442,370,000 450,884,000 448,906,000 470,175,000 393,037,000 392,361,000 441,508,000 471,720,000 355,574,000 378,051,000 412,575,000 409,936,000 397,756,000 263,039,000 205,430,000 284,221,000 
        operating lease right-of-use assets
      		87,233,000 86,620,000 87,780,000 90,598,000 93,051,000 99,673,000 90,408,000 92,324,000 74,868,000 63,093,000 60,573,000 52,586,000 45,144,000 42,389,000 42,604,000 42,537,000 33,959,000 25,967,000 27,254,000 27,951,000 
        land, property and equipment
      		326,495,000 325,225,000 318,627,000 365,319,000 354,449,000 340,278,000 335,772,000 331,758,000 305,988,000 292,463,000 274,136,000 264,068,000 248,902,000 253,583,000 256,509,000 261,761,000 271,540,000 290,911,000 306,179,000 315,892,000 
        notes receivable and other long-term assets
      		34,291,000 35,043,000 36,522,000 38,245,000 33,153,000 34,501,000 36,405,000 35,735,000 26,560,000 31,004,000 30,740,000 30,467,000 28,155,000 32,399,000 42,941,000 56,189,000 65,800,000 27,299,000 28,923,000 33,393,000 
        investments in other entities
      		262,503,000 255,589,000 259,474,000 265,268,000 250,712,000 250,257,000 253,953,000 258,773,000 193,807,000 196,770,000 191,981,000 193,273,000 193,428,000 157,588,000 108,274,000 109,811,000 76,953,000 27,962,000 25,246,000 24,896,000 
        goodwill
      		   64,328,000 64,328,000 64,328,000 64,328,000 64,328,000 64,328,000 64,328,000 64,328,000 64,328,000 64,328,000 64,328,000 64,328,000 64,328,000 64,328,000 64,328,000 64,328,000 64,328,000 
        intangible assets
      		5,500,000 5,500,000 5,500,000 6,365,000 6,365,000 6,365,000 6,365,000 6,365,000 6,365,000 6,365,000 6,365,000 5,915,000 5,915,000 5,915,000 5,500,000 5,500,000 24,000 464,000 795,000 1,002,000 
        total assets
      		1,125,102,000 1,115,843,000 1,116,592,000 1,243,891,000 1,244,428,000 1,246,286,000 1,236,137,000 1,259,458,000 1,064,953,000 1,046,384,000 1,069,631,000 1,082,357,000 941,446,000 934,253,000 932,731,000 957,070,000 917,451,000 715,027,000 669,037,000 764,445,000 
        liabilities and stockholders' equity
      		                    
        current liabilities:
      		                    
        current portion of debt
      		51,000 49,000 47,000 40,000 44,000 43,000 42,000 38,000 38,000 38,000 37,000 93,000 4,165,000 7,321,000 10,033,000 12,845,000 11,053,000 3,592,000 6,043,000 56,030,000 
        current portion of finance lease obligations
      		1,134,000 1,020,000 939,000 920,000 1,813,000 1,923,000 1,948,000 1,758,000 916,000 961,000 1,008,000 948,000 939,000 865,000 859,000 846,000 830,000 840,000 745,000 696,000 
        current portion of operating lease obligations
      		8,711,000 8,317,000 8,125,000 8,027,000 7,787,000 7,678,000 6,923,000 6,687,000 5,712,000 5,075,000 4,558,000 4,206,000 3,920,000 3,712,000 3,606,000 3,551,000 3,250,000 2,822,000 3,600,000 3,530,000 
        accounts payable
      		32,622,000 28,492,000 30,144,000 33,301,000 31,475,000 33,842,000 41,833,000 56,995,000 48,794,000 37,943,000 39,144,000 44,435,000 31,038,000 31,753,000 25,603,000 24,352,000 17,403,000 17,310,000 15,759,000 21,351,000 
        accrued liabilities
      		99,407,000 97,538,000 97,912,000 105,563,000 97,522,000 91,158,000 83,672,000 91,534,000 83,141,000 76,609,000 97,537,000 90,079,000 85,200,000 69,339,000 62,352,000 75,159,000 60,854,000 52,637,000 48,148,000 66,531,000 
        deferred revenue
      		10,423,000 8,836,000 7,823,000 6,871,000 5,842,000 7,794,000 7,787,000 4,936,000 3,523,000 4,920,000 6,099,000 5,970,000 4,927,000 5,926,000 8,052,000 7,251,000 2,034,000 2,642,000 4,890,000 7,839,000 
        total current liabilities
      		152,348,000 144,252,000 144,990,000 154,722,000 144,483,000 142,438,000 143,082,000 163,823,000 145,847,000 128,325,000 151,756,000 148,146,000 134,101,000 126,032,000 114,884,000 125,904,000 95,424,000 79,843,000 79,185,000 155,977,000 
        long-term portion of debt
      		284,242,000 277,874,000 271,578,000 265,327,000 264,032,000 262,912,000 261,926,000 261,123,000 144,913,000 144,837,000 144,877,000 145,471,000 24,390,000 25,089,000 25,615,000 23,215,000 25,900,000 82,088,000 30,499,000 31,558,000 
        long-term portion of finance lease obligations
      		2,015,000 1,827,000 1,674,000 1,766,000 1,353,000 1,534,000 1,368,000 1,839,000 1,808,000 2,024,000 2,231,000 2,134,000 2,223,000 2,133,000 2,278,000 2,427,000 2,536,000 2,552,000 2,908,000 2,909,000 
        long-term portion of operating lease obligations
      		85,402,000 84,737,000 85,953,000 89,049,000 90,976,000 96,962,000 87,498,000 89,065,000 71,341,000 59,393,000 56,843,000 48,911,000 41,682,000 39,062,000 39,299,000 39,431,000 31,067,000 23,698,000 24,361,000 25,184,000 
        other long-term liabilities
      		10,046,000 10,306,000 9,499,000 13,496,000 12,448,000 12,869,000 12,654,000 9,961,000 9,432,000 8,908,000 9,653,000 8,794,000 8,633,000 8,513,000 8,138,000 8,199,000 7,593,000 3,996,000 4,703,000 9,800,000 
        total liabilities
      		534,053,000 518,996,000 513,694,000 524,360,000 513,292,000 516,715,000 506,528,000 525,811,000 373,341,000 343,487,000 365,862,000 354,886,000 212,723,000 204,747,000 194,401,000 201,659,000 162,520,000 192,177,000 141,656,000 225,428,000 
        commitments and contingencies
      		                    
        stockholders’ equity:
      		                    
        preferred stock, 0.0001 par value. 1,000,000 shares authorized; no shares issued and outstanding
      		                    
        common stock
      		22,000 22,000 22,000 22,000 22,000 22,000 22,000 22,000 22,000 22,000 22,000 22,000 22,000 22,000 22,000 22,000 22,000 20,000 20,000 20,000 
        additional paid-in capital
      		1,779,955,000 1,760,813,000 1,748,540,000 1,730,090,000 1,709,622,000 1,690,762,000 1,673,792,000 1,658,339,000 1,598,634,000 1,582,009,000 1,568,093,000 1,553,668,000 1,543,511,000 1,533,118,000 1,527,164,000 1,519,918,000 1,516,452,000 1,191,791,000 1,193,197,000 1,198,802,000 
        accumulated deficit
      		-1,191,568,000 -1,167,749,000 -1,147,509,000 -1,012,542,000 -982,383,000 -964,208,000 -947,915,000 -929,472,000 -910,785,000 -884,973,000 -868,672,000 -829,975,000 -817,641,000 -808,668,000 -795,433,000 -771,242,000 -768,866,000 -678,096,000 -673,264,000 -666,528,000 
        accumulated other comprehensive loss
      		-3,202,000 -2,265,000 -4,349,000 -4,297,000 -2,508,000 -3,535,000 -2,994,000 -2,119,000 -3,280,000 -1,319,000 -3,017,000 -3,722,000 -4,877,000 -2,789,000 -1,373,000 -1,622,000 -1,237,000 -209,000 -2,475,000 -3,481,000 
        total clean energy fuels corp. stockholders’ equity
      		585,207,000 590,821,000 596,704,000 713,273,000 724,753,000 723,041,000 722,905,000 726,770,000 684,591,000 695,739,000 696,426,000 719,993,000 721,015,000 721,683,000 730,380,000 747,076,000 746,371,000 513,506,000 517,478,000 528,813,000 
        noncontrolling interest in subsidiary
      		5,842,000 6,026,000 6,194,000 6,258,000 6,383,000 6,530,000 6,704,000 6,877,000 7,021,000 7,158,000 7,343,000 7,478,000 7,708,000 7,823,000 7,950,000 8,335,000 8,560,000 9,344,000 9,903,000 10,204,000 
        total stockholders’ equity
      		591,049,000 596,847,000 602,898,000 719,531,000 731,136,000 729,571,000 729,609,000 733,647,000 691,612,000 702,897,000 703,769,000 727,471,000 728,723,000 729,506,000 738,330,000 755,411,000 754,931,000 522,850,000 527,381,000 539,017,000 
        total liabilities and stockholders’ equity
      		1,125,102,000 1,115,843,000 1,116,592,000 1,243,891,000 1,244,428,000 1,246,286,000 1,236,137,000 1,259,458,000 1,064,953,000 1,046,384,000 1,069,631,000 1,082,357,000 941,446,000 934,253,000 932,731,000 957,070,000 917,451,000 715,027,000 669,037,000 764,445,000 
        cash, cash equivalents and current portion of restricted cash
      		  120,679,000 91,562,000 119,003,000 125,142,000 91,412,000 106,963,000 27,099,000 55,162,000 166,807,000 125,950,000      108,977,000 79,171,000 69,526,000 
        derivative liabilities, related party
      		      877,000 1,875,000 3,723,000 2,779,000 3,373,000 2,415,000 3,912,000 7,116,000 4,379,000 1,900,000     
        long-term portion of derivative liabilities, related party
      		          502,000 1,430,000 1,694,000 3,918,000 4,187,000 2,483,000     
        long-term portion of restricted cash
      		                 11,000,000 4,000,000 4,000,000 
        cash and cash equivalents
      		            23,123,000 57,495,000 107,970,000 99,448,000 139,906,000    
        restricted cash
      		               7,008,000 7,006,000    
        derivative assets, related party
      		                502,000 1,591,000 2,861,000 3,783,000 
        long-term portion of derivative assets, related party
      		                85,000 4,057,000 6,882,000 8,762,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2020-06-30 2020-03-31 
                          
          cash flows from operating activities:
        		                  
          net loss
        		-24,003,000 -20,408,000 -135,031,000 -30,284,000 -18,322,000 -16,467,000 -18,616,000 -18,831,000 -25,949,000 -16,486,000 -38,832,000 -12,564,000 -9,088,000 -13,362,000 -24,576,000    
          adjustments to reconcile net loss to net cash from operating activities:
        		                  
          depreciation and amortization
        		14,682,000 9,962,000 62,267,000 10,941,000 11,350,000 11,264,000 11,182,000 10,714,000 13,389,000 10,893,000 10,678,000 12,189,000 20,539,000 10,556,000 11,390,000 10,976,000 12,050,000 11,924,000 
          provision for credit losses and inventory
        		2,088,000 796,000 195,000 1,247,000 807,000 354,000 274,000 287,000 480,000 504,000 502,000 429,000 600,000 631,000 375,000 302,000   
          stock-based compensation expense
        		2,193,000 2,403,000 1,777,000 2,449,000 2,863,000 2,862,000 2,629,000 5,056,000 6,091,000 6,093,000 6,096,000 5,788,000 5,964,000 6,468,000 8,253,000 4,774,000 760,000 1,054,000 
          stock-based sales incentive charges
        		16,776,000 17,396,000 17,338,000 18,022,000 15,766,000 14,079,000 12,897,000 16,136,000 16,821,000 13,922,000 13,730,000 8,802,000 6,967,000 4,777,000 3,756,000 3,404,000   
          change in fair value of derivative instruments
        		319,000 544,000 557,000 398,000 1,416,000 -61,000 -1,622,000 -146,000 1,372,000 -3,600,000 2,532,000 -2,123,000 -508,000 1,078,000 1,036,000 1,250,000 1,022,000 -5,227,000 
          gain on extinguishment of loan receivable and preferred stock equity security
        		                  
          amortization of debt financing costs
        		1,388,000                  
          amortization of discounts and section 30c tax credit
        		-1,136,000 -1,071,000 -1,214,000                
          loss on disposal of property and equipment
        		-81,000 -14,000 2,805,000 37,000 -66,000 433,000 64,000 997,000    -28,000 106,000 -34,000 -32,000 -306,000   
          impairment of goodwill
        		0 0 64,328,000                
          loss from equity method investments
        		7,524,000 6,530,000 7,044,000 10,361,000 5,022,000 5,795,000 5,398,000 5,401,000 3,304,000 1,915,000 1,890,000 1,226,000 728,000 1,193,000 1,677,000 -230,000 502,000 -145,000 
          non-cash lease expense
        		2,094,000 1,957,000 1,822,000 2,449,000 2,420,000 2,338,000 2,178,000 2,225,000 1,710,000 1,517,000 1,402,000 798,000 915,000 860,000 827,000 726,000   
          deferred income taxes
        		51,000 50,000 -2,955,000 2,069,000 27,000 735,000 -201,000 -280,000 -70,000 -79,000 -86,000 30,000 81,000 41,000 21,000 -22,000 30,000 30,000 
          accretion of aro liabilities
        		102,000 102,000 100,000  100,000 99,000 81,000            
          changes in operating assets and liabilities:
        		                  
          accounts and other receivables
        		-13,014,000 14,736,000 15,335,000 -7,250,000 -5,104,000 -8,397,000 12,574,000 -665,000 -23,564,000 36,222,000 -19,704,000 18,067,000 -38,163,000 6,149,000 12,875,000 -23,740,000 74,084,000 -180,000 
          inventory
        		-942,000 -808,000 -1,957,000 1,126,000 3,531,000 -749,000 -3,965,000 -5,382,000 -2,520,000 -863,000 -2,626,000 -1,717,000 -3,114,000 -2,678,000 -1,809,000 -2,449,000 167,000 51,000 
          prepaid expenses and other assets
        		499,000 -580,000 29,000 -3,607,000 4,041,000 6,334,000 -735,000 4,428,000 3,038,000 -7,996,000 1,040,000 -2,949,000 3,585,000 1,186,000 -3,188,000 -1,818,000 3,047,000 -2,682,000 
          operating lease liabilities
        		-1,648,000 -1,821,000 -2,002,000 -1,683,000 -1,427,000 -1,384,000 -1,593,000 -982,000 -900,000 -970,000 -1,105,000 -725,000 -842,000 -776,000 -971,000 -639,000 -753,000 -851,000 
          accounts payable
        		4,639,000 -1,370,000 -4,708,000 4,314,000 -5,822,000 -5,532,000 -11,744,000 10,566,000 10,555,000 -5,745,000 -606,000 3,387,000 -975,000 6,799,000 113,000 6,796,000 -4,978,000 -5,594,000 
          deferred revenue
        		1,575,000 994,000 933,000 1,162,000 -1,777,000 -12,000 2,832,000 1,413,000 -1,246,000 -1,179,000 129,000 1,043,000 -1,290,000 -1,835,000 801,000 5,217,000 -6,350,000 -2,437,000 
          accrued liabilities and other
        		2,040,000 5,179,000 -4,500,000 2,137,000 6,638,000 7,365,000 -8,095,000 7,844,000 6,479,000 -21,150,000 6,809,000 3,055,000 14,541,000 6,605,000 -7,930,000 9,053,000   
          net cash from operating activities
        		13,088,000 35,901,000 23,428,000 21,865,000 21,359,000 18,765,000 2,590,000 42,994,000 7,745,000 12,042,000 -19,004,000 35,003,000 -510,000 27,399,000 4,839,000 8,455,000 54,017,000 -4,258,000 
          capital expenditures
        		-6,620,000 -4,957,000 -7,490,000 -11,533,000 -21,317,000 -13,939,000 -18,208,000 -33,636,000 -24,544,000 -24,977,000 -17,777,000 -15,427,000 -11,644,000 -10,081,000 -7,366,000 -2,878,000 -2,696,000 -3,658,000 
          free cash flows
        		6,468,000 30,944,000 15,938,000 10,332,000 42,000 4,826,000 -15,618,000 9,358,000 -16,799,000 -12,935,000 -36,781,000 19,576,000 -12,154,000 17,318,000 -2,527,000 5,577,000 51,321,000 -7,916,000 
          cash flows from investing activities:
        		                  
          purchases of short-term investments
        		-166,755,000 -157,572,000 -363,240,000 -253,628,000 -251,683,000 -250,593,000 -158,306,000 -156,981,000 -147,999,000 -136,880,000 -49,393,000 -117,097,000 -98,577,000 -94,550,000 -99,803,000 -129,194,000 -16,009,000 -29,284,000 
          maturities and sales of short-term investments
        		225,213,000 158,000,000 384,325,000 253,624,000 252,683,000 285,265,000 159,072,000 149,885,000 138,903,000 55,000,000 135,500,000 89,400,000 117,989,000 85,250,000 109,000,000 119,690,000 29,350,000 56,500,000 
          payment and deposits on equipment and manure rights for adg rng production projects
        		-5,560,000 -9,751,000 -11,100,000 -7,272,000 -3,428,000 -3,451,000 -808,000 -2,639,000           
          purchases of and deposits on property and equipment
        		-6,620,000 -4,957,000 -7,490,000 -11,533,000 -21,317,000 -13,939,000 -18,208,000 -33,636,000 -24,544,000 -24,977,000 -17,777,000 -15,427,000 -11,644,000 -10,081,000 -7,366,000 -2,878,000 -2,696,000 -3,658,000 
          grant proceeds for capital projects
        		   0 0 300,000 652,000 0 0 0 1,947,000        
          proceeds received for joint development and construction of station projects
        		536,000 1,105,000 1,385,000 4,140,000 1,812,000 365,000 663,000 87,000 1,965,000          
          disbursements for loans receivable
        		-700,000 -900,000 -1,500,000 -3,000,000 -2,001,000 -1,897,000 -3,500,000 0 -1,160,000 -1,200,000 -1,140,000 -1,500,000 -294,000      
          proceeds from paydowns, maturities, and sales of loans receivable
        		3,483,000 21,000 19,000 20,000 18,000 19,000 253,000            
          investments in other entities
        		   -29,641,000 -3,086,000   -67,950,000 0   0 -38,100,000   -28,250,000   
          proceeds from settlement of insurance claims
        		   0 0 0 314,000 0           
          proceeds from disposal of property and equipment
        		89,000 10,000 4,998,000 163,000 371,000 24,000 18,000 32,000 32,000 149,000 49,000 231,000 49,000 37,000 43,000 624,000 2,539,000 685,000 
          net cash from investing activities
        		36,678,000 -14,044,000 7,397,000 -47,127,000 -26,631,000 15,928,000 -19,850,000 -105,281,000 -34,714,000 -122,540,000 60,522,000 -47,828,000 -30,315,000 -71,760,000 1,362,000 -45,856,000 13,124,000 30,440,000 
          cash flows from financing activities:
        		                  
          issuance of common stock
        		4,000 0 52,000 21,000 7,000 0 36,000 67,000 -160,000 3,000 332,000 48,000 744,000 300,000 273,000 281,000   
          repurchase of common stock
        		0 -7,547,000 -391,000         0 0 -3,121,000 -3,001,000  -6,406,000 -4,244,000 
          payment of tax withholdings on net settlement of equity awards
        		-1,000 0 -498,000 -36,000 0 0 -304,000            
          fees paid for lender and debt issuance costs
        		   37,000 -82,000 -270,000 -575,000 -7,752,000 -292,000 -1,071,000 -369,000        
          proceeds for adopt-a-port program
        		0   0 0 0 3,390,000 565,000 240,000 50,000 100,000 310,000 210,000 650,000 240,000 975,000   
          repayment of proceeds for adopt-a-port program
        		-473,000 -877,000 -831,000 -573,000 -569,000 -411,000 -381,000 -370,000 -366,000 -362,000 -343,000 -335,000 -303,000 -290,000 -235,000 -234,000   
          repayments of debt instruments and finance lease obligations
        		-297,000 -318,000 -256,000 -1,300,000 -309,000 -291,000 -334,000 -150,278,000 -258,000 -295,000 -317,000 -28,832,000 -3,852,000 -3,467,000 -13,848,000 -1,135,000 -51,260,000 -1,700,000 
          net cash from financing activities
        		-767,000 -8,277,000 -1,924,000 -1,851,000 -953,000 -972,000 1,832,000 142,149,000 -836,000 -1,420,000 -772,000 115,585,000 -3,201,000 -5,928,000 -4,807,000 -3,043,000 -57,625,000 -5,550,000 
          effect of exchange rates on cash, cash equivalents and restricted cash
        		-247,000 -56,000 216,000 -328,000 86,000 9,000 -123,000 2,000 -258,000 273,000 111,000 67,000 -346,000 -186,000 120,000 -12,000 129,000 -328,000 
          net increase in cash, cash equivalents and restricted cash
        		48,752,000 13,524,000 29,117,000 -27,441,000 -6,139,000 33,730,000 -15,551,000    40,857,000 102,827,000 -34,372,000 -50,475,000 1,514,000 -40,456,000 9,645,000 20,304,000 
          cash, cash equivalents and restricted cash, beginning of period
        		0 0 91,562,000 0 0 0 106,963,000 0 0 0 125,950,000 0 0 0 106,456,000 0 0 53,222,000 
          cash, cash equivalents and restricted cash, end of period
        		48,752,000 13,524,000 120,679,000 -27,441,000 -6,139,000 33,730,000 91,412,000 79,864,000 -28,063,000 -111,645,000 166,807,000 102,827,000 -34,372,000 -50,475,000 107,970,000 -40,456,000 9,645,000 73,526,000 
          supplemental disclosure of cash flow information:
        		                  
          income taxes paid
        		16,000 20,000 2,000 -5,000 17,000 35,000 13,000 20,000 0 31,000 26,000 18,000 0   3,000 36,000 29,000 
          interest paid, net of 1,229 and 3,247 capitalized, respectively
        		                  
          supplemental disclosure of non-cash financing activity:
        		                  
          interest paid-in-kind
        		-25,000,000 5,000,000 5,000,000                
          interest paid, net of 1,229 and 2,003 capitalized, respectively
        		                  
          amortization of debt issuance costs
        		  1,265,000                
          interest paid, net of 661 and 954 capitalized, respectively
        		  1,262,000                
          loss on extinguishment of debt
        		           1,145,000 0 0 2,268,000 14,000   
          asset impairments and other charges
        		       79,000 73,000 73,000 409,000        
          impairment of investments in equity securities
        		                  
          cash received from sale of certain assets of subsidiary
        		           0 0 0 3,885,000 0 -677,000 5,628,000 
          advance to dr jv
        		       0 0          
          proceeds from repayment of advance by dr jv
        		                  
          proceeds from debt instruments
        		       300,000,000 0   145,883,000 0 0 14,000,000 0 0 200,000 
          proceeds from revolving line of credit
        		               0   
          repayments of borrowing under revolving line of credit
        		               0   
          payments of debt extinguishment costs
        		           -1,053,000 0 0 -2,186,000 0   
          interest paid, net of 0, 2,587 and 2,057 capitalized, respectively
        		                  
          amortization of discount, debt issuance cost and section 30c tax credit
        		    -104,000              
          interest paid, net of 1,673 and 1,460 capitalized, respectively
        		                  
          interest paid, net of 581 and 1,229 capitalized, respectively
        		                  
          amortization of discount and debt issuance cost
        		      -948,000 -1,233,000 -1,285,000 -977,000 -1,213,000 -850,000 -556,000 -259,000 -47,000 -7,000 -18,000 -85,000 
          interest paid, net of 138 and 661 capitalized, respectively
        		      6,472,000            
          gain from sale of certain assets of subsidiary
        		                0 -176,000 
          expense reimbursement from jv
        		                  
          fees paid for issuance of common stock
        		               0   
          interest paid, net of 0, 0 and 2,587 capitalized, respectively
        		                  
          proceeds from paydowns, maturities, and sales of loans receivables
        		        223,000 129,000 1,483,000        
          payments of tax withholdings on net settlement of equity awards
        		        0 0 -175,000        
          net decrease in cash, cash equivalents and restricted cash
        		                  
          interest paid, net of 0 and 1,673 capitalized, respectively
        		                  
          gain on disposal of property and equipment
        		         -52,000 -49,000      -2,284,000 -14,000 
          payment and deposits on equipment and manure rights for rng production projects
        		         -4,933,000 -10,147,000 -4,071,000 0 -415,000 -4,500,000    
          net (decrease) in cash, cash equivalents and restricted cash
        		                  
          interest paid, net of 0 and 581 capitalized, respectively
        		                  
          interest paid, net of 0 and 138 capitalized, respectively
        		          4,106,000        
          gain from formation of equity method investment
        		                  
          payments on and proceeds from sales of loans receivable
        		           636,000 262,000 115,000 103,000 59,000 617,000 609,000 
          fees paid for debt issuance costs
        		           -436,000 0 0 -50,000 -14,000   
          interest paid, net of 57, 0 and 0 capitalized, respectively
        		                  
          interest paid, net of 0 and 0 capitalized, respectively
        		            450,000 453,000 470,000    
          net income
        		                 899,000 
          adjustments to reconcile net income to net cash from operating activities:
        		                  
          disbursements for loans receivable for rng production projects
        		                  
          interest paid, net of 441, 57 and 0 capitalized, respectively
        		                  
          interest paid, net of 57 and 0 capitalized, respectively
        		                  
          loss from formation of equity method investment
        		                  
          interest paid, net of 244, 441 and 57 capitalized, respectively
        		                  
          accrued expenses and other
        		                -17,812,000 -1,667,000 
          loans made to customers
        		                0 -40,000 
          issuances of common stock
        		                41,000 194,000 
          interest paid, net of 178 and 57 capitalized, respectively
        		                  
          provision for doubtful accounts, notes and inventory
        		                 166,000 
          right-of-use asset amortization
        		                 676,000 
          fees paid for issuances of common stock and debt issuance costs
        		                  
          interest paid, net of 80 and 98 capitalized, respectively
        		                 2,104,000