7Baggers

Stem, Inc
(NYSE:STEM) 

STEM stock logo

Stem delivers and operates smart battery storage solutions that maximize renewable energy generation and help build a cleaner, more resilient grid. Our customers include Fortune 500 corporate energy users, project developers and installers, and utilities and independent power producers.

Founded: 2009
CEO: John Carrington  
Sector: None
Industry: None

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• Market Cap:
• Exchange:
• Shs Outstanding:
• Employees:
• Beta:
• Return on Equity (ROE) ttm:
• Return on Assets (ROA) ttm:
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At a glance:
Bull Thesis:
Bear Thesis:
Main Competitors:
Moat:
Income Statements:
Quarterly
Annual
    Unit: USD2025-12-31 2025-09-30 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 2021-06-30 2021-03-31 
                        
      revenue
                        
      yoy
                        
      qoq
                        
      services and other revenue
    30,714,000 18,409,000  17,721,000 15,724,000 22,143,000 15,103,000 14,840,000 14,918,000 16,597,000 16,360,000 14,673,000 15,965,000 13,692,000       
      hardware revenue
    16,429,000 19,828,000  14,791,000 40,101,000 7,148,000 18,896,000 10,629,000 152,506,000 117,143,000 76,586,000 52,732,000 139,479,000 85,809,000 54,426,000 31,123,000 47,299,000 34,886,000 14,184,000  
      total revenue
    47,143,000 38,237,000 38,374,000 32,512,000 55,825,000 29,291,000 33,999,000 25,469,000 167,424,000 133,740,000 92,946,000 67,405,000 155,444,000 99,501,000 66,947,000 41,088,000 52,780,000 39,833,000 19,337,000  
      cost of revenue
                        
      cost of services and other
    15,012,000 11,975,000 14,262,000                  
      cost of hardware
    9,093,000 12,682,000 11,312,000                  
      total cost of revenue
    24,105,000 24,657,000 25,574,000 21,974,000 58,263,000 23,095,000 24,624,000 49,660,000 156,333,000 154,031,000 81,075,000 66,411,000 142,911,000 90,374,000 59,159,000 37,444,000 54,427,000 36,696,000 19,464,000  
      gross profit
    23,038,000 13,580,000 12,800,000 10,538,000 -2,438,000 6,196,000 9,375,000 -24,191,000 11,091,000 -20,291,000 11,871,000          
      yoy
    -1044.95% 119.17% 36.53% -143.56% -121.98% -130.54% -21.03%              
      qoq
    69.65% 6.09% 21.47% -532.24% -139.35% -33.91% -138.75% -318.11% -154.66% -270.93%           
      gross margin %
    Infinity% Infinity% Infinity% Infinity% -Infinity% Infinity% Infinity% -Infinity% Infinity% -Infinity% Infinity% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% 
      operating expenses:
                        
      sales and marketing
    7,696,000 6,979,000 7,250,000 6,792,000 7,473,000 8,216,000 10,944,000 11,126,000 13,865,000 11,605,000 13,680,000 12,406,000 13,598,000 13,187,000 12,955,000 9,142,000 8,395,000 4,975,000 3,913,000  
      research and development
    7,058,000 6,916,000 9,993,000 11,328,000 10,779,000 11,086,000 15,281,000 14,136,000 14,488,000 14,420,000 14,156,000 13,444,000 9,871,000 10,526,000 8,963,000 8,943,000 7,221,000 6,268,000 4,827,000  
      general and administrative
    16,630,000 12,536,000 8,900,000 13,566,000 26,453,000 27,212,000 15,846,000 18,560,000 16,259,000 21,955,000 18,904,000 17,797,000 22,810,000 18,013,000 15,693,000 20,512,000 12,918,000 11,024,000 15,014,000  
      impairment of parent company guarantees
         104,134,000               
      impairment of goodwill
          547,152,000              
      total operating expenses
    31,384,000 26,431,000 26,143,000 31,686,000 44,705,000 150,648,000 589,223,000 43,822,000 44,612,000 47,980,000 46,740,000 43,647,000 46,279,000 41,726,000 37,611,000 38,597,000 28,534,000 22,267,000 23,754,000 600,686 
      income from operations
    -8,346,000 -12,851,000 -13,343,000 -21,148,000 -47,143,000 -144,452,000 -579,848,000 -68,013,000 -33,521,000 -68,271,000 -34,869,000 -42,653,000 -33,746,000 -32,599,000 -29,823,000 -34,953,000 -30,181,000 -19,130,000 -23,881,000  
      yoy
    -82.30% -91.10% -97.70% -68.91% 40.64% 111.59% 1562.93% 59.46% -0.67% 109.43% 16.92% 22.03% 11.81% 70.41% 24.88%      
      qoq
    -35.06% -3.69% -36.91% -55.14% -67.36% -75.09% 752.55% 102.90% -50.90% 95.79% -18.25% 26.39% 3.52% 9.31% -14.68% 15.81% 57.77% -19.89%   
      operating margin %
    -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% NaN% 
      other income, net:
                        
      interest expense
    -8,301,000 -7,270,000 -4,072,000 -4,290,000 -4,443,000 -4,512,000 -4,631,000 -4,707,000 -4,892,000 -4,405,000 -3,903,000 -1,777,000 -2,039,000 -2,520,000 -2,691,000 -3,218,000 -4,560,000 -2,674,000 -3,929,000  
      gain on extinguishment of debt
      220,047,000        59,121,000          
      change in fair value of derivative liability
          1,477,000   -5,155,000           
      change in fair value of warrant liability
    968,000 -4,190,000                   
      other income
    -156,000 379,000 374,000 496,000 437,000 793,000 794,000 566,000 807,000 713,000 -736,000 -439,000 552,000 863,000       
      total other income
    -7,489,000 -11,081,000 216,349,000  -4,006,000 -3,719,000 -2,360,000  -4,085,000 -8,847,000 54,482,000  -1,651,750 -1,657,000   -3,873,000 134,742,000 -76,335,000  
      income before provision for income taxes
    -15,835,000 -23,932,000 203,006,000 -24,942,000   -582,208,000              
      benefit from income taxes
    -98,000 141,000   12,000 -129,000  -153,000 -79,000 46,000 -491,000 91,000 -40,000 -19,000       
      net income
    -15,979,000 -23,791,000 202,531,000 -25,000,000 -51,137,000 -148,300,000 -582,270,000 -72,307,000 -37,685,000 -77,072,000 19,122,000 -44,778,000 -35,273,000 -34,275,000 -32,023,000 -22,483,000 -34,054,000 115,612,000 -100,216,000 -156,346,958 
      yoy
    -68.75% -83.96% -134.78% -65.43% 35.70% 92.42% -3145.03% 61.48% 6.84% 124.86% -159.71% 99.16% 3.58% -129.65% -68.05% -85.62%     
      qoq
    -32.84% -111.75% -910.12% -51.11% -65.52% -74.53% 705.27% 91.87% -51.10% -503.05% -142.70% 26.95% 2.91% 7.03% 42.43% -33.98% -129.46% -215.36% -35.90%  
      net income margin %
    -Infinity% -Infinity% Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity% Infinity% -Infinity% -Infinity% 
      net income per share
    -2 -2.84 24.31 -0.15 -0.3 -0.91 -3.59 -0.46 -0.24 -0.49 0.12 -0.29 -0.23 -0.22 -0.21 -0.15 -0.23 0.85 -1  
      numerator used to compute net income per share:
                        
      net income attributable to stem common stockholders, basic
    38,435 -23,791 202,531    -582,270    19,122          
      net loss attributable to stem common stockholders, diluted
    -15,979 -23,791 -15,160    -582,270    -40,011          
      weighted-average shares used for eps calculation
    8,338,759 8,376,032 8,330,679 163,889,801 161,442,542 162,633,996 162,158,936 158,180,137 155,583,957 155,829,348 155,619,179 154,966,163 153,413,743 154,392,573 154,125,061 150,491,041 105,561,139 135,231,146 100,611,965  
      solar software
      9,521,000                  
      edge hardware
      12,086,000                  
      project and professional services
      2,330,000                  
      storage software & managed services
      9,003,000                  
      battery hardware resale
      5,434,000                  
      provision for income taxes
      -475,000 -58,000   -62,000              
      cost of services and other revenue
       11,413,000 15,768,000 15,687,000 10,955,000 9,984,000 13,354,000 13,684,000 11,756,000 11,504,000 12,934,000 11,445,000       
      cost of hardware revenue
       10,561,000 42,495,000 7,408,000 13,669,000 39,676,000 142,979,000 140,347,000 69,319,000 54,907,000 129,977,000 78,929,000 49,018,000 28,811,000 45,604,000 30,057,000 13,655,000  
      other expense, net:
                        
      total other expense
       -3,794,000    -4,141,000    -2,216,000   -2,207,000 -2,743,000     
      loss before benefit from income taxes
        -51,149,000 -148,171,000  -72,154,000 -37,606,000 -77,118,000  -44,869,000         
      net income attributed to non-controlling interests
                 4,000       
      net loss attributable to stem
            -25,682,000 -77,072,000     -32,019,000      
      income before benefit from income taxes
              19,613,000  -25,995,500 -34,256,000       
      net loss attributed to non-controlling interests
                  -4,000      
      net income attributable to stem
              19,122,000  -22,195,250 -34,279,000       
      gross margin
               994,000 12,533,000 9,127,000 7,788,000 3,644,000 -1,647,000 3,137,000 -127,000  
      loss on extinguishment of debt
                      -5,064,000  
      change in fair value of warrants and embedded derivatives
                        
      services revenue
                  12,521,000 9,965,000 3,745,500 4,947,000 5,153,000  
      cost of service revenue
                  10,141,000 8,633,000 8,823,000 6,639,000 5,809,000  
      change in fair value of warrants and embedded derivative
                     137,001,000 -67,179,000  
      other income (expenses)
                  484,000 475,000 52,750 415,000 -163,000  
      income before income taxes
                  -32,030,000 -37,696,000 -34,054,000 115,612,000 -100,216,000  
      income tax benefit
                  7,000 15,213,000     
      income tax expense
                        
      operating expenses
                        
      general and administrative expenses
                       521,271 
      general and administrative expenses - related party
                       30,000 
      franchise tax expense
                       49,415 
      other income:
                        
      change in fair value of warrant liabilities
                       -155,781,741 
      net gain from investments held in trust account
                       35,469 
      total other
                       -155,746,272 
      weighted-average class a common stock outstanding, basic and diluted
                       38,358,504 
      basic and diluted net income per class a common stock
                        
      weighted-average class b common stock outstanding, basic and diluted
                       9,589,626 
      basic and diluted net loss per class b common stock
                       -16.3 
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2025-12-31 2025-09-30 2025-06-30 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 2021-06-30 2021-03-31 2020-12-31 2020-09-30 
                           
        assets
                           
        current assets:
                           
        cash and cash equivalents
      48,915,000 43,121,000 40,790,000 56,299,000 75,364,000 89,649,000 112,804,000 105,375,000 97,064,000 75,405,000 117,883,000 87,903,000 100,098,000 151,003,000 174,537,000 747,780,000 405,189,000 474,138,000    
        accounts receivable
      38,353,000 35,836,000 42,843,000 59,316,000 92,659,000 206,351,000 239,934,000 302,848,000 288,674,000 293,853,000 232,764,000 223,219,000 144,259,000 95,855,000 74,123,000 61,701,000 34,997,000 17,833,000    
        inventory
      4,587,000 5,165,000 4,599,000 10,920,000 33,950,000 33,213,000 24,444,000 26,665,000 65,656,000 145,523,000 43,231,000 8,374,000 29,217,000 63,055,000 72,985,000 22,720,000 24,200,000 27,167,000    
        other current assets
      8,236,000 9,634,000 10,993,000 9,458,000 10,320,000 10,582,000 8,221,000 9,303,000 10,520,000 13,139,000 6,975,000 8,026,000 8,668,000 47,927,000 28,252,000 18,641,000 16,496,000 19,199,000    
        total current assets
      100,091,000 93,756,000 99,225,000 136,617,000 227,530,000 359,920,000 405,528,000 472,965,000 510,513,000 612,808,000 511,125,000 532,755,000 537,225,000 541,730,000 527,170,000 1,023,850,000 651,677,000 538,337,000 1,012,323 1,564,337 2,575,989 
        energy storage systems
      43,925,000 47,894,000 50,962,000 58,820,000 63,663,000 67,518,000 71,234,000 74,418,000 80,709,000 84,627,000 87,750,000 90,757,000 94,828,000 98,427,000 102,320,000 106,114,000 114,149,000 118,216,000    
        contract origination costs
      7,466,000 8,663,000 8,805,000 9,681,000 9,746,000 9,921,000 10,515,000 11,119,000 11,930,000 12,412,000 11,662,000 11,697,000 9,757,000 9,321,000 9,620,000 8,630,000 11,665,000 11,668,000    
        intangible assets
      123,028,000 129,169,000 135,158,000 143,912,000 148,183,000 152,144,000 155,008,000 157,146,000 158,321,000 159,472,000 161,596,000 162,265,000 163,553,000 164,796,000 165,840,000 13,966,000 13,125,000 12,387,000    
        operating lease right-of-use assets
      9,571,000 10,147,000 11,258,000 12,574,000 12,065,000 11,138,000 11,475,000 12,255,000 13,023,000 13,810,000 14,553,000 12,431,000 12,609,000 13,200,000        
        other noncurrent assets
      24,806,000 72,978,000 73,808,000 75,755,000 76,648,000 90,902,000 83,966,000 81,869,000 77,132,000 73,157,000 60,316,000 65,339,000 52,618,000 52,496,000 51,380,000 24,531,000 18,716,000 15,945,000    
        total assets
      308,887,000 362,607,000 379,216,000 437,359,000 537,835,000 691,543,000 1,284,895,000 1,356,977,000 1,398,792,000 1,503,490,000 1,394,170,000 1,421,893,000 1,417,224,000 1,426,702,000 1,417,815,000 1,191,830,000 824,967,000 698,339,000 384,598,056 385,286,084 386,179,543 
        liabilities and stockholders’ equity
                           
        current liabilities:
                           
        accounts payable
      10,310,000 10,986,000 11,430,000 30,147,000 47,363,000 63,103,000 61,746,000 78,277,000 85,444,000 102,980,000 112,541,000 83,831,000 94,923,000 113,180,000 99,307,000 28,273,000 14,962,000 17,798,000 21,152 93,965 445,093 
        accrued liabilities
      26,875,000 29,913,000 30,422,000 25,770,000 57,648,000 63,362,000 78,487,000 76,873,000 60,615,000 55,530,000 59,104,000 85,258,000 61,601,000 33,057,000 22,785,000 25,993,000 14,024,000 9,177,000    
        accrued payroll
      9,131,000 8,389,000 6,257,000 6,678,000 10,265,000 10,719,000 11,188,000 14,372,000 10,439,000 7,965,000 7,025,000 12,466,000 13,268,000 10,132,000 8,422,000 7,453,000 5,524,000 4,565,000    
        financing obligation, current portion
      13,792,000 14,181,000 14,983,000 16,521,000 15,037,000 15,139,000 15,390,000 14,835,000 17,381,000 18,158,000 16,271,000 15,720,000 17,024,000 14,784,000 14,177,000 15,277,000      
        deferred revenue, current portion
      43,625,000 43,104,000 42,089,000 43,255,000 70,766,000 57,974,000 56,952,000 53,997,000 82,676,000 115,381,000 75,421,000 64,311,000 49,436,000 49,692,000 40,722,000 9,158,000      
        other current liabilities
      6,832,000 6,988,000 6,877,000 6,429,000 5,905,000 6,349,000 12,855,000 12,726,000 12,689,000 7,479,000 5,547,000 5,412,000 4,225,000 4,415,000 2,622,000 1,813,000 2,465,000 1,910,000    
        total current liabilities
      110,565,000 113,561,000 112,058,000 128,800,000 206,984,000 216,646,000 236,618,000 251,080,000 269,244,000 307,493,000 275,909,000 266,998,000 240,477,000 225,260,000 188,035,000 87,967,000 78,419,000 85,842,000 2,686,624 2,809,435 716,028 
        deferred revenue, noncurrent
      85,251,000 85,817,000 84,273,000 85,900,000 86,799,000 88,944,000 88,410,000 88,650,000 83,028,000 78,736,000 72,574,000 73,763,000 69,254,000 65,849,000 64,051,000 28,285,000 21,743,000 18,648,000    
        asset retirement obligation
      4,349,000 4,314,000 4,256,000 4,203,000 4,150,000 4,122,000 4,073,000 4,052,000 4,085,000 4,079,000 4,223,000 4,262,000 4,261,000 4,217,000 4,168,000 4,135,000 4,149,000 4,178,000    
        convertible notes, noncurrent
      183,594,000 183,389,000 183,186,000 525,922,000 525,345,000 524,771,000 524,200,000 523,633,000 523,068,000 522,506,000 448,397,000 447,909,000 447,411,000 446,914,000 446,418,000 316,542,000      
        senior secured notes, noncurrent
      128,796,000 127,609,000 126,709,000                   
        financing obligation, noncurrent
      29,590,000 31,091,000 33,369,000 41,627,000 44,662,000 47,366,000 49,222,000 52,010,000 54,314,000 58,895,000 61,065,000 63,867,000 65,314,000 67,102,000 70,395,000 73,204,000 75,384,000 74,496,000    
        warrant liabilities
      5,121,000  1,899,000               303,798,000 276,873,719   
        lease liabilities, noncurrent
      9,860,000 10,653,000 11,644,000 13,336,000 12,807,000 11,832,000 9,885,000 10,455,000 11,145,000 11,874,000 12,634,000 10,962,000 11,308,000 11,921,000        
        other liabilities
      820,000 35,193,000 35,301,000 35,404,000 643,000 599,000 436,000 416,000 565,000 563,000 444,000 362,000 391,000 339,000 367,000       
        total liabilities
      557,946,000 597,716,000 592,695,000 835,192,000 881,390,000 894,280,000 912,844,000 930,296,000 945,449,000 984,146,000 876,925,000 869,726,000 839,999,000 823,275,000 787,679,000 524,003,000 194,048,000 489,561,000 293,189,729 16,438,821 14,345,414 
        commitments and contingencies
                           
        stockholders’ deficit:
                           
        preferred stock, 0.0001 par value...
                           
        common stock, 0.0001 par value...
      1,000 1,000 1,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 15,000 15,000 15,000 15,000 14,000 14,000 13,000    
        additional paid-in capital
      1,239,263,000 1,236,905,000 1,234,571,000 1,228,042,000 1,230,957,000 1,223,739,000 1,216,197,000 1,198,716,000 1,187,628,000 1,176,678,000 1,193,621,000 1,185,364,000 1,175,733,000 1,166,865,000 1,161,109,000 1,176,845,000 1,106,220,000 799,918,000 273,994,882 8,380,865 5,394,034 
        accumulated other comprehensive income
      41,000 175,000 348,000 76,000 302,000 94,000 154,000  23,000   -1,672,000 -2,122,000 -1,136,000 -619,000 20,000      
        accumulated deficit
      -1,488,747,000 -1,472,768,000 -1,448,977,000 -1,626,508,000 -1,575,371,000 -1,427,071,000 -844,801,000 -772,494,000 -734,809,000 -657,737,000 -676,859,000 -632,081,000 -596,808,000 -562,529,000 -530,510,000 -509,052,000 -474,998,000 -590,610,000 -268,998,806 -3,382,018 -395,152 
        total stem's stockholders’ deficit
      -249,442,000                     
        non-controlling interests
      383,000 578,000 578,000 541,000 541,000 485,000 485,000 485,000 485,000 475,000 469,000 541,000 407,000 212,000 141,000       
        total stockholders’ deficit
      -249,059,000 -235,109,000 -213,479,000                   
        total liabilities and stockholders’ deficit
      308,887,000 362,607,000 379,216,000                   
        liabilities and stockholders’ deficit
                           
        warrant liability
       6,089,000                    
        total stem stockholders’ deficit
       -235,687,000                    
        total stem’s stockholders’ deficit
        -214,057,000                   
        short-term investments
             8,219,000 28,301,000 62,769,000 87,678,000 162,074,000 193,403,000 183,890,000 177,273,000 173,008,000 170,795,000     
        deferred costs with suppliers
         624,000 15,237,000 20,125,000 20,125,000 20,555,000 20,298,000 22,119,000 22,594,000 43,159,000 61,580,000         
        goodwill
            547,169,000 547,205,000 547,164,000 547,204,000 547,168,000 546,649,000 546,634,000 546,732,000 547,700,000 1,741,000 1,741,000 1,786,000    
        stockholders’ equity
                           
        total stem's stockholders’ equity
         -398,374,000    426,196,000    551,626,000          
        total stockholders’ equity
         -397,833,000 -343,555,000 -202,737,000 372,051,000 426,681,000 453,343,000 519,344,000 517,245,000 552,167,000 577,225,000 603,427,000 630,136,000 667,827,000 630,919,000 208,778,000  5,000,003  
        total liabilities and stockholders’ equity
         437,359,000 537,835,000 691,543,000 1,284,895,000 1,356,977,000 1,398,792,000 1,503,490,000 1,394,170,000 1,421,893,000 1,417,224,000 1,426,702,000 1,417,815,000 1,191,830,000 824,967,000 698,339,000  385,286,084  
        total stem’s stockholders’ equity
          -344,096,000 -203,222,000 371,566,000  452,858,000 518,869,000 516,776,000  576,818,000         
        stockholders’ equity:
                           
        notes payable, noncurrent
                1,679,000 1,603,000 1,583,000 1,673,000 1,719,000 1,687,000 1,675,000 1,719,000    
        accumulated other comprehensive loss
             -42,000  -88,000 -2,000      -317,000 -543,000    
        total stem's stockholders' equity
                   603,215,000 629,995,000       
        operating leases right-of-use assets
                    13,785,000 12,998,000 13,894,000     
        lease liability, noncurrent
                    12,526,000 12,183,000 12,678,000 880,000    
        notes payable, current portion
                           
        convertible promissory notes
                           
        financing obligation, current
                      14,315,000 15,336,000    
        deferred revenue, current
                      27,129,000 37,056,000    
        assets:
                           
        cash
                        426,064 936,773 1,840,514 
        prepaid expenses
                        586,259 627,564 735,475 
        investments held in trust account
                        383,585,733 383,721,747 383,603,554 
        liabilities and stockholders' equity:
                           
        accounts payable - related party
                           
        accrued expenses
                        2,616,157 2,467,064 121,296 
        franchise tax payable
                        49,315 198,406 149,639 
        deferred legal fees
                        203,910 203,910 203,910 
        deferred underwriting commissions in connection with the initial public offering
                        13,425,476 13,425,476 13,425,476 
        class a common stock, 0.0001 par value...
                        86,408,320 363,847,260 366,834,120 
        stockholders' equity:
                           
        preferred stock, 0.0001 par value; 1,000,000 shares authorized; none issued and outstanding
                           
        class b common stock, 0.0001 par value...
                        959 959 959 
        total stockholders' equity
                        5,000,007  5,000,009 
        total liabilities and stockholders' equity
                        384,598,056  386,179,543 
        deferred offering costs associated with initial public offering
                           
        liabilities and stockholders’ equity:
                           
        accounts payable – related party
                         50,000  
        note payable
                           
        commitments
                           
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2025-12-31 2025-09-30 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 
                          
          operating activities
                          
          net income
        -15,979,000 -23,791,000                 
          adjustments to reconcile net income to net cash from operating activities:
                          
          depreciation and amortization expense
        11,847,000 10,858,000 11,246,000 10,996,000 11,761,000 11,010,000 11,408,000 10,809,000 12,682,000 11,217,000 11,269,000 11,107,000 13,374,000 11,173,000 12,162,000 8,725,000 8,853,000 5,305,000 
          non-cash interest expense, including interest expenses associated with debt issuance costs
        789,000 541,000 -79,000 289,000 522,000 581,000 562,000 422,000 633,000 383,000 1,200,000 386,000 422,000 577,000 446,000 456,000 1,550,000 979,000 
          stock-based compensation
        2,287,000 2,217,000 1,395,000 4,317,000 -3,245,000 6,532,000 6,810,000 8,374,000 16,789,000 11,198,000 9,920,000 7,202,000 8,251,000 7,678,000 6,467,000 6,265,000 5,563,000 6,199,000 
          change in fair value of derivative liability
              5,155,000         
          change in fair value of warrant liability
        -968,000                  
          non-cash lease expense
        594,000 696,000 683,000 679,000 772,000 718,000 756,000 777,000 766,000 756,000 745,000 661,000       
          accretion of asset retirement obligations
        59,000 59,000 59,000 60,000 59,000 59,000 59,000 59,000 56,000 58,000 59,000 61,000       
          impairment of inventory
                          
          impairment of deferred costs with suppliers
                          
          impairment of energy storage systems
                     374,000 748,000 171,000 2,120,000 925,000 
          loss on disposal of property and equipment
                          
          impairment of project assets
                          
          impairment of right-of-use assets
                          
          impairment of parent company guarantees
                         
          impairment of goodwill
                        
          impairment of deferred services
                          
          impairment of other assets
                          
          write-off of accrued expenses and other liabilities
                          
          net accretion of discount on investments
                        
          income tax benefit from release of valuation allowance
                -335,000 -15,100,000   
          provision for credit losses on accounts receivable
                          
          net loss on investments
                1,561,000       
          gain on extinguishment of debt
                      
          other
        285,000 -62,000 -10,000 63,000 -94,000 -19,000 -40,000 -98,000 -118,000 -151,000 -563,000 -117,000 -141,000 56,000 105,000 -17,000   
          changes in operating assets and liabilities:
                          
          accounts receivable
        -3,635,000 6,592,000 -9,579,000 24,351,000 26,137,000 9,105,000 33,872,000 63,943,000 -13,858,000 5,158,000 -62,120,000 -10,067,000 -80,427,000 -49,267,000 -22,771,000 -3,352,000 -26,742,000 -17,164,000 
          inventory
        578,000 -566,000 4,237,000 2,084,000 10,051,000 -737,000 -8,769,000 2,221,000 38,991,000 79,867,000 -102,292,000 -34,857,000 20,843,000 34,397,000 9,930,000 -46,564,000 1,480,000 2,966,000 
          deferred costs with suppliers
            1,205,000 4,888,000 430,000 -257,000 1,820,000 580,000 28,179,000 10,702,000      
          other assets
        6,805,000 873,000 -310,000 2,025,000 -592,000 6,410,000 1,895,000 -1,176,000 -89,000 -131,000 -18,067,000 251,000 -4,178,000 26,892,000 -19,850,000 -32,284,000 -6,723,000 -1,136,000 
          contract origination costs
        -537,000 -380,000 -249,000 -324,000 -1,202,000 -244,000 -327,000 -356,000 -1,740,000 -1,928,000 -1,454,000 -802,000 -4,770,000 -1,217,000 -1,955,000 -1,670,000 -769,000 -203,000 
          project assets
        16,836,000 128,000 -686,000 -1,516,000 -1,495,000 3,414,000 -10,406,000 -390,000 -2,565,000 7,000 -1,432,000 -1,402,000       
          accounts payable
        -679,000 -444,000 -8,189,000 -10,538,000 -17,471,000 -15,752,000 1,357,000 -16,280,000 -7,012,000 -17,278,000 -9,782,000 28,831,000 -9,947,000      
          accrued expense and other liabilities
                    23,881,000      
          deferred revenue
        -45,000 2,558,000 253,000 -3,046,000 -28,409,000 17,261,000 1,555,000 2,715,000 -23,057,000 -28,413,000 46,122,000 9,921,000 19,385,000 3,149,000 10,766,000 17,705,000 -11,429,000 -6,832,000 
          operating lease liabilities
                          
          net cash from operating activities
        8,216,000 11,387,000 -21,278,000 8,536,000 -14,710,000 -9,433,000 -11,886,000 -621,000 -2,129,000 -4,009,000 -165,418,000 -35,821,000 -37,396,000 -36,004,000 -6,625,000 -26,005,000 -32,246,000 -27,187,000 
          capital expenditures
        -927,000 -1,049,000 -1,043,000  -2,396,000 -2,311,000 -3,261,000 -3,524,000 -5,084,000 -2,841,000 -3,945,000 -3,732,000 -4,120,000 -3,652,000 -5,675,000 -4,815,000 -1,795,000 -1,782,000 
          free cash flows
        7,289,000 10,338,000 -22,321,000  -17,106,000 -11,744,000 -15,147,000 -4,145,000 -7,213,000 -6,850,000 -169,363,000 -39,553,000 -41,516,000 -39,656,000 -12,300,000 -30,820,000 -34,041,000 -28,969,000 
          investing activities
                          
          acquisitions, net of cash acquired
                -1,847,000       
          purchase of available-for-sale investments
                -1,968,000 -8,882,000 -49,152,000 -39,099,000 -82,619,000 -57,485,000 -41,437,000 -18,749,000  
          proceeds from maturities of available-for-sale investments
            8,250,000 22,160,000 34,900,000 34,480,000 50,270,000 71,200,000      
          proceeds from sales of available-for-sale investments
                73,917,000      
          purchase of energy storage systems
           -7,000    -51,000 278,000 -272,000 -1,015,000 -1,625,000 -2,137,000 -237,000 -124,000 -108,000 2,569,000 -570,000 
          capital expenditures on internally-developed software
        -927,000 -1,049,000 -1,043,000 -3,583,000 -2,407,000 -2,260,000 -3,145,000 -3,463,000 -3,974,000 -2,735,000 -3,818,000 -3,570,000 -4,115,000 -4,567,000 -4,548,000 -3,537,000 -1,720,000 -1,557,000 
          distribution from equity method investment
                          
          purchase of property and equipment
            11,000 -51,000 -116,000 -61,000 -1,110,000 -106,000 -127,000 -162,000 -5,000 915,000 -1,127,000 -1,278,000 -75,000 -225,000 
          net cash from investing activities
        -927,000 -1,001,000 -1,084,000 -3,590,000 -2,671,000 -2,311,000 -3,210,000 4,675,000 15,471,000 31,787,000 20,638,000 67,831,000 27,552,000 -15,895,000 -13,102,000 -542,928,000 -3,176,000 -173,461,000 
          financing activities
                          
          proceeds from exercise of stock options
                          
          repayment of financing obligations
        -1,286,000 -2,518,000 -5,536,000 -2,819,000 -1,496,000 -2,813,000 -2,099,000 -2,086,000 -4,920,000 -5,179,000 -454,000 -2,133,000 -2,669,000 -820,000 -2,639,000 -4,178,000 -3,866,000 -1,112,000 
          proceeds from issuance of convertible notes, net of issuance costs of 0, 0 and 7,601 for the years ended december 31, 2025, 2024 and 2023, respectively
                          
          repayment of convertible notes
                        
          proceeds from issuance of senior secured notes, net of issuance costs of 5,246, 0 and 0 for the years ended december 31, 2025, 2024 and 2023, respectively
                          
          purchase of capped call options
                        
          (redemption of) investment from non-controlling interests
                11,000         
          repayment of notes payable
                -2,001,000 -100,000     
          net cash from financing activities
        -1,481,000 -7,764,000 4,501,000 -2,819,000 -1,496,000 -2,757,000 -7,327,000 3,142,000 -4,901,000 -5,140,000 102,435,000 -2,156,000 -2,453,000 1,162,000 -3,694,000 -4,287,000 378,276,000 131,632,000 
          effect of exchange rate changes on cash, cash equivalents and restricted cash
        -14,000 -291,000 67,000 158,000 -188,000 216,000 -46,000 233,000 -130,000          
          net increase in cash, cash equivalents and restricted cash
           2,285,000 -19,065,000 -14,285,000 -22,469,000 7,429,000 8,311,000          
          cash, cash equivalents and restricted cash, beginning of year
        58,085,000 106,475,000          
          cash, cash equivalents and restricted cash, end of period
        5,794,000 2,331,000 -17,794,000 60,370,000 -19,065,000 -14,285,000 -22,469,000 113,904,000 8,311,000          
          impairment loss of energy storage systems
            255,000   2,336,000 278,000 1,218,000 851,000       
          loss on disposal and abandonment of property, plant and equipment
                          
          impairment loss of project assets
         164,000 267,000 699,000  251,000 45,000 345,000 18,000 36,000         
          impairment loss of right-of-use assets
                         
          provision for (recovery of) credit losses on accounts receivable
         505,000 1,469,000 78,000               
          accrued expenses and other liabilities
         7,201,000 -5,035,000 3,861,000  -6,596,000 -15,070,000 1,731,000  6,177,000 -3,341,000 -31,746,000       
          lease liabilities
         -2,151,000 -647,000 -542,000  -636,000 -738,000 -807,000  -794,000 -748,000 -593,000  -584,000 -415,000 -54,000 28,000 -42,000 
          proceeds from issuance of senior secured notes, net of issuance costs of 5,246 and 0 for the nine months ended september 30, 2025 and 2024, respectively
                          
          investment from non-controlling interests
                    134,000 191,000     
          net decrease in cash, cash equivalents and restricted cash
         2,331,000                 
          proceeds from issuance of senior secured notes
                          
          investment from (redemption of) non-controlling interests
                         
          net loss
           -25,000,000 -51,137,000 -148,300,000 -582,270,000 -72,307,000 -37,685,000 -77,072,000 19,122,000 -44,778,000 -35,273,000 -34,275,000 -32,023,000 -22,483,000 -34,054,000 115,612,000 
          adjustments to reconcile net loss to net cash from operating activities:
                          
          proceeds from employee equity transactions to be remitted to tax authorities
               5,228,000           
          distribution from (purchase of) equity method investment
                          
          payments for taxes related to net share settlement of stock options
                    -1,529,000 -773,000  
          proceeds from financing obligations
                    1,208,000 311,000 2,910,000 
          proceeds from issuance of convertible notes, net of issuance costs of 0, 7,601 and 0 for the years ended december 31, 2024, 2023 and 2022, respectively
                          
          (recovery of) provision for credit losses on accounts receivable
                          
          proceeds from exercise of stock options and warrants
                 28,000 80,000 149,000 82,000 583,000 264,000 347,000 210,000 145,389,000 
          proceeds from issuance of convertible notes, net of issuance costs of 0 and 7,601 for the nine months ended september 30, 2024 and 2023, respectively
                          
          provision for accounts receivable allowance
              -458,000 -1,004,000 -307,000 20,000 1,212,000 522,000 1,716,000 864,000     
          proceeds from issuance of convertible notes, net of issuance costs of 0 and 7,601 for the six months ended june 30, 2024 and 2023, respectively
                          
          redemption of investment from non-controlling interests
                          
          net (accretion of discount) amortization of premium on investments
               -29,000 -83,000 -372,000 -643,000 -657,000 -424,000 -109,000 117,000 293,000 369,000  
          change in fair value of warrant liability and embedded derivative
                        -137,001,000 
          loss on disposal of property, plant and equipment
                          
          issuance of warrants for services
                        
          net contributions from merger and pipe financing, net of transaction costs of 58,061
                        
          proceeds from issuance of convertible notes, net of issuance costs of 7,601, 0 and 14,299 for the years ended december 31, 2023, 2022 and 2021, respectively
                          
          proceeds from issuance of notes payable, net of issuance costs of 0, 0 and 0 for the years december 31, 2023, 2022 and 2021, respectively
                          
          gain on sale of project assets
                          
          net proceeds from sale of project assets
                          
          capital expenditures on project assets
                          
          proceeds from issuance of convertible notes, net of issuance costs of 7,601 and 0 for the nine months ended september 30, 2023 and 2022, respectively
                          
          proceeds from issuance of convertible notes, net of issuance costs of 7,601 and 0 for the six months ended june 30, 2023 and 2022, respectively
                          
          effect of exchange rate changes on cash and cash equivalents
                  -133,000 126,000 102,000 -168,000 -113,000 -23,000 -263,000 67,000 
          net decrease in cash and cash equivalents
                          
          cash and cash equivalents, beginning of year
                  87,903,000     
          cash and cash equivalents, end of period
                  -42,478,000 117,883,000 -12,195,000 -50,905,000 -23,534,000 174,537,000 342,591,000 -68,949,000 
          proceeds from issuance of notes payable
                          
          redemption of non-controlling interests
                   -72,000       
          net increase in cash and cash equivalents
                   29,980,000 -12,195,000 -50,905,000 -23,534,000 -573,243,000 342,591,000 -68,949,000 
          acquisition of alsoenergy, net of cash acquired
                    -170,000 -532,839,000   
          purchase of equity method investment
                          
          proceeds from issuance of convertible notes, net of issuance costs of 0, 14,299 and 240 for the years ended december 31, 2022, 2021 and 2020, respectively
                          
          proceeds from issuance of notes payable, net of issuance costs of 0, 0 and 1,502 for the years december 31, 2022, 2021 and 2020, respectively
                          
          noncash lease expense
                     591,000 585,000 546,000 616,000 -54,000 
          proceeds from issuance of convertible notes, net of issuance costs of 0 and 8 for the nine months ended september 30, 2022 and 2021, respectively
                          
          proceeds from issuance of notes payable, net of issuance costs of 0 and 101 for the nine months ended september 30, 2022 and 2021, respectively
                          
          accounts payable, accrued expenses and other current liabilities
                          
          other liabilities
                      270,000 -457,000 -225,000 43,000 
          sales and maturities of available-for-sale investments
                          
          proceeds from issuance of convertible notes, net of issuance costs of 0 and 8 for the six months ended june 30, 2022 and 2021, respectively
                          
          proceeds from issuance of notes payable, net of issuance costs of 0 and 101 for the six months ended june 30, 2022 and 2021, respectively
                          
          accretion expense
                       60,000 55,000 62,000 
          accounts payable and accrued expenses
                       61,755,000 27,311,000 2,859,000 
          sales/maturities of available-for-sale investments
                       36,271,000   
          proceeds from issuance of convertible notes, net of issuance costs of 0 and 8 for the three months ended march 31, 2022 and 2021, respectively
                          
          proceeds from issuance of notes payable, net of issuance costs of 0 and 101 for the three months ended march 31, 2022 and 2021, respectively
                       6,000   
          cash and cash equivalents, beginning of period
                       747,780,000 
          right-of-use assets
                          
          sale of available-for-sale investments
                          
          proceeds from issuance of convertible notes, net of issuance costs of 14,299, 240 and 2,308 for the years ended december 31, 2021, 2020 and 2019, respectively
                          
          proceeds from issuance of notes payable, net of issuance costs of 0, 1,502 and 0 for the years december 31, 2021, 2020 and 2019, respectively
                          
          proceeds from issuance of convertible notes, net of issuance costs of 8 and 1,740 for the nine months ended september 30, 2021 and 2020, respectively
                          
          proceeds from issuance of notes payable, net of issuance costs of 101 and 1,502 for the nine months ended september 30, 2021 and 2020, respectively
                          
          proceeds from issuance of convertible notes, net of issuance costs of 8 and 911 for the six months ended june 30, 2021 and 2020, respectively
                          
          proceeds from issuance of notes payable, net of issuance costs of 101 and 1,502 for the six months ended june 30, 2021 and 2020, respectively