v3.26.1
Electric utility segment - Schedule of Condensed Consolidating Balance Sheet (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Mar. 31, 2026
Dec. 31, 2025
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Utility property, plant and equipment            
Total property, plant and equipment, net $ 6,347,255   $ 6,188,372      
Current assets            
Cash and cash equivalents 238,732   501,778 $ 154,285    
Regulatory assets 51,669   50,039      
Total current assets 1,252,952   1,884,576      
Other long-term assets            
Operating lease right-of-use assets 48,172   56,604      
Regulatory assets 274,578   258,076      
Defined benefit pension and other postretirement benefit plans asset 221,553   219,211      
Other 257,292   316,040      
Total assets 8,401,802   8,922,879      
Capitalization            
Common stock equity 1,762,887 $ 1,637,369 1,605,919 1,534,432 $ 1,505,876 $ 1,479,089
Current liabilities            
Current portion of long-term debt, net 0   124,959      
Accounts payable 305,686   219,062      
Interest and dividends payable 30,925   31,458      
Regulatory liabilities 31,265   51,997      
Wildfire tort-related claims 457,563   530,000      
Other 383,699   410,458      
Total current liabilities 1,270,136   1,427,737      
Deferred credits and other liabilities            
Operating lease liabilities 35,623   43,278      
Finance lease liabilities 499,402   505,590      
Regulatory liabilities 1,442,389   1,392,147      
Wildfire tort-related claims 890,280   1,436,250      
Other 211,885   203,286      
Total liabilities and shareholders’ equity 8,401,802   8,922,879      
Hawaiian Electric consolidated            
Utility property, plant and equipment            
Land 52,097   52,107      
Plant and equipment 8,832,665   8,719,617      
Right-of-use assets - finance lease 539,485   539,485      
Less accumulated depreciation (3,618,063)   (3,508,592)      
Construction in progress 537,695   382,147      
Utility property, plant and equipment, net 6,343,879   6,184,764      
Nonutility property, plant and equipment, less accumulated depreciation 2,705   2,705      
Total property, plant and equipment, net 6,346,584   6,187,469      
Investment in wholly owned subsidiaries, at equity 0   0      
Current assets            
Cash and cash equivalents 186,259   486,220 106,429   184,148
Advances to affiliates 0          
Customer accounts receivable, net 229,205   172,894      
Accrued unbilled revenues, net 221,887   192,033      
Other accounts receivable, net 21,173   76,346      
Fuel oil stock, at average cost 189,382   113,582      
Materials and supplies, at average cost 140,915   132,803      
Prepayments and other 58,925   57,980      
Regulatory assets 51,669   50,039      
Total current assets 1,099,415   1,281,897      
Other long-term assets            
Operating lease right-of-use assets 47,618   55,863      
Regulatory assets 274,578   258,076      
Defined benefit pension and other postretirement benefit plans asset 221,890   219,477      
Investment in unconsolidated affiliate 0   287,250      
Other 179,805   240,488      
Total other long-term assets 723,891   1,061,154      
Total assets 8,169,890   8,530,520      
Capitalization            
Common stock equity 1,866,258 $ 1,608,695 1,583,399 1,521,617 $ 1,492,244 1,156,955
Long-term debt, net 2,058,431   2,057,874      
Total capitalization 3,924,689   3,641,273      
Current liabilities            
Current portion of operating lease liabilities 16,154   17,565      
Current portion of long-term debt, net 0   124,959      
Accounts payable 302,131   217,203      
Interest and dividends payable 27,265   28,024      
Taxes accrued, including revenue taxes 241,001   263,179      
Regulatory liabilities 31,265   51,997      
Wildfire tort-related claims 409,813   482,250      
Other 120,342   119,278      
Total current liabilities 1,147,971   1,304,455      
Deferred credits and other liabilities            
Operating lease liabilities 35,383   42,753      
Finance lease liabilities 499,402   505,590      
Deferred income taxes 0   0      
Regulatory liabilities 1,442,389   1,392,147      
Unamortized tax credits 63,872   67,918      
Defined benefit pension liability 12,995   6,909      
Wildfire tort-related claims 890,280   1,436,250      
Other 152,909   133,225      
Total deferred credits and other liabilities 3,097,230   3,584,792      
Total liabilities and shareholders’ equity 8,169,890   8,530,520      
Hawaiian Electric consolidated | Affiliated Entity            
Current liabilities            
Short-term borrowings from affiliate 0          
Consolidating adjustments | Hawaiian Electric consolidated            
Utility property, plant and equipment            
Land 0   0      
Plant and equipment 0   0      
Right-of-use assets - finance lease 0   0      
Less accumulated depreciation 0   0      
Construction in progress 0   0      
Utility property, plant and equipment, net 0   0      
Nonutility property, plant and equipment, less accumulated depreciation 0   0      
Total property, plant and equipment, net 0   0      
Investment in wholly owned subsidiaries, at equity (922,451)   (734,296)      
Current assets            
Cash and cash equivalents 0   0 0   0
Advances to affiliates (28,500)          
Customer accounts receivable, net 0   0      
Accrued unbilled revenues, net 0   0      
Other accounts receivable, net (214,275)   (227,245)      
Fuel oil stock, at average cost 0   0      
Materials and supplies, at average cost 0   0      
Prepayments and other (3,311)   (2,449)      
Regulatory assets 0   0      
Total current assets (246,086)   (229,694)      
Other long-term assets            
Operating lease right-of-use assets 0   0      
Regulatory assets 0   0      
Defined benefit pension and other postretirement benefit plans asset 0   0      
Investment in unconsolidated affiliate     0      
Other (163,376)   (150,914)      
Total other long-term assets (163,376)   (150,914)      
Total assets (1,331,913)   (1,114,904)      
Capitalization            
Common stock equity (922,451)   (734,296) (698,333)   (680,414)
Long-term debt, net (115,000)   (115,000)      
Total capitalization (1,037,451)   (849,296)      
Current liabilities            
Current portion of operating lease liabilities 0   0      
Current portion of long-term debt, net     0      
Accounts payable 0   0      
Interest and dividends payable (2,057)   (1,112)      
Taxes accrued, including revenue taxes (3,311)   (2,449)      
Regulatory liabilities 0   0      
Wildfire tort-related claims 0   0      
Other (212,218)   (226,133)      
Total current liabilities (246,086)   (229,694)      
Deferred credits and other liabilities            
Operating lease liabilities 0   0      
Finance lease liabilities 0   0      
Deferred income taxes (48,376)   (35,914)      
Regulatory liabilities 0   0      
Unamortized tax credits 0   0      
Defined benefit pension liability 0   0      
Wildfire tort-related claims 0   0      
Other 0   0      
Total deferred credits and other liabilities (48,376)   (35,914)      
Total liabilities and shareholders’ equity (1,331,913)   (1,114,904)      
Consolidating adjustments | Hawaiian Electric consolidated | Affiliated Entity            
Current liabilities            
Short-term borrowings from affiliate (28,500)          
Hawaiian Electric | Reportable Legal Entities | Hawaiian Electric consolidated            
Utility property, plant and equipment            
Land 42,850   42,860      
Plant and equipment 5,722,564   5,667,936      
Right-of-use assets - finance lease 411,545   411,545      
Less accumulated depreciation (2,245,002)   (2,165,110)      
Construction in progress 424,024   283,687      
Utility property, plant and equipment, net 4,355,981   4,240,918      
Nonutility property, plant and equipment, less accumulated depreciation 1,146   1,146      
Total property, plant and equipment, net 4,357,127   4,242,064      
Investment in wholly owned subsidiaries, at equity 922,451   734,296      
Current assets            
Cash and cash equivalents 114,609   396,215 37,575   118,367
Advances to affiliates 28,500          
Customer accounts receivable, net 49,340   7,278      
Accrued unbilled revenues, net 48,548   24,826      
Other accounts receivable, net 133,667   196,783      
Fuel oil stock, at average cost 147,669   84,938      
Materials and supplies, at average cost 78,833   75,754      
Prepayments and other 42,058   38,321      
Regulatory assets 36,909   32,461      
Total current assets 680,133   856,576      
Other long-term assets            
Operating lease right-of-use assets 32,158   34,743      
Regulatory assets 184,585   177,678      
Defined benefit pension and other postretirement benefit plans asset 136,399   134,785      
Investment in unconsolidated affiliate     287,250      
Other 295,044   344,052      
Total other long-term assets 648,186   978,508      
Total assets 6,607,897   6,811,444      
Capitalization            
Common stock equity 1,866,258   1,583,399 1,521,617   1,156,955
Long-term debt, net 1,619,963   1,619,482      
Total capitalization 3,486,221   3,202,881      
Current liabilities            
Current portion of operating lease liabilities 5,693   5,716      
Current portion of long-term debt, net     61,980      
Accounts payable 218,097   150,843      
Interest and dividends payable 21,842   22,582      
Taxes accrued, including revenue taxes 170,503   184,339      
Regulatory liabilities 8,233   23,127      
Wildfire tort-related claims 327,851   386,500      
Other 92,730   93,475      
Total current liabilities 844,949   928,562      
Deferred credits and other liabilities            
Operating lease liabilities 30,033   32,974      
Finance lease liabilities 376,957   382,227      
Deferred income taxes 0   0      
Regulatory liabilities 1,007,644   980,131      
Unamortized tax credits 45,048   47,973      
Defined benefit pension liability 12,875   6,788      
Wildfire tort-related claims 712,224   1,149,000      
Other 91,946   80,908      
Total deferred credits and other liabilities 2,276,727   2,680,001      
Total liabilities and shareholders’ equity 6,607,897   6,811,444      
Hawaiian Electric | Reportable Legal Entities | Hawaiian Electric consolidated | Affiliated Entity            
Current liabilities            
Short-term borrowings from affiliate 0          
Hawaii Electric Light | Reportable Legal Entities | Hawaiian Electric consolidated            
Utility property, plant and equipment            
Land 5,644   5,644      
Plant and equipment 1,589,428   1,564,628      
Right-of-use assets - finance lease 77,183   77,183      
Less accumulated depreciation (733,288)   (716,715)      
Construction in progress 38,467   34,021      
Utility property, plant and equipment, net 977,434   964,761      
Nonutility property, plant and equipment, less accumulated depreciation 115   115      
Total property, plant and equipment, net 977,549   964,876      
Investment in wholly owned subsidiaries, at equity 0   0      
Current assets            
Cash and cash equivalents 41,313   56,563 39,334   31,534
Advances to affiliates 0          
Customer accounts receivable, net 6,934   2,987      
Accrued unbilled revenues, net 8,866   7,462      
Other accounts receivable, net 49,213   55,970      
Fuel oil stock, at average cost 19,010   11,997      
Materials and supplies, at average cost 22,108   19,184      
Prepayments and other 8,746   9,657      
Regulatory assets 8,182   10,279      
Total current assets 164,372   174,099      
Other long-term assets            
Operating lease right-of-use assets 12,100   16,219      
Regulatory assets 32,283   28,245      
Defined benefit pension and other postretirement benefit plans asset 46,203   45,794      
Investment in unconsolidated affiliate     0      
Other 18,943   18,374      
Total other long-term assets 109,529   108,632      
Total assets 1,251,450   1,247,607      
Capitalization            
Common stock equity 338,257   276,332 253,516   243,964
Long-term debt, net 261,655   261,614      
Total capitalization 599,912   537,946      
Current liabilities            
Current portion of operating lease liabilities 7,921   8,570      
Current portion of long-term debt, net     7,997      
Accounts payable 43,712   34,072      
Interest and dividends payable 3,690   3,440      
Taxes accrued, including revenue taxes 36,506   40,720      
Regulatory liabilities 11,683   12,410      
Wildfire tort-related claims 40,981   47,875      
Other 32,985   37,759      
Total current liabilities 177,478   192,843      
Deferred credits and other liabilities            
Operating lease liabilities 4,378   7,932      
Finance lease liabilities 73,499   74,087      
Deferred income taxes 18,578   12,089      
Regulatory liabilities 255,138   248,885      
Unamortized tax credits 9,277   9,794      
Defined benefit pension liability 120   121      
Wildfire tort-related claims 89,028   143,625      
Other 24,042   20,285      
Total deferred credits and other liabilities 474,060   516,818      
Total liabilities and shareholders’ equity 1,251,450   1,247,607      
Hawaii Electric Light | Reportable Legal Entities | Hawaiian Electric consolidated | Affiliated Entity            
Current liabilities            
Short-term borrowings from affiliate 0          
Maui Electric | Reportable Legal Entities | Hawaiian Electric consolidated            
Utility property, plant and equipment            
Land 3,603   3,603      
Plant and equipment 1,520,673   1,487,053      
Right-of-use assets - finance lease 50,757   50,757      
Less accumulated depreciation (639,773)   (626,767)      
Construction in progress 75,204   64,439      
Utility property, plant and equipment, net 1,010,464   979,085      
Nonutility property, plant and equipment, less accumulated depreciation 1,444   1,444      
Total property, plant and equipment, net 1,011,908   980,529      
Investment in wholly owned subsidiaries, at equity 0   0      
Current assets            
Cash and cash equivalents 5,644   8,572 8,085   16,456
Advances to affiliates 0          
Customer accounts receivable, net 12,557   3,942      
Accrued unbilled revenues, net 5,328   600      
Other accounts receivable, net 52,568   50,838      
Fuel oil stock, at average cost 22,703   16,647      
Materials and supplies, at average cost 39,974   37,865      
Prepayments and other 11,432   12,451      
Regulatory assets 6,578   7,299      
Total current assets 156,784   138,214      
Other long-term assets            
Operating lease right-of-use assets 3,360   4,901      
Regulatory assets 57,710   52,153      
Defined benefit pension and other postretirement benefit plans asset 39,288   38,898      
Investment in unconsolidated affiliate     0      
Other 29,194   28,976      
Total other long-term assets 129,552   124,928      
Total assets 1,298,244   1,243,671      
Capitalization            
Common stock equity 421,607   298,459 288,584   282,876
Long-term debt, net 291,813   291,778      
Total capitalization 713,420   590,237      
Current liabilities            
Current portion of operating lease liabilities 2,540   3,279      
Current portion of long-term debt, net     54,982      
Accounts payable 40,322   32,288      
Interest and dividends payable 3,790   3,114      
Taxes accrued, including revenue taxes 34,108   37,374      
Regulatory liabilities 11,349   16,460      
Wildfire tort-related claims 40,981   47,875      
Other 29,484   34,175      
Total current liabilities 191,074   229,547      
Deferred credits and other liabilities            
Operating lease liabilities 972   1,847      
Finance lease liabilities 48,946   49,276      
Deferred income taxes 28,729   23,825      
Regulatory liabilities 179,607   163,131      
Unamortized tax credits 9,547   10,151      
Defined benefit pension liability 0   0      
Wildfire tort-related claims 89,028   143,625      
Other 36,921   32,032      
Total deferred credits and other liabilities 393,750   423,887      
Total liabilities and shareholders’ equity 1,298,244   1,243,671      
Maui Electric | Reportable Legal Entities | Hawaiian Electric consolidated | Affiliated Entity            
Current liabilities            
Short-term borrowings from affiliate 28,500          
Other subsidiaries | Reportable Legal Entities | Hawaiian Electric consolidated            
Utility property, plant and equipment            
Land 0   0      
Plant and equipment 0   0      
Right-of-use assets - finance lease 0   0      
Less accumulated depreciation 0   0      
Construction in progress 0   0      
Utility property, plant and equipment, net 0   0      
Nonutility property, plant and equipment, less accumulated depreciation 0   0      
Total property, plant and equipment, net 0   0      
Investment in wholly owned subsidiaries, at equity 0   0      
Current assets            
Cash and cash equivalents 24,693   24,870 21,435   17,791
Advances to affiliates 0          
Customer accounts receivable, net 160,374   158,687      
Accrued unbilled revenues, net 159,145   159,145      
Other accounts receivable, net 0   0      
Fuel oil stock, at average cost 0   0      
Materials and supplies, at average cost 0   0      
Prepayments and other 0   0      
Regulatory assets 0   0      
Total current assets 344,212   342,702      
Other long-term assets            
Operating lease right-of-use assets 0   0      
Regulatory assets 0   0      
Defined benefit pension and other postretirement benefit plans asset 0   0      
Investment in unconsolidated affiliate     0      
Other 0   0      
Total other long-term assets 0   0      
Total assets 344,212   342,702      
Capitalization            
Common stock equity 162,587   159,505 $ 156,233   $ 153,574
Long-term debt, net 0   0      
Total capitalization 162,587   159,505      
Current liabilities            
Current portion of operating lease liabilities 0   0      
Current portion of long-term debt, net     0      
Accounts payable 0   0      
Interest and dividends payable 0   0      
Taxes accrued, including revenue taxes 3,195   3,195      
Regulatory liabilities 0   0      
Wildfire tort-related claims 0   0      
Other 177,361   180,002      
Total current liabilities 180,556   183,197      
Deferred credits and other liabilities            
Operating lease liabilities 0   0      
Finance lease liabilities 0   0      
Deferred income taxes 1,069   0      
Regulatory liabilities 0   0      
Unamortized tax credits 0   0      
Defined benefit pension liability 0   0      
Wildfire tort-related claims 0   0      
Other 0   0      
Total deferred credits and other liabilities 1,069   0      
Total liabilities and shareholders’ equity 344,212   $ 342,702      
Other subsidiaries | Reportable Legal Entities | Hawaiian Electric consolidated | Affiliated Entity            
Current liabilities            
Short-term borrowings from affiliate $ 0