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Maui windstorm and wildfires - Utilities Charged (Details) - Natural Disasters and Other Casualty Events - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Maui Windstorm and Wildfires |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |
Total Maui windstorm and wildfires related expenses | $ 59,834 | $ 235,504 | $ 89,395 | $ 2,013,574
Insurance recoveries | (49,070) | (52,158) | (53,374) | (83,610)
Deferral treatment approved by the PUC | (6,237) | (8,589) | (21,809) | (24,143)
Total Maui windstorm and wildfires related expenses, net of insurance recoveries and approved deferral treatment | 4,527 | 174,757 | 14,212 | 1,905,821
Proposed settlement of securities | 47,800 |  | 47,800 |
Legal expenses |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |
Total Maui windstorm and wildfires related expenses | 5,794 | 17,205 | 20,532 | 56,330
Wildfire securities-related claims |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |
Total Maui windstorm and wildfires related expenses | 47,750 |  | 47,750 |
Wildfire tort-related claims |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |
Total Maui windstorm and wildfires related expenses |  | 203,000 |  | 1,915,000
Other expense |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |
Total Maui windstorm and wildfires related expenses | 6,290 | 15,299 | 21,113 | 42,244
Hawaiian Electric Company, Inc. and Subsidiaries | Maui Windstorm and Wildfires |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |
Total Maui windstorm and wildfires related expenses | 10,238 | 228,250 | 32,290 | 1,991,692
Insurance recoveries | (430) | (49,625) | 126 | (75,973)
Deferral treatment approved by the PUC | (6,237) | (8,589) | (21,809) | (24,143)
Total Maui windstorm and wildfires related expenses, net of insurance recoveries and approved deferral treatment | 3,571 | 170,036 | 10,607 | 1,891,576
Adjustments amount | 1,000 |  | 7,600 |
Deferred to a regulatory asset | 500 |  | 4,500 |
Income related to discontinued operations |  | 900 |  | 1,200
Hawaiian Electric Company, Inc. and Subsidiaries | Legal expenses |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |
Total Maui windstorm and wildfires related expenses | 4,316 | 11,821 | 12,469 | 40,169
Hawaiian Electric Company, Inc. and Subsidiaries | Wildfire securities-related claims |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |
Total Maui windstorm and wildfires related expenses | 0 |  | 0 |
Hawaiian Electric Company, Inc. and Subsidiaries | Wildfire tort-related claims |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |
Total Maui windstorm and wildfires related expenses |  | 203,000 |  | 1,915,000
Hawaiian Electric Company, Inc. and Subsidiaries | Other expense |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |
Total Maui windstorm and wildfires related expenses | $ 5,922 | $ 13,429 | $ 19,821 | $ 36,523

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