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v3.22.4

Electric utility segment - Annual Decoupling Filings (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Oct. 31, 2022 | Dec. 31, 2022
Regulatory Projects and Legal Obligations [Line Items] |  |
2023 ARA revenues | $ 40.1 |
Management Audit savings commitment | (6.6) |
Net 2023 ARA revenues | 33.5 |
Incremental ARA revenues |  | $ 40.1
Annual change in accrued RBA balance through September 30, 2022 (and associated revenue taxes) |  | (13.5)
Incremental EPRM/MPIR Revenue Adjustment |  | (0.1)
Incremental EPRM/MPIR Revenue Adjustment |  | 0.3
Net incremental amount to be collected under the RBA rate tariffs |  | 26.8
Hawaiian Electric |  |
Regulatory Projects and Legal Obligations [Line Items] |  |
2023 ARA revenues | 27.0 |
Management Audit savings commitment | (4.6) |
Net 2023 ARA revenues | 22.4 |
Incremental ARA revenues |  | 27.0
Annual change in accrued RBA balance through September 30, 2022 (and associated revenue taxes) |  | (3.6)
Incremental EPRM/MPIR Revenue Adjustment |  | 0.0
Incremental EPRM/MPIR Revenue Adjustment |  | 0.3
Net incremental amount to be collected under the RBA rate tariffs |  | 23.6
Hawaii Electric Light |  |
Regulatory Projects and Legal Obligations [Line Items] |  |
2023 ARA revenues | 6.6 |
Management Audit savings commitment | (1.0) |
Net 2023 ARA revenues | 5.6 |
Incremental ARA revenues |  | 6.6
Annual change in accrued RBA balance through September 30, 2022 (and associated revenue taxes) |  | (6.7)
Incremental EPRM/MPIR Revenue Adjustment |  | 0.0
Incremental EPRM/MPIR Revenue Adjustment |  | 0.0
Net incremental amount to be collected under the RBA rate tariffs |  | (0.1)
Maui Electric |  |
Regulatory Projects and Legal Obligations [Line Items] |  |
2023 ARA revenues | 6.5 |
Management Audit savings commitment | (1.0) |
Net 2023 ARA revenues | $ 5.5 |
Incremental ARA revenues |  | 6.5
Annual change in accrued RBA balance through September 30, 2022 (and associated revenue taxes) |  | (3.2)
Incremental EPRM/MPIR Revenue Adjustment |  | (0.1)
Incremental EPRM/MPIR Revenue Adjustment |  | 0.0
Net incremental amount to be collected under the RBA rate tariffs |  | $ 3.3

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