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Electric utility segment - Annual decoupling filings summary (Details) $ in Millions | 6 Months Ended
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Jun. 30, 2022 USD ($)
Regulatory Projects and Legal Obligations [Line Items] |
Incremental accrued RBA balance | $ (8.3)
Incremental Performance Incentive Mechanisms (net) | 2.7
Incremental MPIR/EPRM Revenue Adjustment | 2.8
Other | (0.1)
Net incremental amount to be collected under the RBA rate tariffs | (2.9)
Hawaiian Electric |
Regulatory Projects and Legal Obligations [Line Items] |
Incremental accrued RBA balance | (5.7)
Incremental Performance Incentive Mechanisms (net) | 1.9
Incremental MPIR/EPRM Revenue Adjustment | 1.3
Other | (0.1)
Net incremental amount to be collected under the RBA rate tariffs | (2.6)
Hawaii Electric Light |
Regulatory Projects and Legal Obligations [Line Items] |
Incremental accrued RBA balance | 2.1
Incremental Performance Incentive Mechanisms (net) | 0.4
Incremental MPIR/EPRM Revenue Adjustment | 0.8
Other | 0.0
Net incremental amount to be collected under the RBA rate tariffs | 3.3
Maui Electric |
Regulatory Projects and Legal Obligations [Line Items] |
Incremental accrued RBA balance | (4.7)
Incremental Performance Incentive Mechanisms (net) | 0.4
Incremental MPIR/EPRM Revenue Adjustment | 0.7
Other | 0.0
Net incremental amount to be collected under the RBA rate tariffs | $ (3.6)

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