0000354707false2023FY0000046207false2023FY6.6676.667P6Mhttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenues00P3YP3YP3YP4Y33.3333.33252533.3333.33252533.3333.332525252550http://fasb.org/us-gaap/2023#OtherLiabilitieshttp://fasb.org/us-gaap/2023#OtherAssets00003547072023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMember2023-01-012023-12-3100003547072023-06-30iso4217:USD00003547072024-02-15xbrli:shares0000354707he:HawaiianElectricCompanyAndSubsidiariesMember2024-02-150000354707he:ElectricUtilitySegmentMember2023-01-012023-12-310000354707he:ElectricUtilitySegmentMember2022-01-012022-12-310000354707he:ElectricUtilitySegmentMember2021-01-012021-12-310000354707he:BankingSegmentMember2023-01-012023-12-310000354707he:BankingSegmentMember2022-01-012022-12-310000354707he:BankingSegmentMember2021-01-012021-12-310000354707us-gaap:AllOtherSegmentsMember2023-01-012023-12-310000354707us-gaap:AllOtherSegmentsMember2022-01-012022-12-310000354707us-gaap:AllOtherSegmentsMember2021-01-012021-12-3100003547072022-01-012022-12-3100003547072021-01-012021-12-31iso4217:USDxbrli:shares00003547072023-12-3100003547072022-12-310000354707srt:ParentCompanyMember2023-12-310000354707srt:ParentCompanyMember2022-12-310000354707us-gaap:CommonStockMember2020-12-310000354707us-gaap:RetainedEarningsMember2020-12-310000354707us-gaap:AccumulatedOtherComprehensiveIncomeMember2020-12-3100003547072020-12-310000354707us-gaap:RetainedEarningsMember2021-01-012021-12-310000354707us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-01-012021-12-310000354707us-gaap:CommonStockMember2021-01-012021-12-310000354707us-gaap:CommonStockMember2021-12-310000354707us-gaap:RetainedEarningsMember2021-12-310000354707us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-12-3100003547072021-12-310000354707us-gaap:RetainedEarningsMember2022-01-012022-12-310000354707us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-01-012022-12-310000354707us-gaap:CommonStockMember2022-01-012022-12-310000354707us-gaap:CommonStockMember2022-12-310000354707us-gaap:RetainedEarningsMember2022-12-310000354707us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-12-310000354707us-gaap:RetainedEarningsMember2023-01-012023-12-310000354707us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-01-012023-12-310000354707us-gaap:CommonStockMember2023-01-012023-12-310000354707us-gaap:CommonStockMember2023-12-310000354707us-gaap:RetainedEarningsMember2023-12-310000354707us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMember2022-01-012022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMember2021-01-012021-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:NonrelatedPartyMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:NonrelatedPartyMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:PreferredStock20ParValueMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:PreferredStock20ParValueMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:PreferredStock100ParValueMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:PreferredStock100ParValueMember2022-12-310000354707he:HawaiianElectricParentMemberhe:SeriesC4.25PercentPreferredStockMember2022-01-012022-12-31xbrli:pure0000354707he:HawaiianElectricParentMemberhe:SeriesC4.25PercentPreferredStockMember2023-01-012023-12-310000354707he:HawaiianElectricParentMemberhe:SeriesC4.25PercentPreferredStockMember2022-12-310000354707he:HawaiianElectricParentMemberhe:SeriesC4.25PercentPreferredStockMember2023-12-310000354707he:HawaiianElectricParentMemberhe:SeriesD5PercentPreferredStockMember2022-01-012022-12-310000354707he:HawaiianElectricParentMemberhe:SeriesD5PercentPreferredStockMember2023-01-012023-12-310000354707he:HawaiianElectricParentMemberhe:SeriesD5PercentPreferredStockMember2023-12-310000354707he:HawaiianElectricParentMemberhe:SeriesD5PercentPreferredStockMember2022-12-310000354707he:HawaiianElectricParentMemberhe:SeriesE5PercentPreferredStockMember2022-01-012022-12-310000354707he:HawaiianElectricParentMemberhe:SeriesE5PercentPreferredStockMember2023-01-012023-12-310000354707he:HawaiianElectricParentMemberhe:SeriesE5PercentPreferredStockMember2023-12-310000354707he:HawaiianElectricParentMemberhe:SeriesE5PercentPreferredStockMember2022-12-310000354707he:HawaiianElectricParentMemberhe:SeriesH5.25PercentPreferredStockMember2023-01-012023-12-310000354707he:HawaiianElectricParentMemberhe:SeriesH5.25PercentPreferredStockMember2022-01-012022-12-310000354707he:HawaiianElectricParentMemberhe:SeriesH5.25PercentPreferredStockMember2022-12-310000354707he:HawaiianElectricParentMemberhe:SeriesH5.25PercentPreferredStockMember2023-12-310000354707he:HawaiianElectricParentMemberhe:SeriesI5PercentPreferredStockMember2022-01-012022-12-310000354707he:HawaiianElectricParentMemberhe:SeriesI5PercentPreferredStockMember2023-01-012023-12-310000354707he:HawaiianElectricParentMemberhe:SeriesI5PercentPreferredStockMember2022-12-310000354707he:HawaiianElectricParentMemberhe:SeriesI5PercentPreferredStockMember2023-12-310000354707he:HawaiianElectricParentMemberhe:SeriesJ4.75PercentPreferredStockMember2022-01-012022-12-310000354707he:HawaiianElectricParentMemberhe:SeriesJ4.75PercentPreferredStockMember2023-01-012023-12-310000354707he:HawaiianElectricParentMemberhe:SeriesJ4.75PercentPreferredStockMember2022-12-310000354707he:HawaiianElectricParentMemberhe:SeriesJ4.75PercentPreferredStockMember2023-12-310000354707he:HawaiianElectricParentMemberhe:SeriesK4.65PercentPreferredStockMember2023-01-012023-12-310000354707he:HawaiianElectricParentMemberhe:SeriesK4.65PercentPreferredStockMember2022-01-012022-12-310000354707he:HawaiianElectricParentMemberhe:SeriesK4.65PercentPreferredStockMember2023-12-310000354707he:HawaiianElectricParentMemberhe:SeriesK4.65PercentPreferredStockMember2022-12-310000354707he:HawaiiElectricLightCompanyIncMemberhe:SeriesG7.625PercentPreferredStockMember2023-01-012023-12-310000354707he:HawaiiElectricLightCompanyIncMemberhe:SeriesG7.625PercentPreferredStockMember2022-01-012022-12-310000354707he:HawaiiElectricLightCompanyIncMemberhe:SeriesG7.625PercentPreferredStockMember2023-12-310000354707he:HawaiiElectricLightCompanyIncMemberhe:SeriesG7.625PercentPreferredStockMember2022-12-310000354707he:SeriesH7.625PercentPreferredStockMemberhe:MauiElectricCompanyLimitedMember2023-01-012023-12-310000354707he:SeriesH7.625PercentPreferredStockMemberhe:MauiElectricCompanyLimitedMember2022-01-012022-12-310000354707he:SeriesH7.625PercentPreferredStockMemberhe:MauiElectricCompanyLimitedMember2022-12-310000354707he:SeriesH7.625PercentPreferredStockMemberhe:MauiElectricCompanyLimitedMember2023-12-310000354707us-gaap:SecuredDebtMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:Series2019Due20493.50PercentMember2023-12-310000354707us-gaap:SecuredDebtMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:Series2019Due20493.50PercentMember2022-12-310000354707us-gaap:SecuredDebtMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:RefundingSeries2019Due20393.20PercentMember2023-12-310000354707us-gaap:SecuredDebtMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:RefundingSeries2019Due20393.20PercentMember2022-12-310000354707us-gaap:SecuredDebtMemberhe:RefundingSeries2017ADue20263.10PercentMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707us-gaap:SecuredDebtMemberhe:RefundingSeries2017ADue20263.10PercentMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707us-gaap:SecuredDebtMemberhe:RefundingSeries2017BDue20374.00PercentMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707us-gaap:SecuredDebtMemberhe:RefundingSeries2017BDue20374.00PercentMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707us-gaap:SecuredDebtMemberhe:A3.25RefundingSeries2015SPRBsdue2025Memberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707us-gaap:SecuredDebtMemberhe:A3.25RefundingSeries2015SPRBsdue2025Memberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707us-gaap:SecuredDebtMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707us-gaap:SecuredDebtMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707he:UnsecuredSeniorNotes611PercentDue2030Memberus-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707he:UnsecuredSeniorNotes611PercentDue2030Memberus-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707us-gaap:SeniorNotesMemberhe:UnsecuredSeniorNotes625PercentDue2033Memberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707us-gaap:SeniorNotesMemberhe:UnsecuredSeniorNotes625PercentDue2033Memberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotes670PercentDue2053Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotes670PercentDue2053Member2022-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesAt370PercentAndDue2032Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesAt370PercentAndDue2032Member2022-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesAt351PercentAndDue2050Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesAt351PercentAndDue2050Member2022-12-310000354707he:UnsecuredSeniorNotesAt328PercentAndDue2040Memberus-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707he:UnsecuredSeniorNotesAt328PercentAndDue2040Memberus-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesAt396PercentAndDue2050Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesAt396PercentAndDue2050Member2022-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesAt331PercentAndDue2030Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesAt331PercentAndDue2030Member2022-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesAt421PercentAndDue2034Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesAt421PercentAndDue2034Member2022-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesAt4.38PercentAndDue2028Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesAt4.38PercentAndDue2028Member2022-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesAt4.53PercentAndDue2033Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesAt4.53PercentAndDue2033Member2022-12-310000354707us-gaap:SeniorNotesMemberhe:UnsecuredSeniorNotesAt4.72PercentAndDue2048Memberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707us-gaap:SeniorNotesMemberhe:UnsecuredSeniorNotesAt4.72PercentAndDue2048Memberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesAt4.31PercentAndDue2047Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesAt4.31PercentAndDue2047Member2022-12-310000354707us-gaap:SeniorNotesMemberhe:UnsecuredSeniorNotesDue20464.54Memberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707us-gaap:SeniorNotesMemberhe:UnsecuredSeniorNotesDue20464.54Memberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesDue20455.23Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesDue20455.23Member2022-12-310000354707he:UnsecuredSeniorNotesDueJuly20274.84Memberus-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707he:UnsecuredSeniorNotesDueJuly20274.84Memberus-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesDue20435.65Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesDue20435.65Member2022-12-310000354707us-gaap:SeniorNotesMemberhe:UnsecuredSeniorNotesDue20234.55Memberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707us-gaap:SeniorNotesMemberhe:UnsecuredSeniorNotesDue20234.55Memberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesDue20294.72Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesDue20294.72Member2022-12-310000354707he:UnsecuredSeniorNotesDue20425.39Memberus-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707he:UnsecuredSeniorNotesDue20425.39Memberus-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707us-gaap:SeniorNotesMemberhe:UnsecuredSeniorNotes4.53PercentDue2032Memberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707us-gaap:SeniorNotesMemberhe:UnsecuredSeniorNotes4.53PercentDue2032Memberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:RevolvingCreditFacility180PercentDue2026And2027Memberhe:SecuredOvernightFinancingRateSOFRMemberus-gaap:LineOfCreditMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:RevolvingCreditFacility180PercentDue2026And2027Memberus-gaap:LineOfCreditMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:RevolvingCreditFacility180PercentDue2026And2027Memberus-gaap:LineOfCreditMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:UnsecuredDebtMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:UnsecuredDebtMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:CommonStockMember2020-12-310000354707us-gaap:AdditionalPaidInCapitalMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2020-12-310000354707us-gaap:RetainedEarningsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2020-12-310000354707us-gaap:AccumulatedOtherComprehensiveIncomeMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2020-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMember2020-12-310000354707us-gaap:RetainedEarningsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2021-01-012021-12-310000354707us-gaap:AccumulatedOtherComprehensiveIncomeMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2021-01-012021-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:CommonStockMember2021-01-012021-12-310000354707us-gaap:AdditionalPaidInCapitalMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2021-01-012021-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:CommonStockMember2021-12-310000354707us-gaap:AdditionalPaidInCapitalMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2021-12-310000354707us-gaap:RetainedEarningsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2021-12-310000354707us-gaap:AccumulatedOtherComprehensiveIncomeMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2021-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMember2021-12-310000354707us-gaap:RetainedEarningsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-01-012022-12-310000354707us-gaap:AccumulatedOtherComprehensiveIncomeMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-01-012022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:CommonStockMember2022-01-012022-12-310000354707us-gaap:AdditionalPaidInCapitalMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-01-012022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:CommonStockMember2022-12-310000354707us-gaap:AdditionalPaidInCapitalMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707us-gaap:RetainedEarningsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707us-gaap:AccumulatedOtherComprehensiveIncomeMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707us-gaap:RetainedEarningsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-01-012023-12-310000354707us-gaap:AccumulatedOtherComprehensiveIncomeMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:CommonStockMember2023-12-310000354707us-gaap:AdditionalPaidInCapitalMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707us-gaap:RetainedEarningsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707us-gaap:AccumulatedOtherComprehensiveIncomeMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-31he:branch0000354707he:OahuMember2023-12-310000354707he:MauiMember2023-12-310000354707stpr:HI2023-12-310000354707he:KauaiMember2023-12-310000354707he:MolokaiMember2023-12-310000354707srt:MinimumMember2023-01-012023-12-310000354707srt:MaximumMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMember2022-01-012022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMember2021-01-012021-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMember2023-01-012023-12-310000354707us-gaap:RestrictedStockUnitsRSUMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:LoansReceivableMember2023-01-012023-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:MortgageReceivablesMember2023-01-012023-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:ConsumerLoanMember2023-01-012023-12-310000354707he:AmericanSavingsBankFSBMember2023-01-012023-12-310000354707he:AmericanSavingsBankFSBMember2022-12-310000354707he:AmericanSavingsBankFSBMember2023-12-310000354707he:MeasurementInputTerminalValueMemberus-gaap:IncomeApproachValuationTechniqueMember2023-12-310000354707he:ValuationPubliclyTradedCompanyMethodMember2023-12-310000354707he:AmericanSavingsBankFSBMember2021-01-012021-12-310000354707he:AmericanSavingsBankFSBMember2022-01-012022-12-310000354707he:AmericanSavingsBankFSBMemberhe:MeasurementBandAMember2023-01-012023-12-310000354707he:AmericanSavingsBankFSBMemberhe:MeasurementBandBMember2023-01-012023-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember2023-01-012023-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember2022-01-012022-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember2021-01-012021-12-31he:customer0000354707us-gaap:NaturalDisastersAndOtherCasualtyEventsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-3100003547072023-08-082023-08-080000354707he:CountyOfMauiMemberhe:MauiWildfireNegligenceMemberus-gaap:LossFromCatastrophesMember2023-01-012023-12-31he:claim0000354707he:MauiWildfireNegligenceMemberus-gaap:LossFromCatastrophesMemberhe:SubrogationInsurersMember2023-01-012023-12-310000354707he:MauiWildfireNegligenceMemberus-gaap:LossFromCatastrophesMember2023-01-012023-12-31he:plaintiff0000354707us-gaap:NaturalDisastersAndOtherCasualtyEventsMember2023-11-080000354707he:MauiWildfireNegligenceMemberus-gaap:LossFromCatastrophesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-01-012023-12-310000354707he:InsuranceClaimsLegalRelatedRecoveriesMember2023-01-012023-12-310000354707he:InsuranceClaimsLegalRelatedRecoveriesMember2023-12-310000354707us-gaap:LossFromCatastrophesMemberus-gaap:NaturalDisastersAndOtherCasualtyEventsMember2023-01-012023-12-310000354707he:LossFromCatastrophesLegalExpensesMemberus-gaap:NaturalDisastersAndOtherCasualtyEventsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-01-012023-12-310000354707he:LossFromCatastrophesLegalExpensesMemberus-gaap:NaturalDisastersAndOtherCasualtyEventsMember2023-01-012023-12-310000354707he:LossFromCatastrophesOneOhanaInitiativeContributionMemberus-gaap:NaturalDisastersAndOtherCasualtyEventsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-01-012023-12-310000354707he:LossFromCatastrophesOneOhanaInitiativeContributionMemberus-gaap:NaturalDisastersAndOtherCasualtyEventsMember2023-01-012023-12-310000354707us-gaap:NaturalDisastersAndOtherCasualtyEventsMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:LossFromCatastrophesOtherExpenseMember2023-01-012023-12-310000354707us-gaap:NaturalDisastersAndOtherCasualtyEventsMemberhe:LossFromCatastrophesOtherExpenseMember2023-01-012023-12-310000354707us-gaap:LossFromCatastrophesMemberus-gaap:NaturalDisastersAndOtherCasualtyEventsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-01-012023-12-310000354707he:LossFromCatastrophesOneOhanaInitiativeContributionMemberus-gaap:NaturalDisastersAndOtherCasualtyEventsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707he:HamakuaEnergyLLCMember2017-01-012017-12-31utr:MW0000354707he:MauoLLCMember2018-01-012018-12-31utr:MWh0000354707he:KaieieWahoCompanyLLCMember2020-09-012020-09-30utr:acre0000354707he:GreenEnergyTeamLLCMemberhe:MahipapaLLCMember2022-07-310000354707he:ElectricUtilitySegmentMember2023-12-310000354707he:BankingSegmentMember2023-12-310000354707us-gaap:AllOtherSegmentsMember2023-12-310000354707us-gaap:OperatingSegmentsMemberhe:ElectricUtilitySegmentMember2022-01-012022-12-310000354707us-gaap:OperatingSegmentsMemberhe:BankingSegmentMember2022-01-012022-12-310000354707us-gaap:AllOtherSegmentsMemberus-gaap:OperatingSegmentsMember2022-01-012022-12-310000354707us-gaap:OperatingSegmentsMember2022-01-012022-12-310000354707he:ElectricUtilitySegmentMemberus-gaap:IntersegmentEliminationMember2022-01-012022-12-310000354707us-gaap:IntersegmentEliminationMemberhe:BankingSegmentMember2022-01-012022-12-310000354707us-gaap:AllOtherSegmentsMemberus-gaap:IntersegmentEliminationMember2022-01-012022-12-310000354707us-gaap:IntersegmentEliminationMember2022-01-012022-12-310000354707he:ElectricUtilitySegmentMember2022-12-310000354707he:BankingSegmentMember2022-12-310000354707us-gaap:AllOtherSegmentsMember2022-12-310000354707us-gaap:OperatingSegmentsMemberhe:ElectricUtilitySegmentMember2021-01-012021-12-310000354707us-gaap:OperatingSegmentsMemberhe:BankingSegmentMember2021-01-012021-12-310000354707us-gaap:AllOtherSegmentsMemberus-gaap:OperatingSegmentsMember2021-01-012021-12-310000354707us-gaap:OperatingSegmentsMember2021-01-012021-12-310000354707he:ElectricUtilitySegmentMemberus-gaap:IntersegmentEliminationMember2021-01-012021-12-310000354707us-gaap:IntersegmentEliminationMemberhe:BankingSegmentMember2021-01-012021-12-310000354707us-gaap:AllOtherSegmentsMemberus-gaap:IntersegmentEliminationMember2021-01-012021-12-310000354707us-gaap:IntersegmentEliminationMember2021-01-012021-12-310000354707he:ElectricUtilitySegmentMember2021-12-310000354707he:BankingSegmentMember2021-12-310000354707us-gaap:AllOtherSegmentsMember2021-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:RetirementBenefitCostAssetMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:RetirementBenefitCostAssetMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMembersrt:MinimumMemberus-gaap:DeferredIncomeTaxChargesMember2023-01-012023-12-310000354707srt:MaximumMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:DeferredIncomeTaxChargesMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:DeferredIncomeTaxChargesMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:DeferredIncomeTaxChargesMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMembersrt:MinimumMemberhe:DecouplingRevenueBalancingAccountMember2023-01-012023-12-310000354707srt:MaximumMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:DecouplingRevenueBalancingAccountMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:DecouplingRevenueBalancingAccountMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:DecouplingRevenueBalancingAccountMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:RightOfUseAssetsMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:RightOfUseAssetsMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:RightOfUseAssetsMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:RecoverableVacationPayMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:RecoverableVacationPayMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:RecoverableVacationPayMember2022-12-310000354707he:COVID19RelatedCostsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707he:COVID19RelatedCostsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:ECRCAndPPACMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:ECRCAndPPACMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:ECRCAndPPACMember2022-12-310000354707he:MauiWindstormAndWildfireRelatedCostsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707he:MauiWindstormAndWildfireRelatedCostsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:RetirementOfGeneratingUnitsMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:RetirementOfGeneratingUnitsMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:RetirementOfGeneratingUnitsMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:OtherRegulatoryAssetMembersrt:MinimumMember2023-01-012023-12-310000354707srt:MaximumMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:OtherRegulatoryAssetMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:OtherRegulatoryAssetMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:OtherRegulatoryAssetMember2022-12-310000354707he:CurrentAssetsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707he:CurrentAssetsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:LongTermAssetsMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:LongTermAssetsMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:CostOfRemovalInExcessOfSalvageValueMembersrt:MinimumMember2023-01-012023-12-310000354707srt:MaximumMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:CostOfRemovalInExcessOfSalvageValueMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:CostOfRemovalInExcessOfSalvageValueMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:CostOfRemovalInExcessOfSalvageValueMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMembersrt:MinimumMemberus-gaap:DeferredIncomeTaxChargesMember2023-01-012023-12-310000354707srt:MaximumMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:DeferredIncomeTaxChargesMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:DeferredIncomeTaxChargesMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:DeferredIncomeTaxChargesMember2022-12-310000354707he:DecouplingRevenueBalancingAccountMemberhe:HawaiianElectricCompanyAndSubsidiariesMembersrt:MinimumMember2023-01-012023-12-310000354707srt:MaximumMemberhe:DecouplingRevenueBalancingAccountMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-01-012023-12-310000354707he:DecouplingRevenueBalancingAccountMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707he:DecouplingRevenueBalancingAccountMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707us-gaap:PensionCostsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707us-gaap:PensionCostsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:SolarTaxCreditsMembersrt:MinimumMember2023-01-012023-12-310000354707srt:MaximumMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:SolarTaxCreditsMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:SolarTaxCreditsMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:SolarTaxCreditsMember2022-12-310000354707he:ECRCAndPPACMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707he:ECRCAndPPACMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707he:EnterpriseResourcePlanningERPBenefitsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-01-012023-12-310000354707he:EnterpriseResourcePlanningERPBenefitsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707he:EnterpriseResourcePlanningERPBenefitsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:OtherRegulatoryLiabilityMembersrt:MinimumMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:OtherRegulatoryLiabilityMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:OtherRegulatoryLiabilityMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:CurrentLiabilitiesMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:CurrentLiabilitiesMember2022-12-310000354707he:LongtermLiabilitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707he:LongtermLiabilitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:HonoluluGeneratingUnits8And9Member2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:ERPEAMImplementationProjectMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:ERPEAMImplementationProjectMember2018-10-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:ERPEAMImplementationProjectMember2019-06-100000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:ERPEAMImplementationProjectMember2023-12-310000354707he:HawaiianElectricParentMemberhe:ERPEAMImplementationProjectMember2023-12-310000354707he:HawaiiElectricLightCompanyIncMemberhe:ERPEAMImplementationProjectMember2023-12-310000354707he:MauiElectricCompanyLimitedMemberhe:ERPEAMImplementationProjectMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:COVID19Member2023-12-292023-12-290000354707he:HawaiianElectricCompanyAndSubsidiariesMember2023-12-292023-12-290000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:COVID19Member2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:SuspensionOfDisconnectionsMember2023-12-310000354707us-gaap:CustomerConcentrationRiskMemberhe:FederalGovernmentAgenciesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:RegulatedOperatingRevenueElectricNonNuclearMember2023-01-012023-12-310000354707us-gaap:CustomerConcentrationRiskMemberhe:FederalGovernmentAgenciesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:RegulatedOperatingRevenueElectricNonNuclearMember2022-01-012022-12-310000354707us-gaap:CustomerConcentrationRiskMemberhe:FederalGovernmentAgenciesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:RegulatedOperatingRevenueElectricNonNuclearMember2021-01-012021-12-310000354707he:HawaiianElectricParentMemberhe:MultipleSeriesPreferredStockMember2023-12-310000354707he:HawaiianElectricParentMemberhe:SeriesIPreferredStockMember2023-12-310000354707us-gaap:SeriesGPreferredStockMemberhe:SubsidiariesTwoMember2023-12-310000354707he:SubsidiariesThreeMemberus-gaap:SeriesHPreferredStockMember2023-12-310000354707he:HawaiiElectricLightCompanyIncMemberhe:HamakuaEnergyLLCMember2023-01-012023-12-310000354707he:HawaiiElectricLightCompanyIncMemberhe:HamakuaEnergyLLCMember2022-01-012022-12-310000354707he:HawaiiElectricLightCompanyIncMemberhe:HamakuaEnergyLLCMember2021-01-012021-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMembersrt:ParentCompanyMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMembersrt:ParentCompanyMember2023-12-310000354707srt:SubsidiariesMember2023-01-012023-12-31he:agreementhe:entity0000354707he:HuHonuaBioenergyLLCMember2012-05-012012-05-310000354707he:MolokaiNewEnergyPartnersMember2018-07-012018-07-310000354707he:MauiElectricCompanyLimitedMember2023-12-310000354707he:HawaiianElectricParentMemberhe:PCBContaminationMember2023-12-310000354707he:HawaiianElectricParentMemberhe:KapoleiPetroleumContaminationMemberhe:JamesCampbellCompanyMember2022-01-012022-12-3100003547072023-09-012023-09-010000354707he:HawaiianElectricParentMemberhe:KapoleiPetroleumContaminationMemberhe:JamesCampbellCompanyMember2023-09-012023-09-010000354707he:HawaiianElectricCompanyAndSubsidiariesMember2023-02-012023-02-280000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:FirmCapacityPowerPurchaseAgreementMember2023-12-310000354707he:RenewableDispatchableGenerationPlusEnergyStorageAndEnergyPowerPurchaseAgreementsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:FuelTransportationMember2023-12-310000354707he:Stage1And2RenewablePPAsMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-01-012023-12-31he:contract0000354707he:KalaeloaPartnersLPMemberhe:HawaiianElectricParentMember2023-01-012023-12-310000354707he:KalaeloaPartnersLPMemberhe:HawaiianElectricParentMember2022-01-012022-12-310000354707he:KalaeloaPartnersLPMemberhe:HawaiianElectricParentMember2021-01-012021-12-310000354707he:AESHawaiianIncMemberhe:HawaiianElectricParentMember2023-01-012023-12-310000354707he:AESHawaiianIncMemberhe:HawaiianElectricParentMember2022-01-012022-12-310000354707he:AESHawaiianIncMemberhe:HawaiianElectricParentMember2021-01-012021-12-310000354707he:HawaiianElectricParentMemberhe:HpowerMember2023-01-012023-12-310000354707he:HawaiianElectricParentMemberhe:HpowerMember2022-01-012022-12-310000354707he:HawaiianElectricParentMemberhe:HpowerMember2021-01-012021-12-310000354707he:HawaiianElectricParentMemberhe:HamakuaEnergyLLCMember2023-01-012023-12-310000354707he:HawaiianElectricParentMemberhe:HamakuaEnergyLLCMember2022-01-012022-12-310000354707he:HawaiianElectricParentMemberhe:HamakuaEnergyLLCMember2021-01-012021-12-310000354707he:HawaiianElectricParentMemberhe:PunaGeothermalVentureMember2023-01-012023-12-310000354707he:HawaiianElectricParentMemberhe:PunaGeothermalVentureMember2022-01-012022-12-310000354707he:HawaiianElectricParentMemberhe:PunaGeothermalVentureMember2021-01-012021-12-310000354707he:HawaiianElectricParentMemberhe:WindIndependentPowerProducersMember2023-01-012023-12-310000354707he:HawaiianElectricParentMemberhe:WindIndependentPowerProducersMember2022-01-012022-12-310000354707he:HawaiianElectricParentMemberhe:WindIndependentPowerProducersMember2021-01-012021-12-310000354707he:SolarIndependentPowerProducerMemberhe:HawaiianElectricParentMember2023-01-012023-12-310000354707he:SolarIndependentPowerProducerMemberhe:HawaiianElectricParentMember2022-01-012022-12-310000354707he:SolarIndependentPowerProducerMemberhe:HawaiianElectricParentMember2021-01-012021-12-310000354707he:HawaiianElectricParentMemberhe:OtherIndependentPowerProducersIncludingNettingMember2023-01-012023-12-310000354707he:HawaiianElectricParentMemberhe:OtherIndependentPowerProducersMember2022-01-012022-12-310000354707he:HawaiianElectricParentMemberhe:OtherIndependentPowerProducersMember2021-01-012021-12-310000354707he:HawaiianElectricParentMember2023-01-012023-12-310000354707he:HawaiianElectricParentMember2022-01-012022-12-310000354707he:HawaiianElectricParentMember2021-01-012021-12-310000354707he:WaenaSwitchyardSynchronousCondenserProjectMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2020-10-31he:transmission_lineutr:kVhe:generationUnit0000354707he:WaenaSwitchyardSynchronousCondenserProjectMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2021-11-300000354707he:WaenaSwitchyardSynchronousCondenserProjectMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707he:WaenaBatteryEnergyStorageSystemProjectMember2020-09-012020-09-300000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:WaenaBatteryEnergyStorageSystemProjectMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:SubsequentEventMemberhe:ClimateAdaptationTransmissionAndDistributionResilienceProgramMember2024-01-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:SubsequentEventMemberhe:ClimateAdaptationTransmissionAndDistributionResilienceProgramMember2024-01-312024-01-310000354707he:HawaiianElectricCompanyAndSubsidiariesMember2023-08-290000354707he:HawaiianElectricCompanyAndSubsidiariesMember2022-06-17he:mechanism0000354707he:HawaiianElectricCompanyAndSubsidiariesMember2020-12-232020-12-230000354707he:HawaiianElectricCompanyAndSubsidiariesMember2020-12-230000354707he:SchofieldGenerationStationMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:WestLochPVProjectMember2023-01-012023-12-310000354707he:GridModernizationStrategyPhase1ProjectMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:WaiawaUFLSProjectMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:WaenaSwitchyardSynchronousProjectMember2023-01-012023-12-31he:project0000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:SubsequentEventMember2024-01-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:SubsequentEventMember2024-01-312024-01-3100003547072020-12-232020-12-230000354707he:HawaiianElectricCompanyAndSubsidiariesMember2023-02-280000354707he:HawaiianElectricCompanyAndSubsidiariesMember2020-01-012020-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMember2019-12-310000354707he:HawaiianElectricParentMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMember2020-07-090000354707he:HawaiianElectricCompanyAndSubsidiariesMember2020-09-152020-09-150000354707he:HawaiianElectricCompanyAndSubsidiariesMember2021-02-160000354707he:HawaiianElectricCompanyAndSubsidiariesMember2021-09-012021-11-300000354707he:HawaiianElectricCompanyAndSubsidiariesMember2022-12-012023-03-310000354707he:HawaiianElectricCompanyAndSubsidiariesMember2021-03-230000354707he:HawaiiElectricLightCompanyIncMember2023-12-310000354707he:HawaiianElectricParentMember2023-10-312023-10-310000354707he:HawaiiElectricLightCompanyIncMember2023-10-312023-10-310000354707he:MauiElectricCompanyLimitedMember2023-10-312023-10-3100003547072023-10-312023-10-310000354707he:HawaiiElectricLightCompanyIncMember2023-01-012023-12-310000354707he:MauiElectricCompanyLimitedMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMember2020-10-302020-10-300000354707he:HawaiianElectricCompanyAndSubsidiariesMember2020-10-30he:installation0000354707he:HawaiianElectricCompanyAndSubsidiariesMember2022-03-012022-03-010000354707srt:ParentCompanyMembersrt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-01-012023-12-310000354707he:HawaiiElectricLightCompanyIncMembersrt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-01-012023-12-310000354707srt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:MauiElectricCompanyLimitedMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMembersrt:ConsolidationEliminationsMember2023-01-012023-12-310000354707srt:ParentCompanyMembersrt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-01-012022-12-310000354707he:HawaiiElectricLightCompanyIncMembersrt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-01-012022-12-310000354707srt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:MauiElectricCompanyLimitedMember2022-01-012022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMembersrt:ConsolidationEliminationsMember2022-01-012022-12-310000354707srt:ParentCompanyMembersrt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2021-01-012021-12-310000354707he:HawaiiElectricLightCompanyIncMembersrt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2021-01-012021-12-310000354707srt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:MauiElectricCompanyLimitedMember2021-01-012021-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMembersrt:ConsolidationEliminationsMember2021-01-012021-12-310000354707srt:ParentCompanyMembersrt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707he:HawaiiElectricLightCompanyIncMembersrt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707srt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:MauiElectricCompanyLimitedMember2023-12-310000354707srt:ReportableLegalEntitiesMemberhe:OtherSubsidiariesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMembersrt:ConsolidationEliminationsMember2023-12-310000354707srt:ParentCompanyMembersrt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMembersrt:AffiliatedEntityMember2023-12-310000354707he:HawaiiElectricLightCompanyIncMembersrt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMembersrt:AffiliatedEntityMember2023-12-310000354707srt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMembersrt:AffiliatedEntityMemberhe:MauiElectricCompanyLimitedMember2023-12-310000354707srt:ReportableLegalEntitiesMemberhe:OtherSubsidiariesMemberhe:HawaiianElectricCompanyAndSubsidiariesMembersrt:AffiliatedEntityMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMembersrt:AffiliatedEntityMembersrt:ConsolidationEliminationsMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMembersrt:AffiliatedEntityMember2023-12-310000354707srt:ParentCompanyMembersrt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707he:HawaiiElectricLightCompanyIncMembersrt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707srt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:MauiElectricCompanyLimitedMember2022-12-310000354707srt:ReportableLegalEntitiesMemberhe:OtherSubsidiariesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMembersrt:ConsolidationEliminationsMember2022-12-310000354707srt:ParentCompanyMembersrt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:NonrelatedPartyMember2022-12-310000354707he:HawaiiElectricLightCompanyIncMembersrt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:NonrelatedPartyMember2022-12-310000354707srt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:NonrelatedPartyMemberhe:MauiElectricCompanyLimitedMember2022-12-310000354707srt:ReportableLegalEntitiesMemberhe:OtherSubsidiariesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:NonrelatedPartyMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:NonrelatedPartyMembersrt:ConsolidationEliminationsMember2022-12-310000354707srt:ParentCompanyMembersrt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMembersrt:AffiliatedEntityMember2022-12-310000354707he:HawaiiElectricLightCompanyIncMembersrt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMembersrt:AffiliatedEntityMember2022-12-310000354707srt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMembersrt:AffiliatedEntityMemberhe:MauiElectricCompanyLimitedMember2022-12-310000354707srt:ReportableLegalEntitiesMemberhe:OtherSubsidiariesMemberhe:HawaiianElectricCompanyAndSubsidiariesMembersrt:AffiliatedEntityMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMembersrt:AffiliatedEntityMembersrt:ConsolidationEliminationsMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMembersrt:AffiliatedEntityMember2022-12-310000354707srt:ParentCompanyMembersrt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2020-12-310000354707he:HawaiiElectricLightCompanyIncMembersrt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2020-12-310000354707srt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:MauiElectricCompanyLimitedMember2020-12-310000354707srt:ReportableLegalEntitiesMemberhe:OtherSubsidiariesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2020-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMembersrt:ConsolidationEliminationsMember2020-12-310000354707srt:ParentCompanyMembersrt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2021-12-310000354707he:HawaiiElectricLightCompanyIncMembersrt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2021-12-310000354707srt:ReportableLegalEntitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:MauiElectricCompanyLimitedMember2021-12-310000354707srt:ReportableLegalEntitiesMemberhe:OtherSubsidiariesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2021-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMembersrt:ConsolidationEliminationsMember2021-12-310000354707srt:ReportableLegalEntitiesMemberhe:OtherSubsidiariesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-01-012023-12-310000354707srt:ReportableLegalEntitiesMemberhe:OtherSubsidiariesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-01-012022-12-310000354707srt:ReportableLegalEntitiesMemberhe:OtherSubsidiariesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2021-01-012021-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:FinancialServiceMember2023-01-012023-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:FinancialServiceMember2022-01-012022-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:FinancialServiceMember2021-01-012021-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:DepositAccountMember2023-01-012023-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:DepositAccountMember2022-01-012022-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:DepositAccountMember2021-01-012021-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:FinancialServiceOtherMember2023-01-012023-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:FinancialServiceOtherMember2022-01-012022-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:FinancialServiceOtherMember2021-01-012021-12-310000354707he:AmericanSavingsBankFSBMemberhe:BankOwnedLifeInsuranceIncomeMember2023-01-012023-12-310000354707he:AmericanSavingsBankFSBMemberhe:BankOwnedLifeInsuranceIncomeMember2022-01-012022-12-310000354707he:AmericanSavingsBankFSBMemberhe:BankOwnedLifeInsuranceIncomeMember2021-01-012021-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:MortgageBankingMember2023-01-012023-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:MortgageBankingMember2022-01-012022-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:MortgageBankingMember2021-01-012021-12-310000354707he:AmericanSavingsBankFSBMemberhe:OtherIncomeNetMember2023-01-012023-12-310000354707he:AmericanSavingsBankFSBMemberhe:OtherIncomeNetMember2022-01-012022-12-310000354707he:AmericanSavingsBankFSBMemberhe:OtherIncomeNetMember2021-01-012021-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:USTreasuryAndGovernmentMember2023-12-31he:issue0000354707he:AmericanSavingsBankFSBMemberus-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember2023-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:CorporateDebtSecuritiesMember2023-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:AssetBackedSecuritiesMember2023-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:USTreasuryAndGovernmentMember2022-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember2022-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:CorporateDebtSecuritiesMember2022-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:AssetBackedSecuritiesMember2022-12-310000354707he:AmericanSavingsBankFSBMember2022-10-012022-10-31he:security0000354707he:AmericanSavingsBankFSBMember2022-10-310000354707srt:FederalHomeLoanBankOfDesMoinesMember2023-12-310000354707srt:FederalHomeLoanBankOfDesMoinesMember2022-12-310000354707he:Residential1To4FamilyPortfolioSegmentMember2023-12-310000354707he:Residential1To4FamilyPortfolioSegmentMember2022-12-310000354707us-gaap:CommercialRealEstatePortfolioSegmentMember2023-12-310000354707us-gaap:CommercialRealEstatePortfolioSegmentMember2022-12-310000354707us-gaap:HomeEquityMember2023-12-310000354707us-gaap:HomeEquityMember2022-12-310000354707he:ResidentialLandPortfolioSegmentMember2023-12-310000354707he:ResidentialLandPortfolioSegmentMember2022-12-310000354707us-gaap:ConstructionLoansMember2023-12-310000354707us-gaap:ConstructionLoansMember2022-12-310000354707he:ResidentialConstructionPortfolioSegmentMember2023-12-310000354707he:ResidentialConstructionPortfolioSegmentMember2022-12-310000354707us-gaap:RealEstateLoanMember2023-12-310000354707us-gaap:RealEstateLoanMember2022-12-310000354707us-gaap:CommercialLoanMember2023-12-310000354707us-gaap:CommercialLoanMember2022-12-310000354707us-gaap:ConsumerLoanMember2023-12-310000354707us-gaap:ConsumerLoanMember2022-12-310000354707us-gaap:AssetPledgedAsCollateralWithRightMember2023-12-310000354707us-gaap:AssetPledgedAsCollateralWithRightMember2022-12-310000354707he:Residential1To4FamilyPortfolioSegmentMemberhe:RealEstatePortfolioSegmentMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberhe:ResidentialLandPortfolioSegmentMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:ConstructionLoansMember2022-12-310000354707he:ResidentialConstructionPortfolioSegmentMemberhe:RealEstatePortfolioSegmentMember2022-12-310000354707us-gaap:CommercialPortfolioSegmentMember2022-12-310000354707us-gaap:ConsumerPortfolioSegmentMember2022-12-310000354707he:Residential1To4FamilyPortfolioSegmentMemberhe:RealEstatePortfolioSegmentMember2023-01-012023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2023-01-012023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityMember2023-01-012023-12-310000354707he:RealEstatePortfolioSegmentMemberhe:ResidentialLandPortfolioSegmentMember2023-01-012023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:ConstructionLoansMember2023-01-012023-12-310000354707he:ResidentialConstructionPortfolioSegmentMemberhe:RealEstatePortfolioSegmentMember2023-01-012023-12-310000354707us-gaap:CommercialPortfolioSegmentMember2023-01-012023-12-310000354707us-gaap:ConsumerPortfolioSegmentMember2023-01-012023-12-310000354707he:Residential1To4FamilyPortfolioSegmentMemberhe:RealEstatePortfolioSegmentMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberhe:ResidentialLandPortfolioSegmentMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:ConstructionLoansMember2023-12-310000354707he:ResidentialConstructionPortfolioSegmentMemberhe:RealEstatePortfolioSegmentMember2023-12-310000354707us-gaap:CommercialPortfolioSegmentMember2023-12-310000354707us-gaap:ConsumerPortfolioSegmentMember2023-12-310000354707he:Residential1To4FamilyPortfolioSegmentMemberhe:RealEstatePortfolioSegmentMember2021-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2021-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityMember2021-12-310000354707he:RealEstatePortfolioSegmentMemberhe:ResidentialLandPortfolioSegmentMember2021-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:ConstructionLoansMember2021-12-310000354707he:ResidentialConstructionPortfolioSegmentMemberhe:RealEstatePortfolioSegmentMember2021-12-310000354707us-gaap:CommercialPortfolioSegmentMember2021-12-310000354707us-gaap:ConsumerPortfolioSegmentMember2021-12-310000354707he:Residential1To4FamilyPortfolioSegmentMemberhe:RealEstatePortfolioSegmentMember2022-01-012022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2022-01-012022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityMember2022-01-012022-12-310000354707he:RealEstatePortfolioSegmentMemberhe:ResidentialLandPortfolioSegmentMember2022-01-012022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:ConstructionLoansMember2022-01-012022-12-310000354707he:ResidentialConstructionPortfolioSegmentMemberhe:RealEstatePortfolioSegmentMember2022-01-012022-12-310000354707us-gaap:CommercialPortfolioSegmentMember2022-01-012022-12-310000354707us-gaap:ConsumerPortfolioSegmentMember2022-01-012022-12-310000354707he:Residential1To4FamilyPortfolioSegmentMemberhe:RealEstatePortfolioSegmentMember2020-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2020-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityMember2020-12-310000354707he:RealEstatePortfolioSegmentMemberhe:ResidentialLandPortfolioSegmentMember2020-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:ConstructionLoansMember2020-12-310000354707he:ResidentialConstructionPortfolioSegmentMemberhe:RealEstatePortfolioSegmentMember2020-12-310000354707us-gaap:CommercialPortfolioSegmentMember2020-12-310000354707us-gaap:ConsumerPortfolioSegmentMember2020-12-310000354707he:Residential1To4FamilyPortfolioSegmentMemberhe:RealEstatePortfolioSegmentMember2021-01-012021-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2021-01-012021-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityMember2021-01-012021-12-310000354707he:RealEstatePortfolioSegmentMemberhe:ResidentialLandPortfolioSegmentMember2021-01-012021-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:ConstructionLoansMember2021-01-012021-12-310000354707he:ResidentialConstructionPortfolioSegmentMemberhe:RealEstatePortfolioSegmentMember2021-01-012021-12-310000354707us-gaap:CommercialPortfolioSegmentMember2021-01-012021-12-310000354707us-gaap:ConsumerPortfolioSegmentMember2021-01-012021-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityLoanMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberhe:CommercialConstructionLoanMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityLoanMember2023-01-012023-12-310000354707he:RealEstatePortfolioSegmentMemberhe:CommercialConstructionLoanMember2023-01-012023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityLoanMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberhe:CommercialConstructionLoanMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityLoanMember2021-12-310000354707he:RealEstatePortfolioSegmentMemberhe:CommercialConstructionLoanMember2021-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityLoanMember2022-01-012022-12-310000354707he:RealEstatePortfolioSegmentMemberhe:CommercialConstructionLoanMember2022-01-012022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityLoanMember2020-12-310000354707he:RealEstatePortfolioSegmentMemberhe:CommercialConstructionLoanMember2020-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityLoanMember2021-01-012021-12-310000354707he:RealEstatePortfolioSegmentMemberhe:CommercialConstructionLoanMember2021-01-012021-12-310000354707us-gaap:FinancingReceivables1To29DaysPastDueMemberhe:Residential14FamilyMemberhe:RealEstatePortfolioSegmentMember2023-12-310000354707he:Residential14FamilyMemberhe:RealEstatePortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2023-12-310000354707us-gaap:FinancingReceivables60To89DaysPastDueMemberhe:Residential14FamilyMemberhe:RealEstatePortfolioSegmentMember2023-12-310000354707he:Residential14FamilyMemberhe:RealEstatePortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2023-12-310000354707he:Residential14FamilyMemberhe:RealEstatePortfolioSegmentMember2023-12-310000354707he:Residential14FamilyMemberhe:RealEstatePortfolioSegmentMember2023-01-012023-12-310000354707us-gaap:FinancingReceivables1To29DaysPastDueMemberhe:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityLoanMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityLoanMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2023-12-310000354707us-gaap:FinancingReceivables60To89DaysPastDueMemberhe:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityLoanMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberus-gaap:HomeEquityLoanMember2023-12-310000354707us-gaap:FinancingReceivables1To29DaysPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:ResidentialLandMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberhe:ResidentialLandMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2023-12-310000354707us-gaap:FinancingReceivables60To89DaysPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:ResidentialLandMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberhe:ResidentialLandMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberhe:ResidentialLandMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberhe:ResidentialLandMember2023-01-012023-12-310000354707us-gaap:FinancingReceivables1To29DaysPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:ResidentialConstructionLoanMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberhe:ResidentialConstructionLoanMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2023-12-310000354707us-gaap:FinancingReceivables60To89DaysPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:ResidentialConstructionLoanMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberhe:ResidentialConstructionLoanMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberhe:ResidentialConstructionLoanMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberhe:ResidentialConstructionLoanMember2023-01-012023-12-310000354707us-gaap:FinancingReceivables1To29DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2023-12-310000354707us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2023-12-310000354707us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2023-12-310000354707us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstateMemberus-gaap:PassMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstateMemberus-gaap:SpecialMentionMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstateMemberus-gaap:SubstandardMember2023-12-310000354707us-gaap:DoubtfulMemberhe:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstateMember2023-12-310000354707us-gaap:CommercialRealEstateMemberhe:RealEstatePortfolioSegmentMember2023-12-310000354707us-gaap:CommercialRealEstateMemberhe:RealEstatePortfolioSegmentMember2023-01-012023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:PassMemberhe:CommercialConstructionLoanMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:SpecialMentionMemberhe:CommercialConstructionLoanMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberhe:CommercialConstructionLoanMemberus-gaap:SubstandardMember2023-12-310000354707us-gaap:DoubtfulMemberhe:RealEstatePortfolioSegmentMemberhe:CommercialConstructionLoanMember2023-12-310000354707us-gaap:CommercialPortfolioSegmentMemberus-gaap:PassMember2023-12-310000354707us-gaap:SpecialMentionMemberus-gaap:CommercialPortfolioSegmentMember2023-12-310000354707us-gaap:CommercialPortfolioSegmentMemberus-gaap:SubstandardMember2023-12-310000354707us-gaap:DoubtfulMemberus-gaap:CommercialPortfolioSegmentMember2023-12-310000354707us-gaap:FinancingReceivables1To29DaysPastDueMemberhe:Residential14FamilyMemberhe:RealEstatePortfolioSegmentMember2022-12-310000354707he:Residential14FamilyMemberhe:RealEstatePortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-12-310000354707us-gaap:FinancingReceivables60To89DaysPastDueMemberhe:Residential14FamilyMemberhe:RealEstatePortfolioSegmentMember2022-12-310000354707he:Residential14FamilyMemberhe:RealEstatePortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2022-12-310000354707he:Residential14FamilyMemberhe:RealEstatePortfolioSegmentMember2022-12-310000354707us-gaap:FinancingReceivables1To29DaysPastDueMemberhe:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityLoanMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityLoanMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-12-310000354707us-gaap:FinancingReceivables60To89DaysPastDueMemberhe:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityLoanMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberus-gaap:HomeEquityLoanMember2022-12-310000354707us-gaap:FinancingReceivables1To29DaysPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:ResidentialLandMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberhe:ResidentialLandMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-12-310000354707us-gaap:FinancingReceivables60To89DaysPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:ResidentialLandMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberhe:ResidentialLandMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberhe:ResidentialLandMember2022-12-310000354707us-gaap:FinancingReceivables1To29DaysPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:ResidentialConstructionLoanMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberhe:ResidentialConstructionLoanMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-12-310000354707us-gaap:FinancingReceivables60To89DaysPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:ResidentialConstructionLoanMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberhe:ResidentialConstructionLoanMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberhe:ResidentialConstructionLoanMember2022-12-310000354707us-gaap:FinancingReceivables1To29DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2022-12-310000354707us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-12-310000354707us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2022-12-310000354707us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstateMemberus-gaap:PassMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstateMemberus-gaap:SpecialMentionMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstateMemberus-gaap:SubstandardMember2022-12-310000354707us-gaap:DoubtfulMemberhe:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstateMember2022-12-310000354707us-gaap:CommercialRealEstateMemberhe:RealEstatePortfolioSegmentMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:PassMemberhe:CommercialConstructionLoanMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:SpecialMentionMemberhe:CommercialConstructionLoanMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberhe:CommercialConstructionLoanMemberus-gaap:SubstandardMember2022-12-310000354707us-gaap:DoubtfulMemberhe:RealEstatePortfolioSegmentMemberhe:CommercialConstructionLoanMember2022-12-310000354707us-gaap:CommercialPortfolioSegmentMemberus-gaap:PassMember2022-12-310000354707us-gaap:SpecialMentionMemberus-gaap:CommercialPortfolioSegmentMember2022-12-310000354707us-gaap:CommercialPortfolioSegmentMemberus-gaap:SubstandardMember2022-12-310000354707us-gaap:DoubtfulMemberus-gaap:CommercialPortfolioSegmentMember2022-12-310000354707us-gaap:HomeEquityLoanMember2023-01-012023-12-310000354707he:Residential14FamilyMemberus-gaap:FinancialAssetPastDueMemberhe:RealEstatePortfolioSegmentMember2023-12-310000354707us-gaap:FinancialAssetNotPastDueMemberhe:Residential14FamilyMemberhe:RealEstatePortfolioSegmentMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstateMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2023-12-310000354707us-gaap:FinancingReceivables60To89DaysPastDueMemberhe:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstateMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstateMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2023-12-310000354707us-gaap:FinancialAssetPastDueMemberhe:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstateMember2023-12-310000354707us-gaap:FinancialAssetNotPastDueMemberhe:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstateMember2023-12-310000354707us-gaap:FinancialAssetPastDueMemberhe:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityLoanMember2023-12-310000354707us-gaap:FinancialAssetNotPastDueMemberhe:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityLoanMember2023-12-310000354707us-gaap:FinancialAssetPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:ResidentialLandMember2023-12-310000354707us-gaap:FinancialAssetNotPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:ResidentialLandMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMemberhe:CommercialConstructionLoanMember2023-12-310000354707us-gaap:FinancingReceivables60To89DaysPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:CommercialConstructionLoanMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberhe:CommercialConstructionLoanMember2023-12-310000354707us-gaap:FinancialAssetPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:CommercialConstructionLoanMember2023-12-310000354707us-gaap:FinancialAssetNotPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:CommercialConstructionLoanMember2023-12-310000354707us-gaap:FinancialAssetPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:ResidentialConstructionLoanMember2023-12-310000354707us-gaap:FinancialAssetNotPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:ResidentialConstructionLoanMember2023-12-310000354707us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2023-12-310000354707us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2023-12-310000354707us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2023-12-310000354707us-gaap:FinancialAssetPastDueMemberus-gaap:CommercialPortfolioSegmentMember2023-12-310000354707us-gaap:FinancialAssetNotPastDueMemberus-gaap:CommercialPortfolioSegmentMember2023-12-310000354707us-gaap:FinancialAssetPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2023-12-310000354707us-gaap:FinancialAssetNotPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2023-12-310000354707us-gaap:FinancingReceivables30To59DaysPastDueMember2023-12-310000354707us-gaap:FinancingReceivables60To89DaysPastDueMember2023-12-310000354707us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2023-12-310000354707us-gaap:FinancialAssetPastDueMember2023-12-310000354707us-gaap:FinancialAssetNotPastDueMember2023-12-310000354707he:Residential14FamilyMemberus-gaap:FinancialAssetPastDueMemberhe:RealEstatePortfolioSegmentMember2022-12-310000354707us-gaap:FinancialAssetNotPastDueMemberhe:Residential14FamilyMemberhe:RealEstatePortfolioSegmentMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstateMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-12-310000354707us-gaap:FinancingReceivables60To89DaysPastDueMemberhe:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstateMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstateMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2022-12-310000354707us-gaap:FinancialAssetPastDueMemberhe:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstateMember2022-12-310000354707us-gaap:FinancialAssetNotPastDueMemberhe:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstateMember2022-12-310000354707us-gaap:FinancialAssetPastDueMemberhe:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityLoanMember2022-12-310000354707us-gaap:FinancialAssetNotPastDueMemberhe:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityLoanMember2022-12-310000354707us-gaap:FinancialAssetPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:ResidentialLandMember2022-12-310000354707us-gaap:FinancialAssetNotPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:ResidentialLandMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMemberhe:CommercialConstructionLoanMember2022-12-310000354707us-gaap:FinancingReceivables60To89DaysPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:CommercialConstructionLoanMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberhe:CommercialConstructionLoanMember2022-12-310000354707us-gaap:FinancialAssetPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:CommercialConstructionLoanMember2022-12-310000354707us-gaap:FinancialAssetNotPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:CommercialConstructionLoanMember2022-12-310000354707us-gaap:FinancialAssetPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:ResidentialConstructionLoanMember2022-12-310000354707us-gaap:FinancialAssetNotPastDueMemberhe:RealEstatePortfolioSegmentMemberhe:ResidentialConstructionLoanMember2022-12-310000354707us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-12-310000354707us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2022-12-310000354707us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2022-12-310000354707us-gaap:FinancialAssetPastDueMemberus-gaap:CommercialPortfolioSegmentMember2022-12-310000354707us-gaap:FinancialAssetNotPastDueMemberus-gaap:CommercialPortfolioSegmentMember2022-12-310000354707us-gaap:FinancialAssetPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2022-12-310000354707us-gaap:FinancialAssetNotPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2022-12-310000354707us-gaap:FinancingReceivables30To59DaysPastDueMember2022-12-310000354707us-gaap:FinancingReceivables60To89DaysPastDueMember2022-12-310000354707us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2022-12-310000354707us-gaap:FinancialAssetPastDueMember2022-12-310000354707us-gaap:FinancialAssetNotPastDueMember2022-12-310000354707he:Residential14FamilyMemberhe:RealEstatePortfolioSegmentMember2022-01-012022-12-310000354707us-gaap:CommercialRealEstateMemberhe:RealEstatePortfolioSegmentMember2022-01-012022-12-310000354707he:RealEstatePortfolioSegmentMemberhe:ResidentialLandMember2022-01-012022-12-310000354707he:RealEstatePortfolioSegmentMemberhe:ResidentialConstructionLoanMember2022-01-012022-12-310000354707he:Residential1To4FamilyPortfolioSegmentMember2022-01-012022-12-310000354707us-gaap:CommercialRealEstatePortfolioSegmentMember2022-01-012022-12-310000354707us-gaap:HomeEquityMember2022-01-012022-12-310000354707he:ResidentialLandPortfolioSegmentMember2022-01-012022-12-310000354707us-gaap:ConstructionLoansMember2022-01-012022-12-310000354707he:ResidentialConstructionPortfolioSegmentMember2022-01-012022-12-310000354707us-gaap:CommercialLoanMember2022-01-012022-12-310000354707us-gaap:ConsumerLoanMember2022-01-012022-12-310000354707he:Residential1To4FamilyPortfolioSegmentMember2021-01-012021-12-310000354707us-gaap:CommercialRealEstatePortfolioSegmentMember2021-01-012021-12-310000354707us-gaap:HomeEquityMember2021-01-012021-12-310000354707he:ResidentialLandPortfolioSegmentMember2021-01-012021-12-310000354707us-gaap:ConstructionLoansMember2021-01-012021-12-310000354707he:ResidentialConstructionPortfolioSegmentMember2021-01-012021-12-310000354707us-gaap:CommercialLoanMember2021-01-012021-12-310000354707us-gaap:ConsumerLoanMember2021-01-012021-12-310000354707he:FinancingReceivableTroubledDebtRestructuringsRealEstateLoansMember2022-01-012022-12-310000354707he:FinancingReceivableTroubledDebtRestructuringsRealEstateLoansMember2023-01-012023-12-310000354707he:FinancingReceivableTroubledDebtRestructuringsRealEstateLoansMember2021-01-012021-12-310000354707us-gaap:ResidentialRealEstateMemberhe:Residential14FamilyMemberhe:RealEstatePortfolioSegmentMember2023-12-310000354707us-gaap:ResidentialRealEstateMemberhe:Residential14FamilyMemberhe:RealEstatePortfolioSegmentMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstateMemberus-gaap:CommercialRealEstateMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:CommercialRealEstateMemberus-gaap:CommercialRealEstateMember2022-12-310000354707us-gaap:ResidentialRealEstateMemberhe:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityLoanMember2023-12-310000354707us-gaap:ResidentialRealEstateMemberhe:RealEstatePortfolioSegmentMemberus-gaap:HomeEquityLoanMember2022-12-310000354707us-gaap:ResidentialRealEstateMemberhe:RealEstatePortfolioSegmentMemberhe:ResidentialLandMember2023-12-310000354707us-gaap:ResidentialRealEstateMemberhe:RealEstatePortfolioSegmentMemberhe:ResidentialLandMember2022-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:CollateralPledgedMember2023-12-310000354707he:RealEstatePortfolioSegmentMemberus-gaap:CollateralPledgedMember2022-12-310000354707he:BusinessAssetsMemberus-gaap:CommercialPortfolioSegmentMember2023-12-310000354707he:BusinessAssetsMemberus-gaap:CommercialPortfolioSegmentMember2022-12-310000354707us-gaap:CollateralPledgedMember2023-12-310000354707us-gaap:CollateralPledgedMember2022-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:ResidentialMortgageMember2023-01-012023-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:ResidentialMortgageMember2022-01-012022-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:ResidentialMortgageMember2021-01-012021-12-31he:loan0000354707us-gaap:ServicingContractsMemberhe:AmericanSavingsBankFSBMember2023-12-310000354707us-gaap:ServicingContractsMemberhe:AmericanSavingsBankFSBMember2022-12-310000354707us-gaap:ServicingContractsMemberhe:AmericanSavingsBankFSBMember2021-12-310000354707us-gaap:ServicingContractsMemberhe:AmericanSavingsBankFSBMember2020-12-310000354707us-gaap:ServicingContractsMemberhe:AmericanSavingsBankFSBMember2023-01-012023-12-310000354707us-gaap:ServicingContractsMemberhe:AmericanSavingsBankFSBMember2022-01-012022-12-310000354707us-gaap:ServicingContractsMemberhe:AmericanSavingsBankFSBMember2021-01-012021-12-310000354707us-gaap:ServicingContractsMemberhe:AmericanSavingsBankFSBMemberus-gaap:MeasurementInputDiscountRateMember2023-12-310000354707us-gaap:ServicingContractsMemberhe:AmericanSavingsBankFSBMemberus-gaap:MeasurementInputDiscountRateMember2022-12-310000354707us-gaap:ServicingContractsMemberhe:AmericanSavingsBankFSBMemberus-gaap:MeasurementInputPrepaymentRateMember2023-12-310000354707us-gaap:ServicingContractsMemberhe:AmericanSavingsBankFSBMemberus-gaap:MeasurementInputPrepaymentRateMember2022-12-310000354707us-gaap:ServicingContractsMember2023-12-310000354707us-gaap:ServicingContractsMember2022-12-310000354707he:CommercialAccountHoldersMember2023-12-310000354707he:CommercialAccountHoldersMember2022-12-310000354707he:IdenticalSecuritiesMember2023-12-310000354707he:IdenticalSecuritiesMember2022-12-310000354707he:IdenticalSecuritiesMember2021-12-310000354707he:IdenticalSecuritiesMember2023-01-012023-12-310000354707he:IdenticalSecuritiesMember2022-01-012022-12-310000354707he:IdenticalSecuritiesMember2021-01-012021-12-310000354707us-gaap:MaturityOvernightMember2023-12-310000354707he:USGovernmentAgenciesDebtSecuritiesAndMortgageBackedSecuritiesMemberus-gaap:MaturityOvernightMember2023-12-310000354707us-gaap:MaturityOvernightMember2022-12-310000354707he:USGovernmentAgenciesDebtSecuritiesAndMortgageBackedSecuritiesMemberus-gaap:MaturityOvernightMember2022-12-310000354707us-gaap:MaturityUpTo30DaysMember2023-12-310000354707he:USGovernmentAgenciesDebtSecuritiesAndMortgageBackedSecuritiesMemberus-gaap:MaturityUpTo30DaysMember2023-12-310000354707us-gaap:MaturityUpTo30DaysMember2022-12-310000354707he:USGovernmentAgenciesDebtSecuritiesAndMortgageBackedSecuritiesMemberus-gaap:MaturityUpTo30DaysMember2022-12-310000354707us-gaap:Maturity30To90DaysMember2023-12-310000354707he:USGovernmentAgenciesDebtSecuritiesAndMortgageBackedSecuritiesMemberus-gaap:Maturity30To90DaysMember2023-12-310000354707us-gaap:Maturity30To90DaysMember2022-12-310000354707he:USGovernmentAgenciesDebtSecuritiesAndMortgageBackedSecuritiesMemberus-gaap:Maturity30To90DaysMember2022-12-310000354707us-gaap:MaturityOver90DaysMember2023-12-310000354707he:USGovernmentAgenciesDebtSecuritiesAndMortgageBackedSecuritiesMemberus-gaap:MaturityOver90DaysMember2023-12-310000354707us-gaap:MaturityOver90DaysMember2022-12-310000354707he:USGovernmentAgenciesDebtSecuritiesAndMortgageBackedSecuritiesMemberus-gaap:MaturityOver90DaysMember2022-12-310000354707he:USGovernmentAgenciesDebtSecuritiesAndMortgageBackedSecuritiesMember2023-12-310000354707he:USGovernmentAgenciesDebtSecuritiesAndMortgageBackedSecuritiesMember2022-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:FederalReserveBankAdvancesMember2023-12-310000354707srt:ParentCompanyMembersrt:MaximumMember1988-01-011988-12-310000354707srt:ParentCompanyMembersrt:MaximumMember2023-01-012023-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:RelatedPartyMemberhe:BankingSegmentMember2023-01-012023-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:RelatedPartyMemberhe:BankingSegmentMember2022-01-012022-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:RelatedPartyMemberhe:BankingSegmentMember2021-01-012021-12-310000354707us-gaap:InterestRateLockCommitmentsMember2023-12-310000354707us-gaap:InterestRateLockCommitmentsMember2022-12-310000354707us-gaap:ForwardContractsMember2023-12-310000354707us-gaap:ForwardContractsMember2022-12-310000354707us-gaap:InterestRateLockCommitmentsMemberus-gaap:NondesignatedMember2023-12-310000354707us-gaap:InterestRateLockCommitmentsMemberus-gaap:NondesignatedMember2022-12-310000354707us-gaap:ForwardContractsMemberus-gaap:NondesignatedMember2023-12-310000354707us-gaap:ForwardContractsMemberus-gaap:NondesignatedMember2022-12-310000354707us-gaap:NondesignatedMember2023-12-310000354707us-gaap:NondesignatedMember2022-12-310000354707us-gaap:InterestRateLockCommitmentsMemberus-gaap:NondesignatedMember2023-01-012023-12-310000354707us-gaap:InterestRateLockCommitmentsMemberus-gaap:NondesignatedMember2022-01-012022-12-310000354707us-gaap:InterestRateLockCommitmentsMemberus-gaap:NondesignatedMember2021-01-012021-12-310000354707us-gaap:ForwardContractsMemberus-gaap:NondesignatedMember2023-01-012023-12-310000354707us-gaap:ForwardContractsMemberus-gaap:NondesignatedMember2022-01-012022-12-310000354707us-gaap:ForwardContractsMemberus-gaap:NondesignatedMember2021-01-012021-12-310000354707us-gaap:HomeEquityMember2023-12-310000354707us-gaap:HomeEquityMember2022-12-310000354707us-gaap:CommercialRealEstateMember2023-12-310000354707us-gaap:CommercialRealEstateMember2022-12-310000354707us-gaap:ConsumerLoanMember2023-12-310000354707us-gaap:ConsumerLoanMember2022-12-310000354707he:Residential1To4FamilyPortfolioSegmentMember2023-12-310000354707he:Residential1To4FamilyPortfolioSegmentMember2022-12-310000354707he:CommercialandStandbyLettersofCreditMember2023-12-310000354707he:CommercialandStandbyLettersofCreditMember2022-12-310000354707us-gaap:ReserveForOffBalanceSheetActivitiesMember2023-12-310000354707us-gaap:ReserveForOffBalanceSheetActivitiesMember2022-12-310000354707he:AmericanSavingsBankFSBMember2021-12-310000354707us-gaap:CommercialPaperMember2023-12-310000354707us-gaap:CommercialPaperMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:CommercialPaperMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:CommercialPaperMember2022-12-310000354707us-gaap:LetterOfCreditMemberhe:MauoLLCAndHamakuaEnergyLLCMember2023-01-012023-12-31he:instrument0000354707us-gaap:LetterOfCreditMemberhe:MauoLLCAndHamakuaEnergyLLCMember2022-01-012022-12-310000354707us-gaap:LetterOfCreditMemberhe:MauoLLCAndHamakuaEnergyLLCMember2023-12-310000354707us-gaap:LetterOfCreditMemberhe:MauoLLCAndHamakuaEnergyLLCMember2022-12-310000354707he:HawaiianElectricParentMemberhe:TermLoanMember2022-10-200000354707he:HawaiianElectricParentMemberhe:TermLoanMember2022-12-280000354707he:HawaiianElectricParentMemberhe:TermLoanMember2023-03-310000354707he:HawaiianElectricParentMemberhe:SecuredOvernightFinancingRateSOFRMemberhe:TermLoanMember2023-03-310000354707he:CreditFacilitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2021-05-14he:institution0000354707he:HEIFacilityMember2021-05-140000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:HawaiianElectricFacilityMember2021-05-140000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:HawaiianElectricFacilityMember2022-02-18he:extensionOption0000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:HawaiianElectricFacilityMember2022-02-182022-02-180000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:HawaiianElectricFacilityMember2023-05-142023-05-140000354707he:CreditFacilitiesMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-05-140000354707he:HEIFacilityMember2023-05-140000354707he:HawaiianElectricFacilityMember2023-05-140000354707he:HEIFacilityMember2023-08-150000354707he:HawaiianElectricFacilityMember2023-11-012023-11-010000354707us-gaap:LineOfCreditMemberhe:SecuredOvernightFinancingRateSOFRMemberhe:CreditFacilitiesEffectiveJuly2017Member2021-05-142021-05-140000354707he:HEIFacilityMember2021-05-142021-05-140000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:CreditFacilitiesEffectiveJuly2017Member2021-05-140000354707srt:MaximumMemberhe:HEIFacilityMember2023-12-310000354707he:HEIFacilityMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707he:SpecialPurposeRevenueBondsAndSeniorNotesMember2023-12-310000354707he:SpecialPurposeRevenueBondsAndSeniorNotesMember2022-12-310000354707us-gaap:SeniorNotesMemberhe:Series2013ASeniorNotes3.99PercentDue2023Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:Series2013ASeniorNotes3.99PercentDue2023Member2022-12-310000354707he:HEISeniorNotesDue20254.58Memberus-gaap:SeniorNotesMember2023-12-310000354707he:HEISeniorNotesDue20254.58Memberus-gaap:SeniorNotesMember2022-12-310000354707us-gaap:SeniorNotesMemberhe:HEISeniorNotesDue20284.72Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:HEISeniorNotesDue20284.72Member2022-12-310000354707us-gaap:SeniorNotesMemberhe:SeniorNotes282PercentDue2028Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:SeniorNotes282PercentDue2028Member2022-12-310000354707us-gaap:SeniorNotesMemberhe:SeniorNotes248PercentDue2028Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:SeniorNotes248PercentDue2028Member2022-12-310000354707us-gaap:SeniorNotesMemberhe:SeniorNotes604PercentDue2028Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:SeniorNotes604PercentDue2028Member2022-12-310000354707us-gaap:SeniorNotesMemberhe:SeniorNotes298PercentDue2030Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:SeniorNotes298PercentDue2030Member2022-12-310000354707us-gaap:SeniorNotesMemberhe:SeniorNotes315PercentDue2031Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:SeniorNotes315PercentDue2031Member2022-12-310000354707us-gaap:SeniorNotesMemberhe:SeniorNotes278PercentDue2031Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:SeniorNotes278PercentDue2031Member2022-12-310000354707he:SeniorNotes298PercentDue2032Memberus-gaap:SeniorNotesMember2023-12-310000354707he:SeniorNotes298PercentDue2032Memberus-gaap:SeniorNotesMember2022-12-310000354707us-gaap:SeniorNotesMemberhe:SeniorNotes543PercentDue2032Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:SeniorNotes543PercentDue2032Member2022-12-310000354707he:SeniorNotes610PercentDue2033Memberus-gaap:SeniorNotesMember2023-12-310000354707he:SeniorNotes610PercentDue2033Memberus-gaap:SeniorNotesMember2022-12-310000354707us-gaap:SeniorNotesMemberhe:SeniorNotes543PercentDue2034Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:SeniorNotes543PercentDue2034Member2022-12-310000354707us-gaap:SeniorNotesMemberhe:SeniorNotes374PercentDue2051Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:SeniorNotes374PercentDue2051Member2022-12-310000354707us-gaap:SeniorNotesMemberhe:SeniorNotes394PercentDue2052Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:SeniorNotes394PercentDue2052Member2022-12-310000354707us-gaap:SeniorNotesMemberhe:HamakuaEnergyLLCLoanAt4.02Due2030Member2023-12-310000354707us-gaap:SeniorNotesMemberhe:HamakuaEnergyLLCLoanAt4.02Due2030Member2022-12-310000354707he:SecuredOvernightFinancingRateSOFRMemberhe:MauoUnsecuredLoanDue2024Memberus-gaap:UnsecuredDebtMember2023-01-012023-12-310000354707he:MauoUnsecuredLoanDue2024Memberus-gaap:UnsecuredDebtMember2023-12-310000354707he:MauoUnsecuredLoanDue2024Memberus-gaap:UnsecuredDebtMember2022-12-310000354707he:TermLoanMemberhe:Mau4.91NonRecourseLoanDue2034To2035Member2023-12-310000354707he:TermLoanMemberhe:Mau4.91NonRecourseLoanDue2034To2035Member2022-12-310000354707he:NonRecourseTermLoanAgreementMemberhe:TermLoanMember2023-12-310000354707he:NonRecourseTermLoanAgreementMemberhe:TermLoanMember2022-12-310000354707he:TermLoanMemberhe:Mahipapa190NonRecourseLoanDue2034To2036Member2023-12-310000354707he:TermLoanMemberhe:Mahipapa190NonRecourseLoanDue2034To2036Member2022-12-310000354707he:Mahipapa5625NonRecourseUnsecuredLoanDue2027Memberhe:TermLoanMember2023-12-310000354707he:Mahipapa5625NonRecourseUnsecuredLoanDue2027Memberhe:TermLoanMember2022-12-310000354707he:SecuredOvernightFinancingRateSOFRMemberhe:RevolvingCreditFacilityAt180Due2026To2027Memberus-gaap:LineOfCreditMember2023-01-012023-12-310000354707he:RevolvingCreditFacilityAt180Due2026To2027Memberus-gaap:LineOfCreditMember2023-12-310000354707he:RevolvingCreditFacilityAt180Due2026To2027Memberus-gaap:LineOfCreditMember2022-12-310000354707he:MauoUnsecuredLoanDue2024Memberus-gaap:UnsecuredDebtMember2021-12-310000354707he:MauoUnsecuredLoanDue2024Memberhe:SecuredOvernightFinancingRateSOFRExcludingReplacementRateAdjustmentMemberus-gaap:UnsecuredDebtMember2023-07-012023-07-010000354707he:SecuredOvernightFinancingRateSOFRReplacementRateAdjustmentMemberhe:MauoUnsecuredLoanDue2024Memberus-gaap:UnsecuredDebtMember2023-07-012023-07-010000354707he:SecuredOvernightFinancingRateSOFRExcludingSustainabilityMarginAdjustmentMemberhe:RevolvingCreditFacilityAt180Due2026To2027Memberus-gaap:LineOfCreditMember2023-01-012023-12-310000354707he:SecuredOvernightFinancingRateSOFRSustainabilityMarginAdjustmentMemberhe:RevolvingCreditFacilityAt180Due2026To2027Memberus-gaap:LineOfCreditMember2023-01-012023-12-310000354707he:SecuredOvernightFinancingRateSOFRAdditionalAdjustmentMemberhe:RevolvingCreditFacilityAt180Due2026To2027Memberus-gaap:LineOfCreditMember2023-01-012023-12-310000354707us-gaap:SeniorNotesMemberhe:HEIFacilityMember2023-03-160000354707us-gaap:SeniorNotesMemberhe:UnsecuredSeniorNotesSeries2023AMember2023-12-310000354707us-gaap:SeniorNotesMemberhe:UnsecuredSeniorNotesSeries2023BMember2023-12-310000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesSeries2023AMember2023-01-100000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesSeries2023BMember2023-01-100000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberhe:UnsecuredSeniorNotesSeries2023CMember2023-01-100000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricParentMemberhe:UnsecuredSeniorNotesSeries2023AMember2023-01-100000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricParentMemberhe:UnsecuredSeniorNotesSeries2023BMember2023-01-100000354707us-gaap:SeniorNotesMemberhe:HawaiianElectricParentMemberhe:UnsecuredSeniorNotesSeries2023CMember2023-01-100000354707us-gaap:SeniorNotesMemberhe:UnsecuredSeniorNotesSeries2023AMemberhe:HawaiiElectricLightCompanyIncMember2023-01-100000354707us-gaap:SeniorNotesMemberhe:UnsecuredSeniorNotesSeries2023AMemberhe:MauiElectricCompanyLimitedMember2023-01-100000354707us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2020-12-310000354707us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2020-12-310000354707us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2020-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2020-12-310000354707us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2021-01-012021-12-310000354707us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2021-01-012021-12-310000354707us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2021-01-012021-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2021-01-012021-12-310000354707us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2021-12-310000354707us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2021-12-310000354707us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2021-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2021-12-310000354707us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2022-01-012022-12-310000354707us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2022-01-012022-12-310000354707us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2022-01-012022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2022-01-012022-12-310000354707us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2022-12-310000354707us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2022-12-310000354707us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2022-12-310000354707us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2023-01-012023-12-310000354707us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2023-01-012023-12-310000354707us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2023-01-012023-12-310000354707us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2023-12-310000354707us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2023-12-310000354707us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2023-12-310000354707us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2023-01-012023-12-310000354707us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2022-01-012022-12-310000354707us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2021-01-012021-12-310000354707us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberhe:AccumulatedGainLossNetCashFlowHedgeHeldToMaturityParentMember2023-01-012023-12-310000354707us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberhe:AccumulatedGainLossNetCashFlowHedgeHeldToMaturityParentMember2022-01-012022-12-310000354707us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberhe:AccumulatedGainLossNetCashFlowHedgeHeldToMaturityParentMember2021-01-012021-12-310000354707us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2023-01-012023-12-310000354707us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2022-01-012022-12-310000354707us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2021-01-012021-12-310000354707us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember2023-01-012023-12-310000354707us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember2022-01-012022-12-310000354707us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember2021-01-012021-12-310000354707he:AccumulatedDefinedBenefitPlansAdjustmentImpactOfDecisionAndOrdersOfThePublicUtilityCommissionIncludedInRegulatoryAssetsMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2023-01-012023-12-310000354707he:AccumulatedDefinedBenefitPlansAdjustmentImpactOfDecisionAndOrdersOfThePublicUtilityCommissionIncludedInRegulatoryAssetsMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2022-01-012022-12-310000354707he:AccumulatedDefinedBenefitPlansAdjustmentImpactOfDecisionAndOrdersOfThePublicUtilityCommissionIncludedInRegulatoryAssetsMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2021-01-012021-12-310000354707us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2023-01-012023-12-310000354707us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2022-01-012022-12-310000354707us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2021-01-012021-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember2022-01-012022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember2021-01-012021-12-310000354707he:AccumulatedDefinedBenefitPlansAdjustmentImpactOfDecisionAndOrdersOfThePublicUtilityCommissionIncludedInRegulatoryAssetsMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2023-01-012023-12-310000354707he:AccumulatedDefinedBenefitPlansAdjustmentImpactOfDecisionAndOrdersOfThePublicUtilityCommissionIncludedInRegulatoryAssetsMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2022-01-012022-12-310000354707he:AccumulatedDefinedBenefitPlansAdjustmentImpactOfDecisionAndOrdersOfThePublicUtilityCommissionIncludedInRegulatoryAssetsMemberhe:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2021-01-012021-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2022-01-012022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2021-01-012021-12-310000354707srt:MaximumMembersrt:FederalHomeLoanBankOfDesMoinesMember2023-12-3100003547072021-08-310000354707he:WaiawaSolarAESWaikoloaSolarAndKapoleiEnergyStorageProjectsMember2023-12-310000354707he:OtherLeasesMember2023-01-012023-12-310000354707he:PowerPurchaseAgreementsQualifyingAsLeasesMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:OtherLeasesMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:PowerPurchaseAgreementsQualifyingAsLeasesMember2023-01-012023-12-310000354707he:OtherLeasesMember2023-12-310000354707he:PowerPurchaseAgreementsQualifyingAsLeasesMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:OtherLeasesMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:PowerPurchaseAgreementsQualifyingAsLeasesMember2023-12-310000354707he:OtherLeasesMember2022-01-012022-12-310000354707he:PowerPurchaseAgreementsQualifyingAsLeasesMember2022-01-012022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:OtherLeasesMember2022-01-012022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:PowerPurchaseAgreementsQualifyingAsLeasesMember2022-01-012022-12-310000354707he:OtherLeasesMember2022-12-310000354707he:PowerPurchaseAgreementsQualifyingAsLeasesMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:OtherLeasesMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberhe:PowerPurchaseAgreementsQualifyingAsLeasesMember2022-12-310000354707he:ElectricEnergySalesResidentialMemberhe:ElectricUtilitySegmentMember2023-01-012023-12-310000354707he:ElectricEnergySalesResidentialMemberhe:BankingSegmentMember2023-01-012023-12-310000354707us-gaap:AllOtherSegmentsMemberhe:ElectricEnergySalesResidentialMember2023-01-012023-12-310000354707he:ElectricEnergySalesResidentialMember2023-01-012023-12-310000354707he:ElectricEnergySalesResidentialMemberhe:ElectricUtilitySegmentMember2022-01-012022-12-310000354707he:ElectricEnergySalesResidentialMemberhe:BankingSegmentMember2022-01-012022-12-310000354707us-gaap:AllOtherSegmentsMemberhe:ElectricEnergySalesResidentialMember2022-01-012022-12-310000354707he:ElectricEnergySalesResidentialMember2022-01-012022-12-310000354707he:ElectricEnergySalesCommercialMemberhe:ElectricUtilitySegmentMember2023-01-012023-12-310000354707he:ElectricEnergySalesCommercialMemberhe:BankingSegmentMember2023-01-012023-12-310000354707he:ElectricEnergySalesCommercialMemberus-gaap:AllOtherSegmentsMember2023-01-012023-12-310000354707he:ElectricEnergySalesCommercialMember2023-01-012023-12-310000354707he:ElectricEnergySalesCommercialMemberhe:ElectricUtilitySegmentMember2022-01-012022-12-310000354707he:ElectricEnergySalesCommercialMemberhe:BankingSegmentMember2022-01-012022-12-310000354707he:ElectricEnergySalesCommercialMemberus-gaap:AllOtherSegmentsMember2022-01-012022-12-310000354707he:ElectricEnergySalesCommercialMember2022-01-012022-12-310000354707he:ElectricEnergySalesLargeLightAndPowerMemberhe:ElectricUtilitySegmentMember2023-01-012023-12-310000354707he:ElectricEnergySalesLargeLightAndPowerMemberhe:BankingSegmentMember2023-01-012023-12-310000354707us-gaap:AllOtherSegmentsMemberhe:ElectricEnergySalesLargeLightAndPowerMember2023-01-012023-12-310000354707he:ElectricEnergySalesLargeLightAndPowerMember2023-01-012023-12-310000354707he:ElectricEnergySalesLargeLightAndPowerMemberhe:ElectricUtilitySegmentMember2022-01-012022-12-310000354707he:ElectricEnergySalesLargeLightAndPowerMemberhe:BankingSegmentMember2022-01-012022-12-310000354707us-gaap:AllOtherSegmentsMemberhe:ElectricEnergySalesLargeLightAndPowerMember2022-01-012022-12-310000354707he:ElectricEnergySalesLargeLightAndPowerMember2022-01-012022-12-310000354707he:ElectricUtilitySegmentMemberhe:ElectricEnergySalesOtherMember2023-01-012023-12-310000354707he:ElectricEnergySalesOtherMemberhe:BankingSegmentMember2023-01-012023-12-310000354707us-gaap:AllOtherSegmentsMemberhe:ElectricEnergySalesOtherMember2023-01-012023-12-310000354707he:ElectricEnergySalesOtherMember2023-01-012023-12-310000354707he:ElectricUtilitySegmentMemberhe:ElectricEnergySalesOtherMember2022-01-012022-12-310000354707he:ElectricEnergySalesOtherMemberhe:BankingSegmentMember2022-01-012022-12-310000354707us-gaap:AllOtherSegmentsMemberhe:ElectricEnergySalesOtherMember2022-01-012022-12-310000354707he:ElectricEnergySalesOtherMember2022-01-012022-12-310000354707he:BankFeesMemberhe:ElectricUtilitySegmentMember2023-01-012023-12-310000354707he:BankFeesMemberhe:BankingSegmentMember2023-01-012023-12-310000354707he:BankFeesMemberus-gaap:AllOtherSegmentsMember2023-01-012023-12-310000354707he:BankFeesMember2023-01-012023-12-310000354707he:BankFeesMemberhe:ElectricUtilitySegmentMember2022-01-012022-12-310000354707he:BankFeesMemberhe:BankingSegmentMember2022-01-012022-12-310000354707he:BankFeesMemberus-gaap:AllOtherSegmentsMember2022-01-012022-12-310000354707he:BankFeesMember2022-01-012022-12-310000354707he:ElectricUtilitySegmentMemberhe:OtherSalesMember2023-01-012023-12-310000354707he:BankingSegmentMemberhe:OtherSalesMember2023-01-012023-12-310000354707us-gaap:AllOtherSegmentsMemberhe:OtherSalesMember2023-01-012023-12-310000354707he:OtherSalesMember2023-01-012023-12-310000354707he:ElectricUtilitySegmentMemberhe:OtherSalesMember2022-01-012022-12-310000354707he:BankingSegmentMemberhe:OtherSalesMember2022-01-012022-12-310000354707us-gaap:AllOtherSegmentsMemberhe:OtherSalesMember2022-01-012022-12-310000354707he:OtherSalesMember2022-01-012022-12-310000354707he:ElectricUtilitySegmentMemberhe:RegulatoryRevenueMember2023-01-012023-12-310000354707he:RegulatoryRevenueMemberhe:BankingSegmentMember2023-01-012023-12-310000354707us-gaap:AllOtherSegmentsMemberhe:RegulatoryRevenueMember2023-01-012023-12-310000354707he:RegulatoryRevenueMember2023-01-012023-12-310000354707he:ElectricUtilitySegmentMemberhe:RegulatoryRevenueMember2022-01-012022-12-310000354707he:RegulatoryRevenueMemberhe:BankingSegmentMember2022-01-012022-12-310000354707us-gaap:AllOtherSegmentsMemberhe:RegulatoryRevenueMember2022-01-012022-12-310000354707he:RegulatoryRevenueMember2022-01-012022-12-310000354707he:BankInterestAndDividendIncomeMemberhe:ElectricUtilitySegmentMember2023-01-012023-12-310000354707he:BankInterestAndDividendIncomeMemberhe:BankingSegmentMember2023-01-012023-12-310000354707us-gaap:AllOtherSegmentsMemberhe:BankInterestAndDividendIncomeMember2023-01-012023-12-310000354707he:BankInterestAndDividendIncomeMember2023-01-012023-12-310000354707he:BankInterestAndDividendIncomeMemberhe:ElectricUtilitySegmentMember2022-01-012022-12-310000354707he:BankInterestAndDividendIncomeMemberhe:BankingSegmentMember2022-01-012022-12-310000354707us-gaap:AllOtherSegmentsMemberhe:BankInterestAndDividendIncomeMember2022-01-012022-12-310000354707he:BankInterestAndDividendIncomeMember2022-01-012022-12-310000354707he:ElectricUtilitySegmentMemberhe:OtherBankNoninterestIncomeMember2023-01-012023-12-310000354707he:OtherBankNoninterestIncomeMemberhe:BankingSegmentMember2023-01-012023-12-310000354707us-gaap:AllOtherSegmentsMemberhe:OtherBankNoninterestIncomeMember2023-01-012023-12-310000354707he:OtherBankNoninterestIncomeMember2023-01-012023-12-310000354707he:ElectricUtilitySegmentMemberhe:OtherBankNoninterestIncomeMember2022-01-012022-12-310000354707he:OtherBankNoninterestIncomeMemberhe:BankingSegmentMember2022-01-012022-12-310000354707us-gaap:AllOtherSegmentsMemberhe:OtherBankNoninterestIncomeMember2022-01-012022-12-310000354707he:OtherBankNoninterestIncomeMember2022-01-012022-12-310000354707he:ElectricUtilitySegmentMemberus-gaap:ProductAndServiceOtherMember2023-01-012023-12-310000354707us-gaap:ProductAndServiceOtherMemberhe:BankingSegmentMember2023-01-012023-12-310000354707us-gaap:AllOtherSegmentsMemberus-gaap:ProductAndServiceOtherMember2023-01-012023-12-310000354707us-gaap:ProductAndServiceOtherMember2023-01-012023-12-310000354707he:ElectricUtilitySegmentMemberus-gaap:ProductAndServiceOtherMember2022-01-012022-12-310000354707us-gaap:ProductAndServiceOtherMemberhe:BankingSegmentMember2022-01-012022-12-310000354707us-gaap:AllOtherSegmentsMemberus-gaap:ProductAndServiceOtherMember2022-01-012022-12-310000354707us-gaap:ProductAndServiceOtherMember2022-01-012022-12-310000354707us-gaap:TransferredAtPointInTimeMemberhe:ElectricUtilitySegmentMember2023-01-012023-12-310000354707us-gaap:TransferredAtPointInTimeMemberhe:BankingSegmentMember2023-01-012023-12-310000354707us-gaap:TransferredAtPointInTimeMemberus-gaap:AllOtherSegmentsMember2023-01-012023-12-310000354707us-gaap:TransferredAtPointInTimeMember2023-01-012023-12-310000354707us-gaap:TransferredAtPointInTimeMemberhe:ElectricUtilitySegmentMember2022-01-012022-12-310000354707us-gaap:TransferredAtPointInTimeMemberhe:BankingSegmentMember2022-01-012022-12-310000354707us-gaap:TransferredAtPointInTimeMemberus-gaap:AllOtherSegmentsMember2022-01-012022-12-310000354707us-gaap:TransferredAtPointInTimeMember2022-01-012022-12-310000354707he:ElectricUtilitySegmentMemberus-gaap:TransferredOverTimeMember2023-01-012023-12-310000354707us-gaap:TransferredOverTimeMemberhe:BankingSegmentMember2023-01-012023-12-310000354707us-gaap:AllOtherSegmentsMemberus-gaap:TransferredOverTimeMember2023-01-012023-12-310000354707us-gaap:TransferredOverTimeMember2023-01-012023-12-310000354707he:ElectricUtilitySegmentMemberus-gaap:TransferredOverTimeMember2022-01-012022-12-310000354707us-gaap:TransferredOverTimeMemberhe:BankingSegmentMember2022-01-012022-12-310000354707us-gaap:AllOtherSegmentsMemberus-gaap:TransferredOverTimeMember2022-01-012022-12-310000354707us-gaap:TransferredOverTimeMember2022-01-012022-12-310000354707us-gaap:PensionPlansDefinedBenefitMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2022-12-310000354707us-gaap:PensionPlansDefinedBenefitMember2021-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2021-12-310000354707us-gaap:PensionPlansDefinedBenefitMember2023-01-012023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2023-01-012023-12-310000354707us-gaap:PensionPlansDefinedBenefitMember2022-01-012022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2022-01-012022-12-310000354707us-gaap:PensionPlansDefinedBenefitMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:PensionPlansDefinedBenefitMember2021-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2021-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:PensionPlansDefinedBenefitMember2023-01-012023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-01-012023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:PensionPlansDefinedBenefitMember2022-01-012022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-01-012022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707us-gaap:DefinedBenefitPlanEquitySecuritiesUsMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000354707us-gaap:DefinedBenefitPlanEquitySecuritiesUsMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000354707us-gaap:DefinedBenefitPlanEquitySecuritiesUsMemberus-gaap:PensionPlansDefinedBenefitMembersrt:MinimumMember2023-12-310000354707srt:MaximumMemberus-gaap:DefinedBenefitPlanEquitySecuritiesUsMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesUsMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesUsMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesUsMembersrt:MinimumMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMembersrt:MaximumMemberus-gaap:DefinedBenefitPlanEquitySecuritiesUsMember2023-12-310000354707us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000354707us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000354707us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:PensionPlansDefinedBenefitMembersrt:MinimumMember2023-12-310000354707srt:MaximumMemberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMembersrt:MinimumMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMembersrt:MaximumMemberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember2023-12-310000354707us-gaap:PensionPlansDefinedBenefitMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000354707us-gaap:PensionPlansDefinedBenefitMemberus-gaap:FixedIncomeSecuritiesMember2022-12-310000354707us-gaap:PensionPlansDefinedBenefitMembersrt:MinimumMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000354707srt:MaximumMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FixedIncomeSecuritiesMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMembersrt:MinimumMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMembersrt:MaximumMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000354707us-gaap:PensionPlansDefinedBenefitMemberus-gaap:PrivateEquityFundsMember2023-12-310000354707us-gaap:PensionPlansDefinedBenefitMemberus-gaap:PrivateEquityFundsMember2022-12-310000354707us-gaap:PensionPlansDefinedBenefitMembersrt:MinimumMemberus-gaap:PrivateEquityFundsMember2023-12-310000354707srt:MaximumMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:PrivateEquityFundsMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:PrivateEquityFundsMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:PrivateEquityFundsMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMembersrt:MinimumMemberus-gaap:PrivateEquityFundsMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMembersrt:MaximumMemberus-gaap:PrivateEquityFundsMember2023-12-310000354707us-gaap:DefinedBenefitPlanEquitySecuritiesMembersrt:MinimumMember2023-12-310000354707srt:MaximumMemberus-gaap:DefinedBenefitPlanEquitySecuritiesMember2023-12-310000354707us-gaap:FairValueInputsLevel12And3Memberus-gaap:DefinedBenefitPlanEquitySecuritiesUsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707us-gaap:DefinedBenefitPlanEquitySecuritiesUsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707us-gaap:DefinedBenefitPlanEquitySecuritiesUsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707us-gaap:FairValueInputsLevel12And3Memberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesUsMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesUsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesUsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707us-gaap:FairValueInputsLevel12And3Memberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707us-gaap:FairValueInputsLevel12And3Memberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707he:DefinedBenefitPlanEquityIndexAndExchangeTradedFundsUSMemberus-gaap:FairValueInputsLevel12And3Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707he:DefinedBenefitPlanEquityIndexAndExchangeTradedFundsUSMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707he:DefinedBenefitPlanEquityIndexAndExchangeTradedFundsUSMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707he:DefinedBenefitPlanEquityIndexAndExchangeTradedFundsUSMemberus-gaap:FairValueInputsLevel12And3Memberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707he:DefinedBenefitPlanEquityIndexAndExchangeTradedFundsUSMemberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707he:DefinedBenefitPlanEquityIndexAndExchangeTradedFundsUSMemberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707he:DefinedBenefitPlanEquityInvestmentsNonUSMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:DefinedBenefitPlanEquityInvestmentsNonUSMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-12-310000354707he:DefinedBenefitPlanEquityInvestmentsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707he:DefinedBenefitPlanEquityInvestmentsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707he:DefinedBenefitPlanEquityInvestmentsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:DefinedBenefitPlanEquityInvestmentsMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:DefinedBenefitPlanEquityInvestmentsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:DefinedBenefitPlanEquityInvestmentsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707us-gaap:FairValueInputsLevel12And3Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000354707us-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000354707us-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FixedIncomeSecuritiesMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707us-gaap:FairValueInputsLevel12And3Memberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000354707us-gaap:FairValueInputsLevel12And3Memberhe:FixedIncomeIndexAndExchangeTradedFundsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707he:FixedIncomeIndexAndExchangeTradedFundsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707us-gaap:FairValueInputsLevel12And3Memberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:FixedIncomeIndexAndExchangeTradedFundsMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:FixedIncomeIndexAndExchangeTradedFundsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707us-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FixedIncomeInvestmentsMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FixedIncomeInvestmentsMember2023-12-310000354707he:FixedIncomeSecuritiesFundsAndInvestmentsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707he:FixedIncomeSecuritiesFundsAndInvestmentsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707he:FixedIncomeSecuritiesFundsAndInvestmentsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707he:FixedIncomeSecuritiesFundsAndInvestmentsMemberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707he:FixedIncomeSecuritiesFundsAndInvestmentsMemberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707he:FixedIncomeSecuritiesFundsAndInvestmentsMemberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707us-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:PrivateEquityFundsMember2023-12-310000354707us-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:PrivateEquityFundsMember2023-12-310000354707us-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:PrivateEquityFundsMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:PrivateEquityFundsMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:PrivateEquityFundsMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:PrivateEquityFundsMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707he:DefinedBenefitPlanCashAndCashEquivalentsAndFundMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-12-310000354707he:DefinedBenefitPlanCashAndCashEquivalentsAndFundMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707he:DefinedBenefitPlanCashAndCashEquivalentsAndFundMemberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-12-310000354707he:DefinedBenefitPlanCashAndCashEquivalentsAndFundMemberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707he:DefinedBenefitPlanPlanAssetsExcludingCashReceivablesAndPayablesNetMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707he:DefinedBenefitPlanPlanAssetsExcludingCashReceivablesAndPayablesNetMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707he:DefinedBenefitPlanPlanAssetsExcludingCashReceivablesAndPayablesNetMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:DefinedBenefitPlanPlanAssetsExcludingCashReceivablesAndPayablesNetMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:DefinedBenefitPlanPlanAssetsExcludingCashReceivablesAndPayablesNetMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:DefinedBenefitPlanPlanAssetsExcludingCashReceivablesAndPayablesNetMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707he:DefinedBenefitPlanPlanAssetsCashReceivablesAndPayablesNetMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:DefinedBenefitPlanPlanAssetsCashReceivablesAndPayablesNetMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707us-gaap:FairValueMeasurementsRecurringMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707us-gaap:FairValueInputsLevel12And3Memberus-gaap:DefinedBenefitPlanEquitySecuritiesUsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707us-gaap:DefinedBenefitPlanEquitySecuritiesUsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707us-gaap:DefinedBenefitPlanEquitySecuritiesUsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707us-gaap:FairValueInputsLevel12And3Memberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesUsMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesUsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesUsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707us-gaap:FairValueInputsLevel12And3Memberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707us-gaap:FairValueInputsLevel12And3Memberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707he:DefinedBenefitPlanEquityIndexAndExchangeTradedFundsUSMemberus-gaap:FairValueInputsLevel12And3Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707he:DefinedBenefitPlanEquityIndexAndExchangeTradedFundsUSMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707he:DefinedBenefitPlanEquityIndexAndExchangeTradedFundsUSMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707he:DefinedBenefitPlanEquityIndexAndExchangeTradedFundsUSMemberus-gaap:FairValueInputsLevel12And3Memberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707he:DefinedBenefitPlanEquityIndexAndExchangeTradedFundsUSMemberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707he:DefinedBenefitPlanEquityIndexAndExchangeTradedFundsUSMemberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707he:DefinedBenefitPlanEquityInvestmentsNonUSMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:DefinedBenefitPlanEquityInvestmentsNonUSMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-12-310000354707he:DefinedBenefitPlanEquityInvestmentsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707he:DefinedBenefitPlanEquityInvestmentsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707he:DefinedBenefitPlanEquityInvestmentsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:DefinedBenefitPlanEquityInvestmentsMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:DefinedBenefitPlanEquityInvestmentsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:DefinedBenefitPlanEquityInvestmentsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707us-gaap:FairValueInputsLevel12And3Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FixedIncomeSecuritiesMember2022-12-310000354707us-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FixedIncomeSecuritiesMember2022-12-310000354707us-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FixedIncomeSecuritiesMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707us-gaap:FairValueInputsLevel12And3Memberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FixedIncomeSecuritiesMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FixedIncomeSecuritiesMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FixedIncomeSecuritiesMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707us-gaap:FairValueInputsLevel12And3Memberhe:FixedIncomeIndexAndExchangeTradedFundsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707he:FixedIncomeIndexAndExchangeTradedFundsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707us-gaap:FairValueInputsLevel12And3Memberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:FixedIncomeIndexAndExchangeTradedFundsMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:FixedIncomeIndexAndExchangeTradedFundsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707us-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FixedIncomeInvestmentsMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FixedIncomeInvestmentsMember2022-12-310000354707he:FixedIncomeSecuritiesFundsAndInvestmentsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707he:FixedIncomeSecuritiesFundsAndInvestmentsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707he:FixedIncomeSecuritiesFundsAndInvestmentsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707he:FixedIncomeSecuritiesFundsAndInvestmentsMemberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707he:FixedIncomeSecuritiesFundsAndInvestmentsMemberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707he:FixedIncomeSecuritiesFundsAndInvestmentsMemberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707us-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:PrivateEquityFundsMember2022-12-310000354707us-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:PrivateEquityFundsMember2022-12-310000354707us-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:PrivateEquityFundsMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:PrivateEquityFundsMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:PrivateEquityFundsMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:PrivateEquityFundsMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707he:DefinedBenefitPlanCashAndCashEquivalentsAndFundMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-12-310000354707he:DefinedBenefitPlanCashAndCashEquivalentsAndFundMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707he:DefinedBenefitPlanCashAndCashEquivalentsAndFundMemberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-12-310000354707he:DefinedBenefitPlanCashAndCashEquivalentsAndFundMemberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707he:DefinedBenefitPlanPlanAssetsExcludingCashReceivablesAndPayablesNetMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707he:DefinedBenefitPlanPlanAssetsExcludingCashReceivablesAndPayablesNetMemberus-gaap:FairValueInputsLevel1Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707he:DefinedBenefitPlanPlanAssetsExcludingCashReceivablesAndPayablesNetMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:DefinedBenefitPlanPlanAssetsExcludingCashReceivablesAndPayablesNetMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:DefinedBenefitPlanPlanAssetsExcludingCashReceivablesAndPayablesNetMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:DefinedBenefitPlanPlanAssetsExcludingCashReceivablesAndPayablesNetMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707he:DefinedBenefitPlanPlanAssetsCashReceivablesAndPayablesNetMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:DefinedBenefitPlanPlanAssetsCashReceivablesAndPayablesNetMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707us-gaap:FairValueMeasurementsRecurringMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-12-310000354707us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMembersrt:MinimumMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-01-012023-12-310000354707srt:MaximumMemberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-01-012023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:FairValueMeasurementsRecurringMembersrt:MinimumMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-01-012023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMembersrt:MaximumMemberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-01-012023-12-310000354707us-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000354707us-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FixedIncomeSecuritiesMember2023-01-012023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FixedIncomeSecuritiesMember2023-01-012023-12-310000354707us-gaap:DefinedBenefitPlanCashAndCashEquivalentsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-12-310000354707us-gaap:DefinedBenefitPlanCashAndCashEquivalentsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMembersrt:MinimumMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-01-012023-12-310000354707srt:MaximumMemberus-gaap:DefinedBenefitPlanCashAndCashEquivalentsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-01-012023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanCashAndCashEquivalentsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanCashAndCashEquivalentsMemberus-gaap:FairValueMeasurementsRecurringMembersrt:MinimumMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-01-012023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMembersrt:MaximumMemberus-gaap:DefinedBenefitPlanCashAndCashEquivalentsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-01-012023-12-310000354707us-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-12-310000354707us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-12-310000354707us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMembersrt:MinimumMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-01-012022-12-310000354707srt:MaximumMemberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-01-012022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:FairValueMeasurementsRecurringMembersrt:MinimumMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-01-012022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMembersrt:MaximumMemberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-01-012022-12-310000354707us-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FixedIncomeSecuritiesMember2022-12-310000354707us-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FixedIncomeSecuritiesMember2022-01-012022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FixedIncomeSecuritiesMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FixedIncomeSecuritiesMember2022-01-012022-12-310000354707us-gaap:DefinedBenefitPlanCashAndCashEquivalentsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-12-310000354707us-gaap:DefinedBenefitPlanCashAndCashEquivalentsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMembersrt:MinimumMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-01-012022-12-310000354707srt:MaximumMemberus-gaap:DefinedBenefitPlanCashAndCashEquivalentsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-01-012022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanCashAndCashEquivalentsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanCashAndCashEquivalentsMemberus-gaap:FairValueMeasurementsRecurringMembersrt:MinimumMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-01-012022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMembersrt:MaximumMemberus-gaap:DefinedBenefitPlanCashAndCashEquivalentsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-01-012022-12-310000354707us-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-12-310000354707us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-01-012023-12-310000354707us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-01-012022-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:FairValueMeasurementsRecurringMember2023-01-012023-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMemberus-gaap:FairValueMeasurementsRecurringMember2022-01-012022-12-310000354707us-gaap:PensionPlansDefinedBenefitMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:PrivateEquityFundsMember2023-01-012023-12-310000354707us-gaap:PensionPlansDefinedBenefitMember2021-01-012021-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2021-01-012021-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:PensionPlansDefinedBenefitMember2021-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:PensionPlansDefinedBenefitMember2023-01-012023-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:PensionPlansDefinedBenefitMember2022-01-012022-12-310000354707he:AmericanSavingsBankFSBMemberus-gaap:PensionPlansDefinedBenefitMember2021-01-012021-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:PensionPlansDefinedBenefitMember2021-01-012021-12-310000354707us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2021-01-012021-12-310000354707he:EquityAndIncentivePlanMember2014-03-012014-03-010000354707he:EquityAndIncentivePlanMember2023-12-310000354707us-gaap:RestrictedStockMemberhe:EquityAndIncentivePlanMember2023-01-012023-12-310000354707us-gaap:RestrictedStockMemberhe:EquityAndIncentivePlanMember2022-01-012022-12-310000354707us-gaap:RestrictedStockMemberhe:EquityAndIncentivePlanMember2021-01-012021-12-310000354707us-gaap:RestrictedStockMemberhe:EquityAndIncentivePlanMember2020-01-012020-12-310000354707he:LongTermIncentivePlanMember2023-01-012023-12-310000354707he:NonemployeeDirectorStockPlanMember2023-12-310000354707us-gaap:CommonStockMember2023-01-012023-12-310000354707us-gaap:CommonStockMember2022-01-012022-12-310000354707us-gaap:CommonStockMember2021-01-012021-12-310000354707us-gaap:RestrictedStockUnitsRSUMember2022-12-310000354707us-gaap:RestrictedStockUnitsRSUMember2021-12-310000354707us-gaap:RestrictedStockUnitsRSUMember2020-12-310000354707us-gaap:RestrictedStockUnitsRSUMember2023-01-012023-12-310000354707us-gaap:RestrictedStockUnitsRSUMember2022-01-012022-12-310000354707us-gaap:RestrictedStockUnitsRSUMember2021-01-012021-12-310000354707us-gaap:RestrictedStockUnitsRSUMember2023-12-310000354707he:LongTermIncentivePlanLinkedToTotalReturnToShareholdersMember2022-12-310000354707he:LongTermIncentivePlanLinkedToTotalReturnToShareholdersMember2021-12-310000354707he:LongTermIncentivePlanLinkedToTotalReturnToShareholdersMember2020-12-310000354707he:LongTermIncentivePlanLinkedToTotalReturnToShareholdersMember2023-01-012023-12-310000354707he:LongTermIncentivePlanLinkedToTotalReturnToShareholdersMember2022-01-012022-12-310000354707he:LongTermIncentivePlanLinkedToTotalReturnToShareholdersMember2021-01-012021-12-310000354707he:LongTermIncentivePlanLinkedToTotalReturnToShareholdersMember2023-12-310000354707he:LongTermIncentivePlanAwardsLinkedToOtherPerformanceConditionsMember2022-12-310000354707he:LongTermIncentivePlanAwardsLinkedToOtherPerformanceConditionsMember2021-12-310000354707he:LongTermIncentivePlanAwardsLinkedToOtherPerformanceConditionsMember2020-12-310000354707he:LongTermIncentivePlanAwardsLinkedToOtherPerformanceConditionsMember2023-01-012023-12-310000354707he:LongTermIncentivePlanAwardsLinkedToOtherPerformanceConditionsMember2022-01-012022-12-310000354707he:LongTermIncentivePlanAwardsLinkedToOtherPerformanceConditionsMember2021-01-012021-12-310000354707he:LongTermIncentivePlanAwardsLinkedToOtherPerformanceConditionsMember2023-12-310000354707us-gaap:ShareBasedCompensationAwardTrancheOneMemberus-gaap:RestrictedStockMemberhe:EquityAndIncentivePlanMember2023-01-012023-12-310000354707us-gaap:ShareBasedCompensationAwardTrancheOneMemberus-gaap:RestrictedStockMemberhe:EquityAndIncentivePlanMember2022-01-012022-12-310000354707us-gaap:ShareBasedCompensationAwardTrancheOneMemberus-gaap:RestrictedStockMemberhe:EquityAndIncentivePlanMember2021-01-012021-12-310000354707us-gaap:ShareBasedCompensationAwardTrancheOneMemberus-gaap:RestrictedStockMemberhe:EquityAndIncentivePlanMember2020-01-012020-12-310000354707us-gaap:RestrictedStockMemberus-gaap:ShareBasedCompensationAwardTrancheTwoMemberhe:EquityAndIncentivePlanMember2023-01-012023-12-310000354707us-gaap:RestrictedStockMemberus-gaap:ShareBasedCompensationAwardTrancheTwoMemberhe:EquityAndIncentivePlanMember2022-01-012022-12-310000354707us-gaap:RestrictedStockMemberus-gaap:ShareBasedCompensationAwardTrancheTwoMemberhe:EquityAndIncentivePlanMember2021-01-012021-12-310000354707us-gaap:RestrictedStockMemberus-gaap:ShareBasedCompensationAwardTrancheTwoMemberhe:EquityAndIncentivePlanMember2020-01-012020-12-310000354707us-gaap:RestrictedStockMemberus-gaap:ShareBasedCompensationAwardTrancheThreeMemberhe:EquityAndIncentivePlanMember2023-01-012023-12-310000354707us-gaap:RestrictedStockMemberus-gaap:ShareBasedCompensationAwardTrancheThreeMemberhe:EquityAndIncentivePlanMember2022-01-012022-12-310000354707us-gaap:RestrictedStockMemberus-gaap:ShareBasedCompensationAwardTrancheThreeMemberhe:EquityAndIncentivePlanMember2021-01-012021-12-310000354707us-gaap:RestrictedStockMemberus-gaap:ShareBasedCompensationAwardTrancheThreeMemberhe:EquityAndIncentivePlanMember2020-01-012020-12-310000354707us-gaap:RestrictedStockMemberhe:ShareBasedPaymentArrangementTrancheFourMemberhe:EquityAndIncentivePlanMember2021-01-012021-12-310000354707us-gaap:RestrictedStockMemberhe:ShareBasedPaymentArrangementTrancheFourMemberhe:EquityAndIncentivePlanMember2020-01-012020-12-310000354707us-gaap:StateAndLocalJurisdictionMember2023-12-310000354707us-gaap:SettlementWithTaxingAuthorityMember2023-12-310000354707he:LapseInStatuteOfLimitationsMember2023-12-310000354707us-gaap:SettlementWithTaxingAuthorityMembersrt:MinimumMember2023-12-310000354707us-gaap:SettlementWithTaxingAuthorityMembersrt:MaximumMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:SubsequentEventMember2024-01-262024-01-260000354707us-gaap:CarryingReportedAmountFairValueDisclosureMember2023-12-310000354707us-gaap:FairValueInputsLevel1Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2023-12-310000354707us-gaap:FairValueInputsLevel2Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2023-12-310000354707us-gaap:FairValueInputsLevel3Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2023-12-310000354707us-gaap:EstimateOfFairValueFairValueDisclosureMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:FairValueInputsLevel1Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:FairValueInputsLevel2Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2023-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2023-12-310000354707us-gaap:CarryingReportedAmountFairValueDisclosureMember2022-12-310000354707us-gaap:FairValueInputsLevel1Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310000354707us-gaap:FairValueInputsLevel2Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310000354707us-gaap:FairValueInputsLevel3Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310000354707us-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:FairValueInputsLevel1Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:FairValueInputsLevel2Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310000354707he:HawaiianElectricCompanyAndSubsidiariesMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310000354707us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2023-12-310000354707us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2023-12-310000354707us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2022-12-310000354707us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2022-12-310000354707us-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2023-12-310000354707us-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707us-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2023-12-310000354707us-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2022-12-310000354707us-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707us-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2022-12-310000354707us-gaap:CorporateBondSecuritiesMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2023-12-310000354707us-gaap:CorporateBondSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707us-gaap:CorporateBondSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2023-12-310000354707us-gaap:CorporateBondSecuritiesMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2022-12-310000354707us-gaap:CorporateBondSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707us-gaap:CorporateBondSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2022-12-310000354707us-gaap:AssetBackedSecuritiesMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2023-12-310000354707us-gaap:AssetBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707us-gaap:AssetBackedSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2023-12-310000354707us-gaap:AssetBackedSecuritiesMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2022-12-310000354707us-gaap:AssetBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707us-gaap:AssetBackedSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2022-12-310000354707us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2023-12-310000354707us-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2023-12-310000354707us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2022-12-310000354707us-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2022-12-310000354707us-gaap:InterestRateLockCommitmentsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2023-12-310000354707us-gaap:InterestRateLockCommitmentsMemberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707us-gaap:InterestRateLockCommitmentsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2023-12-310000354707us-gaap:InterestRateLockCommitmentsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2022-12-310000354707us-gaap:InterestRateLockCommitmentsMemberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707us-gaap:InterestRateLockCommitmentsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2022-12-310000354707us-gaap:ForwardContractsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2023-12-310000354707us-gaap:ForwardContractsMemberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707us-gaap:ForwardContractsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2023-12-310000354707us-gaap:ForwardContractsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2022-12-310000354707us-gaap:ForwardContractsMemberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707us-gaap:ForwardContractsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2022-12-310000354707us-gaap:InterestRateSwapMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2023-12-310000354707us-gaap:InterestRateSwapMemberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707us-gaap:InterestRateSwapMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2023-12-310000354707us-gaap:InterestRateSwapMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2022-12-310000354707us-gaap:InterestRateSwapMemberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707us-gaap:InterestRateSwapMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberhe:BankingSegmentMember2022-12-310000354707us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2023-12-310000354707us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2022-12-310000354707us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707us-gaap:AllOtherSegmentsMemberus-gaap:InterestRateSwapMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707us-gaap:AllOtherSegmentsMemberus-gaap:InterestRateSwapMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2023-12-310000354707us-gaap:AllOtherSegmentsMemberus-gaap:InterestRateSwapMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000354707us-gaap:AllOtherSegmentsMemberus-gaap:InterestRateSwapMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707us-gaap:AllOtherSegmentsMemberus-gaap:InterestRateSwapMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-12-310000354707us-gaap:AllOtherSegmentsMemberus-gaap:InterestRateSwapMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000354707us-gaap:AssetBackedSecuritiesMember2022-12-310000354707us-gaap:AssetBackedSecuritiesMember2021-12-310000354707us-gaap:AssetBackedSecuritiesMember2023-01-012023-12-310000354707us-gaap:AssetBackedSecuritiesMember2022-01-012022-12-310000354707us-gaap:AssetBackedSecuritiesMember2023-12-310000354707us-gaap:MeasurementInputDiscountRateMember2023-12-3100003547072023-10-012023-12-310000354707srt:ParentCompanyMember2023-01-012023-12-310000354707srt:ParentCompanyMember2022-01-012022-12-310000354707srt:ParentCompanyMember2021-01-012021-12-310000354707srt:ParentCompanyMember2021-12-310000354707srt:ParentCompanyMember2020-12-310000354707srt:ParentCompanyMemberhe:Series2013ASeniorNotes3.99PercentDue2023Member2023-12-310000354707srt:ParentCompanyMemberhe:Series2013ASeniorNotes3.99PercentDue2023Member2022-12-310000354707srt:ParentCompanyMemberhe:HEISeniorNotesDue20254.58Member2023-12-310000354707srt:ParentCompanyMemberhe:HEISeniorNotesDue20254.58Member2022-12-310000354707srt:ParentCompanyMemberhe:HEISeniorNotesDue20284.72Member2023-12-310000354707srt:ParentCompanyMemberhe:HEISeniorNotesDue20284.72Member2022-12-310000354707srt:ParentCompanyMemberhe:SeniorNotes282PercentDue2028Member2023-12-310000354707srt:ParentCompanyMemberhe:SeniorNotes282PercentDue2028Member2022-12-310000354707srt:ParentCompanyMemberhe:SeniorNotes248PercentDue2028Member2023-12-310000354707srt:ParentCompanyMemberhe:SeniorNotes248PercentDue2028Member2022-12-310000354707srt:ParentCompanyMemberhe:SeniorNotes604PercentDue2028Member2023-12-310000354707srt:ParentCompanyMemberhe:SeniorNotes604PercentDue2028Member2022-12-310000354707srt:ParentCompanyMemberhe:SeniorNotes298PercentDue2030Member2023-12-310000354707srt:ParentCompanyMemberhe:SeniorNotes298PercentDue2030Member2022-12-310000354707he:SeniorNotes315PercentDue2031Membersrt:ParentCompanyMember2023-12-310000354707he:SeniorNotes315PercentDue2031Membersrt:ParentCompanyMember2022-12-310000354707srt:ParentCompanyMemberhe:SeniorNotes278PercentDue2031Member2023-12-310000354707srt:ParentCompanyMemberhe:SeniorNotes278PercentDue2031Member2022-12-310000354707srt:ParentCompanyMemberhe:SeniorNotes298PercentDue2032Member2023-12-310000354707srt:ParentCompanyMemberhe:SeniorNotes298PercentDue2032Member2022-12-310000354707srt:ParentCompanyMemberhe:SeniorNotes543PercentDue2032Member2023-12-310000354707srt:ParentCompanyMemberhe:SeniorNotes543PercentDue2032Member2022-12-310000354707srt:ParentCompanyMemberhe:SeniorNotes610PercentDue2033Member2023-12-310000354707srt:ParentCompanyMemberhe:SeniorNotes610PercentDue2033Member2022-12-310000354707srt:ParentCompanyMemberhe:SeniorNotes543PercentDue2034Member2023-12-310000354707srt:ParentCompanyMemberhe:SeniorNotes543PercentDue2034Member2022-12-310000354707srt:ParentCompanyMemberhe:SeniorNotes374PercentDue2051Member2023-12-310000354707srt:ParentCompanyMemberhe:SeniorNotes374PercentDue2051Member2022-12-310000354707he:SeniorNotes394PercentDue2052Membersrt:ParentCompanyMember2023-12-310000354707he:SeniorNotes394PercentDue2052Membersrt:ParentCompanyMember2022-12-310000354707srt:ParentCompanyMemberhe:ASBHawaiiInc.Memberhe:ConsolidatedSubsidiaryMember2023-01-012023-12-310000354707srt:ParentCompanyMemberhe:ASBHawaiiInc.Memberhe:ConsolidatedSubsidiaryMember2022-01-012022-12-310000354707srt:ParentCompanyMemberhe:ASBHawaiiInc.Memberhe:ConsolidatedSubsidiaryMember2021-01-012021-12-310000354707us-gaap:AllowanceForCreditLossMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-12-310000354707us-gaap:AllowanceForCreditLossMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-01-012023-12-310000354707us-gaap:AllowanceForCreditLossMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2023-12-310000354707us-gaap:AllowanceForCreditLossMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2021-12-310000354707us-gaap:AllowanceForCreditLossMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2022-01-012022-12-310000354707us-gaap:AllowanceForCreditLossMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2020-12-310000354707us-gaap:AllowanceForCreditLossMemberhe:HawaiianElectricCompanyAndSubsidiariesMember2021-01-012021-12-31
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D. C. 20549
FORM 10-K
☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 2023
OR
☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF
THE SECURITIES EXCHANGE ACT OF 1934
| | | | | | | | |
Exact Name of Registrant | Commission | I.R.S. Employer |
as Specified in Its Charter | File Number | Identification No. |
Hawaiian Electric Industries, Inc. | 1-8503 | 99-0208097 |
Hawaiian Electric Company, Inc. | 1-4955 | 99-0040500 |
State of Hawaii
(State or other jurisdiction of incorporation)
1001 Bishop Street, Suite 2900, Honolulu, Hawaii 96813 - Hawaiian Electric Industries, Inc. (HEI)
1099 Alakea Street, Suite 2200, Honolulu, Hawaii 96813 - Hawaiian Electric Company, Inc. (Hawaiian Electric)
(Address of principal executive offices and zip code)
Registrant’s telephone number, including area code:
(808) 543-5662 - HEI
(808) 543-7771 - Hawaiian Electric
Not applicable
(Former name or former address, if changed since last report.)
Securities registered pursuant to Section 12(b) of the Act:
| | | | | | | | | | | | | | | | | | | | |
Registrant | | Title of each class | | Trading Symbol | | Name of each exchange on which registered |
Hawaiian Electric Industries, Inc. | | Common Stock, Without Par Value | | HE | | New York Stock Exchange |
Securities registered pursuant to Section 12(g) of the Act:
| | | | | | | | |
Registrant | | Title of each class |
Hawaiian Electric Industries, Inc. | | None |
Hawaiian Electric Company, Inc. | | Cumulative Preferred Stock |
| | |
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Hawaiian Electric Industries, Inc. | Yes | ☒ | No | ☐ | | Hawaiian Electric Company, Inc. | Yes | ☐ | No | ☒ |
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Hawaiian Electric Industries, Inc. | Yes | ☐ | No | ☒ | | Hawaiian Electric Company, Inc. | Yes | ☐ | No | ☒ |
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Hawaiian Electric Industries, Inc. | Yes | ☒ | No | ☐ | | Hawaiian Electric Company, Inc. | Yes | ☒ | No | ☐ |
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Hawaiian Electric Industries, Inc. | Yes | ☒ | No | ☐ | | Hawaiian Electric Company, Inc. | Yes | ☒ | No | ☐ |
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer”, “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
| | | | | | | | | | | | | | | | | | | | | | | |
Hawaiian Electric Industries, Inc.: | | | | Hawaiian Electric Company, Inc.: | | | |
Large accelerated filer | ☒ | Smaller reporting company | ☐ | Large accelerated filer | ☐ | Smaller reporting company | ☐ |
Accelerated filer | ☐ | Emerging growth company | ☐ | Accelerated filer | ☐ | Emerging growth company | ☐ |
Non-accelerated filer | ☐ | | | Non-accelerated filer | ☒ | | |
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Hawaiian Electric Industries, Inc. | Yes | ☐ | No | ☐ | | Hawaiian Electric Company, Inc. | Yes | ☐ | No | ☐ |
Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Hawaiian Electric Industries, Inc. | ☒ | | | | | Hawaiian Electric Company, Inc. | ☐ | | | |
If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Hawaiian Electric Industries, Inc. | ☐ | | | | | Hawaiian Electric Company, Inc. | ☐ | | | |
Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant
to §240.10D-1(b).
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Hawaiian Electric Industries, Inc. | ☐ | | | | | Hawaiian Electric Company, Inc. | ☐ | | | |
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Hawaiian Electric Industries, Inc. | Yes | ☐ | No | ☒ | | Hawaiian Electric Company, Inc. | Yes | ☐ | No | ☒ |
| | | | | | | | | | |
| | | | | | | | | | | | | | |
| | Aggregate market value of the voting and non-voting common equity held by non-affiliates of the registrants as of | | Number of shares of common stock outstanding of the registrants as of |
| | June 30, 2023 | | June 30, 2023 | | February 15, 2024 |
Hawaiian Electric Industries, Inc. (Without Par Value) | | $3,967,939,884 | | 109,611,599 | | 110,151,798 |
Hawaiian Electric Company, Inc. ($6-2/3 Par Value) | | None | | 17,854,278 | | 17,854,278 |
| | | | | | |
DOCUMENTS INCORPORATED BY REFERENCE
Hawaiian Electric’s Exhibit 99.1, consisting of:
Hawaiian Electric’s Directors, Executive Officers and Corporate Governance—Part III
Hawaiian Electric’s Executive Compensation—Part III
Hawaiian Electric’s Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters—
Part III
Hawaiian Electric’s Certain Relationships and Related Transactions, and Director Independence—Part III
Hawaiian Electric’s Principal Accounting Fees and Services—Part III
Selected sections of Proxy Statement of HEI for the 2024 Annual Meeting of Shareholders to be filed-Part III
| | |
|
|
This combined Form 10-K represents separate filings by Hawaiian Electric Industries, Inc. and Hawaiian Electric Company, Inc. Information contained herein relating to any individual registrant is filed by each registrant on its own behalf. Hawaiian Electric makes no representations as to any information not relating to it or its subsidiaries. |
|
TABLE OF CONTENTS
| | | | | | | | |
| | Page |
| | |
Glossary of Terms | |
Cautionary Note Regarding Forward-Looking Statements | |
| |
| PART I | |
| | |
Item 1. | Business | |
Item 1A. | Risk Factors | |
Item 1B. | Unresolved Staff Comments | |
Item 1C. | Cybersecurity | |
Item 2. | Properties | |
Item 3. | Legal Proceedings | |
Item 4. | Mine Safety Disclosures | |
Information About Our Executive Officers (HEI) | |
| PART II | |
| | |
Item 5. | Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities | |
Item 6. | [Reserved] | |
Item 7. | Management’s Discussion and Analysis of Financial Condition and Results of Operations | |
Item 7A. | Quantitative and Qualitative Disclosures about Market Risk | |
Item 8. | Financial Statements and Supplementary Data | |
Item 9. | Changes in and Disagreements with Accountants on Accounting and Financial Disclosure | |
Item 9A. | Controls and Procedures | |
Item 9B. | Other Information | |
Item 9C. | Disclosure Regarding Foreign Jurisdictions that Prevent Inspections | |
| | |
| PART III | |
| | |
Item 10. | Directors, Executive Officers and Corporate Governance | |
Item 11. | Executive Compensation | |
Item 12. | Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters | |
Item 13. | Certain Relationships and Related Transactions, and Director Independence | |
Item 14. | Principal Accounting Fees and Services | |
| | |
| PART IV | |
| | |
Item 15. | Exhibits and Financial Statement Schedules | |
Item 16. | Form 10-K Summary | |
Signatures | |
GLOSSARY OF TERMS
Defined below are certain terms used in this report:
| | | | | | | | |
Terms | | Definitions |
| | |
ABOs | | Accumulated benefit obligations |
ACL | | Allowance for credit losses as determined under the credit loss standard (ASU No. 2016-13, adopted by the Company on January 1, 2020), which requires the measurement of lifetime expected credit losses for financial assets held at the reporting date (based on historical experience, current conditions and reasonable and supportable forecasts) |
AES Hawaii | | AES Hawaii, Inc. |
AFS | | Available-for-sale |
AFUDC | | Allowance for funds used during construction |
AOCI | | Accumulated other comprehensive income (loss) |
APBO | | Accumulated postretirement benefit obligation |
ARA | | Annual revenue adjustment |
AROs | | Asset retirement obligations |
ASB | | American Savings Bank, F.S.B., a wholly-owned subsidiary of ASB Hawaii Inc. |
ASB Hawaii | | ASB Hawaii, Inc., a wholly-owned subsidiary of Hawaiian Electric Industries, Inc. and the parent company of American Savings Bank, F.S.B. |
ASC | | Accounting Standards Codification |
ASU | | Accounting Standards Update |
BESS | | Battery Energy Storage System |
Btu | | British thermal unit |
| | |
CBRE | | Community-based renewable energy |
CERCLA | | Comprehensive Environmental Response, Compensation and Liability Act |
Company | | When used in Hawaiian Electric Industries, Inc. sections and in the Notes to Consolidated Financial Statements, “Company” refers to Hawaiian Electric Industries, Inc. and its direct and indirect subsidiaries, including, without limitation, Hawaiian Electric Company, Inc. and its subsidiaries (listed under Hawaiian Electric); ASB Hawaii, Inc. and its subsidiary, American Savings Bank, F.S.B.; and Pacific Current, LLC and its subsidiaries (listed under Pacific Current). When used in Hawaiian Electric Company, Inc. sections, “Company” refers to Hawaiian Electric Company, Inc. and its direct subsidiaries. |
Consolidated Financial Statements | | HEI’s or Hawaiian Electric’s Consolidated Financial Statements, including notes, in Item 8 of this Form 10-K |
Consumer Advocate | | Division of Consumer Advocacy, Department of Commerce and Consumer Affairs of the State of Hawaii |
CSSM | | Collective Shared Savings Mechanism |
D&O | | Decision and order from the PUC |
DBF | | State of Hawaii Department of Budget and Finance |
DER | | Distributed energy resources |
Dodd-Frank Act | | Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 |
| | |
DRIP | | HEI Dividend Reinvestment and Stock Purchase Plan |
| | |
ECRC | | Energy cost recovery clause |
EIP | | 2010 Equity and Incentive Plan, as amended |
EPA | | Environmental Protection Agency - federal |
EPRM | | Exceptional Project Recovery Mechanism |
EPS | | Earnings per share |
ERISA | | Employee Retirement Income Security Act of 1974, as amended |
ERL | | Environmental Response Law of the State of Hawaii |
ERP/EAM | | Enterprise Resource Planning/Enterprise Asset Management |
| | |
ESM | | Earnings Sharing Mechanism |
Exchange Act | | Securities Exchange Act of 1934 |
FASB | | Financial Accounting Standards Board |
FDIC | | Federal Deposit Insurance Corporation |
federal | | U.S. Government |
FERC | | Federal Energy Regulatory Commission |
FHLB | | Federal Home Loan Bank |
GLOSSARY OF TERMS (continued)
| | | | | | | | |
Terms | | Definitions |
| | |
FICO | | Fair Isaac Corporation |
Fitch | | Fitch Ratings, Inc. |
FRB | | Federal Reserve Board |
GAAP | | Accounting principles generally accepted in the United States of America |
GCOD | | Guaranteed commercial operation date |
GHG | | Greenhouse gas |
Gramm Act | | Gramm-Leach-Bliley Act of 1999 |
GSPA | | Grid Services Purchase Agreement |
GWh | | Gigawatt-hour/s (as applicable) |
Hamakua Energy | | Hamakua Energy, LLC, an indirect subsidiary of Pacific Current |
Hawaii Electric Light | | Hawaii Electric Light Company, Inc., an electric utility subsidiary of Hawaiian Electric Company, Inc. |
Hawaiian Electric | | Hawaiian Electric Company, Inc., an electric utility subsidiary of Hawaiian Electric Industries, Inc. and parent company of Hawaii Electric Light Company, Inc., Maui Electric Company, Limited and Renewable Hawaii, Inc. |
Hawaiian Electric’s MD&A | | Hawaiian Electric Company, Inc.’s Management’s Discussion and Analysis of Financial Condition and Results of Operations in Item 7 of this Form 10-K |
HEI | | Hawaiian Electric Industries, Inc., direct parent company of Hawaiian Electric Company, Inc., ASB Hawaii, Inc. and Pacific Current, LLC. |
HEI’s 2024 Proxy Statement | | Selected sections of Proxy Statement for the 2024 Annual Meeting of Shareholders of Hawaiian Electric Industries, Inc. to be filed after the date of this Form 10-K and not later than 120 days after December 31, 2023, which are incorporated in this Form 10-K by reference |
HEI’s MD&A | | Hawaiian Electric Industries, Inc.’s Management’s Discussion and Analysis of Financial Condition and Results of Operations in Item 7 of this Form 10-K |
HEIRSP | | Hawaiian Electric Industries Retirement Savings Plan |
HELOC | | Home equity line of credit |
HPOWER | | City and County of Honolulu with respect to a power purchase agreement for a refuse-fired plant |
HSFO | | High sulfur fuel oil |
HTM | | Held-to-maturity |
IIJA | | Infrastructure Investment and Jobs Act |
IPP | | Independent power producer |
Kaʻieʻie Waho | | Kaʻieʻie Waho Company, LLC, a subsidiary of Pacific Current |
Kalaeloa | | Kalaeloa Partners, L.P. |
kW | | Kilowatt/s (as applicable) |
kWh | | Kilowatt-hour/s (as applicable) |
LIBOR | | London Inter-Bank Offered Rate |
LMI | | Low-to-moderate income |
LSFO | | Low sulfur fuel oil |
LTIP | | Long-term incentive plan |
Mahipapa | | Mahipapa, LLC, a subsidiary of Pacific Current |
Maui Electric | | Maui Electric Company, Limited, an electric utility subsidiary of Hawaiian Electric Company, Inc. |
Maui windstorm and wildfires | | The fires in the West Maui (Lahaina) and Upcountry Maui areas that caused fatalities and widespread property damage in Lahaina on August 8, 2023 |
Mauo | | Mauo, LLC, a subsidiary of Pacific Current |
MBtu | | Million British thermal unit |
MD&A | | Management’s Discussion and Analysis of Financial Condition and Results of Operations |
| | |
| | |
Moody’s | | Moody’s Investors Service’s |
MPIR | | Major Project Interim Recovery |
MRP | | Multi-year rate period |
MSR | | Mortgage servicing right |
MW | | Megawatt/s (as applicable) |
MWh | | Megawatt-hour/s (as applicable) |
NA | | Not applicable |
| | |
NII | | Net interest income |
GLOSSARY OF TERMS (continued)
| | | | | | | | |
Terms | | Definitions |
| | |
NPBC | | Net periodic benefits costs |
NPPC | | Net periodic pension costs |
O&M | | Other operation and maintenance |
OCC | | Office of the Comptroller of the Currency |
OPEB | | Postretirement benefits other than pensions |
OTS | | Office of Thrift Supervision, Department of Treasury |
Pacific Current | | Pacific Current, LLC, a wholly owned subsidiary of HEI and parent company of Hamakua Holdings, LLC, Mauo, LLC, Alenuihaha Developments, LLC, Kaʻieʻie Waho Company, LLC, Kaʻaipuaʻa, LLC, Upena, LLC and Mahipapa, LLC |
PBO | | Projected benefit obligation |
PBR | | Performance-based regulation |
PCB | | Polychlorinated biphenyls |
PGV | | Puna Geothermal Venture |
PIMs | | Performance incentive mechanisms |
PPA | | Power purchase agreement |
PPAC | | Purchased power adjustment clause |
PUC | | Public Utilities Commission of the State of Hawaii |
PURPA | | Public Utility Regulatory Policies Act of 1978 |
PV | | Photovoltaic |
QF | | Qualifying Facility under the Public Utility Regulatory Policies Act of 1978 |
QTL | | Qualified Thrift Lender |
RAM | | Revenue adjustment mechanism |
RBA | | Revenue balancing account |
Registrant | | Each of Hawaiian Electric Industries, Inc. and Hawaiian Electric Company, Inc. |
RFPs | | Request for proposals |
RHI | | Renewable Hawaii, Inc., a wholly-owned nonregulated subsidiary of Hawaiian Electric Company, Inc. |
ROACE | | Return on average common equity |
| | |
RPS | | Renewable portfolio standards |
S&P | | S&P Global Ratings |
SAIDI | | System Average Interruption Duration Index |
SAIFI | | System Average Interruption Frequency Index |
SEC | | Securities and Exchange Commission |
See | | Means the referenced material is incorporated by reference (or means refer to the referenced section in this document or the referenced exhibit or other document) |
SLHCs | | Savings & Loan Holding Companies |
| | |
|