"You are an auditor for XBRL filings. \nGiven two concepts and the provided filing (schema, presentation, calculation, definition, label, instance, and US GAAP taxonomy),\ndetermine which one of the following erroneous relationship types best describes the relationship between the two concepts:\n\n(1) Reversal  \n    Definition: A relationship is flagged as Reversal when the filer\u2019s extension taxonomy redefines element hierarchy inconsistently with the US GAAP taxonomy. Specifically, this occurs when an element that should be a sibling in the US GAAP taxonomy is instead defined as a child of another element (or vice versa, a child element is incorrectly redefined as a sibling).\n\n(2) Inappropriateness  \n    Definition: A relationship is flagged as Inappropriateness when elements appear under an abstract category where they do not belong, contrary to the US GAAP taxonomy.\n\n(3) CombinationErr  \n    Definition: A relationship is flagged as CombinationErr when an axis in the filer\u2019s extension taxonomy is associated with inappropriate members not permitted by the US GAAP taxonomy.\n\nYou must reference the US GAAP taxonomy to retrieve and check the two concepts across the entire filing.\nOutput only one of the following labels exactly, chosen strictly from:\n[\"Reversal\", \"Inappropriateness\", \"CombinationErr\"].\n\nNo explanations. No extra text. Only the label.\n\n    \n##Schema document\nNone\n\n##Presentation linkbase document\n<?xml version='1.0' encoding='US-ASCII'?>\n<link:linkbase xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd\"><link:roleRef roleURI=\"http://www.chpk.com/role/AcquisitionsandDivestituresDetails\" xlink:type=\"simple\" xlink:href=\"cpk-20230930.xsd#AcquisitionsandDivestituresDetails\"/>\n  <link:presentationLink xlink:role=\"http://www.chpk.com/role/AcquisitionsandDivestituresDetails\" xlink:type=\"extended\">\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract_36c9eea7-a38e-40df-ab4f-b11f9528cf38\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract\"/>\n    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xlink:from=\"loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_83afa325-5fdd-46c9-b527-b725db9b1f63\" xlink:to=\"loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_393e9ffb-3889-494c-b1f4-60bc3cd6a413\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRegulatoryLiabilities_dc681375-19bd-446d-a21f-65295d53e789\" xlink:href=\"cpk-20230930.xsd#cpk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRegulatoryLiabilities\"/>\n    <link:presentationArc order=\"11\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_83afa325-5fdd-46c9-b527-b725db9b1f63\" xlink:to=\"loc_cpk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRegulatoryLiabilities_dc681375-19bd-446d-a21f-65295d53e789\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets_e0c0cc26-3cae-4686-b838-022060e6f1ed\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets\"/>\n    <link:presentationArc order=\"12\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_83afa325-5fdd-46c9-b527-b725db9b1f63\" xlink:to=\"loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets_e0c0cc26-3cae-4686-b838-022060e6f1ed\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_AdditionalFirmNaturalGasTransportationDeliverability_2ed58166-d9bc-4047-9974-84eb809cd3f4\" xlink:href=\"cpk-20230930.xsd#cpk_AdditionalFirmNaturalGasTransportationDeliverability\"/>\n    <link:presentationArc order=\"13\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_83afa325-5fdd-46c9-b527-b725db9b1f63\" xlink:to=\"loc_cpk_AdditionalFirmNaturalGasTransportationDeliverability_2ed58166-d9bc-4047-9974-84eb809cd3f4\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_GallonsAcquiredThroughAcquisition_78bab1e5-cfb3-412f-9990-2d253ac8c63d\" xlink:href=\"cpk-20230930.xsd#cpk_GallonsAcquiredThroughAcquisition\"/>\n    <link:presentationArc order=\"14\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_83afa325-5fdd-46c9-b527-b725db9b1f63\" xlink:to=\"loc_cpk_GallonsAcquiredThroughAcquisition_78bab1e5-cfb3-412f-9990-2d253ac8c63d\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_BusinessAcquisitionPreacquisitionContingencyAmountOfSettlement_d0564528-a93a-4c5b-9da2-e5797f3aed5a\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionPreacquisitionContingencyAmountOfSettlement\"/>\n    <link:presentationArc order=\"15\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_83afa325-5fdd-46c9-b527-b725db9b1f63\" xlink:to=\"loc_us-gaap_BusinessAcquisitionPreacquisitionContingencyAmountOfSettlement_d0564528-a93a-4c5b-9da2-e5797f3aed5a\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_AcquisitionsAdditionalInformationTable_d2f7423e-555e-4a10-8eba-6949edbe22cd\" xlink:href=\"cpk-20230930.xsd#cpk_AcquisitionsAdditionalInformationTable\"/>\n    <link:presentationArc order=\"2\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract_36c9eea7-a38e-40df-ab4f-b11f9528cf38\" xlink:to=\"loc_cpk_AcquisitionsAdditionalInformationTable_d2f7423e-555e-4a10-8eba-6949edbe22cd\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_BusinessAcquisitionAxis_bd0737d2-cb86-49b8-8a37-61a13497d234\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAxis\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_cpk_AcquisitionsAdditionalInformationTable_d2f7423e-555e-4a10-8eba-6949edbe22cd\" xlink:to=\"loc_us-gaap_BusinessAcquisitionAxis_bd0737d2-cb86-49b8-8a37-61a13497d234\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_BusinessAcquisitionAcquireeDomain_f502c303-8bb0-4e88-8b99-b6b85d277e40\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_PlanetFoundMember_3809e478-dc88-460d-9720-17c128691551\" xlink:href=\"cpk-20230930.xsd#cpk_PlanetFoundMember\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_FloridaCityGasMember_1eab84c8-a4c3-4de0-b8cf-2622e53f60d2\" xlink:href=\"cpk-20230930.xsd#cpk_FloridaCityGasMember\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_StatementBusinessSegmentsAxis_9f20c300-9121-456c-9d31-4a7b13092727\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis\"/>\n    <link:presentationArc order=\"2\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_cpk_AcquisitionsAdditionalInformationTable_d2f7423e-555e-4a10-8eba-6949edbe22cd\" xlink:to=\"loc_us-gaap_StatementBusinessSegmentsAxis_9f20c300-9121-456c-9d31-4a7b13092727\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_SegmentDomain_4910c684-bd9b-471d-82c0-ac4ca1f732a0\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_StatementBusinessSegmentsAxis_9f20c300-9121-456c-9d31-4a7b13092727\" xlink:to=\"loc_us-gaap_SegmentDomain_4910c684-bd9b-471d-82c0-ac4ca1f732a0\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_UnregulatedEnergyMember_5bb48b66-5953-4a4b-b429-4a2f2d639c25\" xlink:href=\"cpk-20230930.xsd#cpk_UnregulatedEnergyMember\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_SegmentDomain_4910c684-bd9b-471d-82c0-ac4ca1f732a0\" xlink:to=\"loc_cpk_UnregulatedEnergyMember_5bb48b66-5953-4a4b-b429-4a2f2d639c25\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_RegulatedEnergyMember_f139ce57-0df4-4a4b-af82-870790fe6913\" xlink:href=\"cpk-20230930.xsd#cpk_RegulatedEnergyMember\"/>\n    <link:presentationArc order=\"2\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_SegmentDomain_4910c684-bd9b-471d-82c0-ac4ca1f732a0\" xlink:to=\"loc_cpk_RegulatedEnergyMember_f139ce57-0df4-4a4b-af82-870790fe6913\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_AcquisitionsAdditionalInformationLineItems_1b8ae082-70e5-499f-b86d-a491cfd2e782\" xlink:href=\"cpk-20230930.xsd#cpk_AcquisitionsAdditionalInformationLineItems\"/>\n    <link:presentationArc order=\"3\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_cpk_AcquisitionsAdditionalInformationTable_d2f7423e-555e-4a10-8eba-6949edbe22cd\" xlink:to=\"loc_cpk_AcquisitionsAdditionalInformationLineItems_1b8ae082-70e5-499f-b86d-a491cfd2e782\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_TonsOfPoultryLitter_135943aa-6ccf-4b47-a2ac-22f13da20332\" xlink:href=\"cpk-20230930.xsd#cpk_TonsOfPoultryLitter\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_cpk_AcquisitionsAdditionalInformationLineItems_1b8ae082-70e5-499f-b86d-a491cfd2e782\" xlink:to=\"loc_cpk_TonsOfPoultryLitter_135943aa-6ccf-4b47-a2ac-22f13da20332\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_Numberofcustomersacquiredthroughacquisition_6c0900b3-857b-42cd-a06d-08ef92983f96\" xlink:href=\"cpk-20230930.xsd#cpk_Numberofcustomersacquiredthroughacquisition\"/>\n    <link:presentationArc order=\"2\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_cpk_AcquisitionsAdditionalInformationLineItems_1b8ae082-70e5-499f-b86d-a491cfd2e782\" xlink:to=\"loc_cpk_Numberofcustomersacquiredthroughacquisition_6c0900b3-857b-42cd-a06d-08ef92983f96\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_BusinessCombinationConsiderationTransferred1_a6db9ad4-83ca-475d-98ac-c4a2aac3220e\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationConsiderationTransferred1\"/>\n    <link:presentationArc order=\"3\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_cpk_AcquisitionsAdditionalInformationLineItems_1b8ae082-70e5-499f-b86d-a491cfd2e782\" xlink:to=\"loc_us-gaap_BusinessCombinationConsiderationTransferred1_a6db9ad4-83ca-475d-98ac-c4a2aac3220e\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_NumberOfMilesOfDistributionMains_855db39d-0738-4706-b64e-048d54bb5960\" xlink:href=\"cpk-20230930.xsd#cpk_NumberOfMilesOfDistributionMains\"/>\n    <link:presentationArc order=\"4\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_cpk_AcquisitionsAdditionalInformationLineItems_1b8ae082-70e5-499f-b86d-a491cfd2e782\" xlink:to=\"loc_cpk_NumberOfMilesOfDistributionMains_855db39d-0738-4706-b64e-048d54bb5960\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_NumberOfMilesOfTransmissionPipe_0fa7e59e-2a58-4f33-b6dc-60d0bcbc6541\" xlink:href=\"cpk-20230930.xsd#cpk_NumberOfMilesOfTransmissionPipe\"/>\n    <link:presentationArc order=\"5\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_cpk_AcquisitionsAdditionalInformationLineItems_1b8ae082-70e5-499f-b86d-a491cfd2e782\" xlink:to=\"loc_cpk_NumberOfMilesOfTransmissionPipe_0fa7e59e-2a58-4f33-b6dc-60d0bcbc6541\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_TransactionRelatedExpenses_7d26942b-763f-4623-a2fc-53178e3982a6\" xlink:href=\"cpk-20230930.xsd#cpk_TransactionRelatedExpenses\"/>\n    <link:presentationArc order=\"6\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_cpk_AcquisitionsAdditionalInformationLineItems_1b8ae082-70e5-499f-b86d-a491cfd2e782\" xlink:to=\"loc_cpk_TransactionRelatedExpenses_7d26942b-763f-4623-a2fc-53178e3982a6\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_BridgeLoan_be1bff4e-a5d1-482c-af08-c4e94e279253\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BridgeLoan\"/>\n    <link:presentationArc order=\"7\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_cpk_AcquisitionsAdditionalInformationLineItems_1b8ae082-70e5-499f-b86d-a491cfd2e782\" xlink:to=\"loc_us-gaap_BridgeLoan_be1bff4e-a5d1-482c-af08-c4e94e279253\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n  </link:presentationLink>\n  </link:linkbase>\n\n\n##Calculation linkbase document\n<?xml version='1.0' encoding='US-ASCII'?>\n<link:linkbase xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd\"/>\n\n\n##Definition linkbase document\n<?xml version='1.0' encoding='US-ASCII'?>\n<link:linkbase xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xbrldt=\"http://xbrl.org/2005/xbrldt\" xsi:schemaLocation=\"http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd\"><link:arcroleRef arcroleURI=\"http://xbrl.org/int/dim/arcrole/all\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/2005/xbrldt-2005.xsd#all\"/>\n  <link:arcroleRef arcroleURI=\"http://xbrl.org/int/dim/arcrole/hypercube-dimension\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension\"/>\n  <link:arcroleRef arcroleURI=\"http://xbrl.org/int/dim/arcrole/dimension-default\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default\"/>\n  <link:arcroleRef arcroleURI=\"http://xbrl.org/int/dim/arcrole/dimension-domain\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain\"/>\n  <link:arcroleRef arcroleURI=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member\"/>\n  <link:roleRef roleURI=\"http://www.chpk.com/role/AcquisitionsandDivestituresDetails\" xlink:type=\"simple\" xlink:href=\"cpk-20230930.xsd#AcquisitionsandDivestituresDetails\"/>\n  <link:definitionLink xlink:role=\"http://www.chpk.com/role/AcquisitionsandDivestituresDetails\" xlink:type=\"extended\">\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_83afa325-5fdd-46c9-b527-b725db9b1f63\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_e1171a94-1ffb-40ec-af70-d0d308bca8ba\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_83afa325-5fdd-46c9-b527-b725db9b1f63\" xlink:to=\"loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_e1171a94-1ffb-40ec-af70-d0d308bca8ba\" xlink:type=\"arc\" order=\"0\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_Revenues_7cd6b36c-302d-4437-9f2d-4ec0ef42955b\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Revenues\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_83afa325-5fdd-46c9-b527-b725db9b1f63\" xlink:to=\"loc_us-gaap_Revenues_7cd6b36c-302d-4437-9f2d-4ec0ef42955b\" xlink:type=\"arc\" order=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_OperatingIncomeLoss_f6fac5db-5dce-49c8-8317-adbe35682d51\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingIncomeLoss\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_83afa325-5fdd-46c9-b527-b725db9b1f63\" xlink:to=\"loc_us-gaap_OperatingIncomeLoss_f6fac5db-5dce-49c8-8317-adbe35682d51\" xlink:type=\"arc\" order=\"2\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_Numberofcustomersacquiredthroughacquisition_57dd834d-47d0-469f-83e4-8ef1f097fbaf\" xlink:href=\"cpk-20230930.xsd#cpk_Numberofcustomersacquiredthroughacquisition\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" 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xlink:type=\"locator\" xlink:label=\"loc_cpk_BusinessCombinationWorkingCapital_56e19434-0b3e-48d9-b92f-759f683ee8fd\" xlink:href=\"cpk-20230930.xsd#cpk_BusinessCombinationWorkingCapital\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_83afa325-5fdd-46c9-b527-b725db9b1f63\" xlink:to=\"loc_cpk_BusinessCombinationWorkingCapital_56e19434-0b3e-48d9-b92f-759f683ee8fd\" xlink:type=\"arc\" order=\"5\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_BusinessCombinationContingentConsiderationLiability_6c892b92-f66b-4184-831d-28c0a6432a3b\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationContingentConsiderationLiability\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" 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xlink:label=\"loc_cpk_Numberofcustomersacquiredthroughacquisition_6c0900b3-857b-42cd-a06d-08ef92983f96\" xlink:href=\"cpk-20230930.xsd#cpk_Numberofcustomersacquiredthroughacquisition\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_cpk_AcquisitionsAdditionalInformationLineItems_1b8ae082-70e5-499f-b86d-a491cfd2e782\" xlink:to=\"loc_cpk_Numberofcustomersacquiredthroughacquisition_6c0900b3-857b-42cd-a06d-08ef92983f96\" xlink:type=\"arc\" order=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_BusinessCombinationConsiderationTransferred1_a6db9ad4-83ca-475d-98ac-c4a2aac3220e\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationConsiderationTransferred1\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_cpk_AcquisitionsAdditionalInformationLineItems_1b8ae082-70e5-499f-b86d-a491cfd2e782\" xlink:to=\"loc_us-gaap_BusinessCombinationConsiderationTransferred1_a6db9ad4-83ca-475d-98ac-c4a2aac3220e\" xlink:type=\"arc\" order=\"2\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_NumberOfMilesOfDistributionMains_855db39d-0738-4706-b64e-048d54bb5960\" xlink:href=\"cpk-20230930.xsd#cpk_NumberOfMilesOfDistributionMains\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_cpk_AcquisitionsAdditionalInformationLineItems_1b8ae082-70e5-499f-b86d-a491cfd2e782\" xlink:to=\"loc_cpk_NumberOfMilesOfDistributionMains_855db39d-0738-4706-b64e-048d54bb5960\" xlink:type=\"arc\" order=\"3\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_NumberOfMilesOfTransmissionPipe_0fa7e59e-2a58-4f33-b6dc-60d0bcbc6541\" xlink:href=\"cpk-20230930.xsd#cpk_NumberOfMilesOfTransmissionPipe\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_cpk_AcquisitionsAdditionalInformationLineItems_1b8ae082-70e5-499f-b86d-a491cfd2e782\" xlink:to=\"loc_cpk_NumberOfMilesOfTransmissionPipe_0fa7e59e-2a58-4f33-b6dc-60d0bcbc6541\" xlink:type=\"arc\" order=\"4\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_TransactionRelatedExpenses_7d26942b-763f-4623-a2fc-53178e3982a6\" xlink:href=\"cpk-20230930.xsd#cpk_TransactionRelatedExpenses\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_cpk_AcquisitionsAdditionalInformationLineItems_1b8ae082-70e5-499f-b86d-a491cfd2e782\" xlink:to=\"loc_cpk_TransactionRelatedExpenses_7d26942b-763f-4623-a2fc-53178e3982a6\" xlink:type=\"arc\" order=\"5\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_BridgeLoan_be1bff4e-a5d1-482c-af08-c4e94e279253\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BridgeLoan\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_cpk_AcquisitionsAdditionalInformationLineItems_1b8ae082-70e5-499f-b86d-a491cfd2e782\" xlink:to=\"loc_us-gaap_BridgeLoan_be1bff4e-a5d1-482c-af08-c4e94e279253\" xlink:type=\"arc\" order=\"6\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_AcquisitionsAdditionalInformationTable_d2f7423e-555e-4a10-8eba-6949edbe22cd\" xlink:href=\"cpk-20230930.xsd#cpk_AcquisitionsAdditionalInformationTable\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/all\" xlink:from=\"loc_cpk_AcquisitionsAdditionalInformationLineItems_1b8ae082-70e5-499f-b86d-a491cfd2e782\" xlink:to=\"loc_cpk_AcquisitionsAdditionalInformationTable_d2f7423e-555e-4a10-8eba-6949edbe22cd\" xlink:type=\"arc\" order=\"2\" xbrldt:closed=\"true\" xbrldt:contextElement=\"segment\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_BusinessAcquisitionAxis_bd0737d2-cb86-49b8-8a37-61a13497d234\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAxis\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/hypercube-dimension\" xlink:from=\"loc_cpk_AcquisitionsAdditionalInformationTable_d2f7423e-555e-4a10-8eba-6949edbe22cd\" xlink:to=\"loc_us-gaap_BusinessAcquisitionAxis_bd0737d2-cb86-49b8-8a37-61a13497d234\" xlink:type=\"arc\" order=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_BusinessAcquisitionAcquireeDomain_bd0737d2-cb86-49b8-8a37-61a13497d234_default\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_BusinessAcquisitionAcquireeDomain_f502c303-8bb0-4e88-8b99-b6b85d277e40\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_PlanetFoundMember_3809e478-dc88-460d-9720-17c128691551\" xlink:href=\"cpk-20230930.xsd#cpk_PlanetFoundMember\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_FloridaCityGasMember_1eab84c8-a4c3-4de0-b8cf-2622e53f60d2\" xlink:href=\"cpk-20230930.xsd#cpk_FloridaCityGasMember\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_StatementBusinessSegmentsAxis_9f20c300-9121-456c-9d31-4a7b13092727\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/hypercube-dimension\" xlink:from=\"loc_cpk_AcquisitionsAdditionalInformationTable_d2f7423e-555e-4a10-8eba-6949edbe22cd\" xlink:to=\"loc_us-gaap_StatementBusinessSegmentsAxis_9f20c300-9121-456c-9d31-4a7b13092727\" xlink:type=\"arc\" order=\"2\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_SegmentDomain_9f20c300-9121-456c-9d31-4a7b13092727_default\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/dimension-default\" xlink:from=\"loc_us-gaap_StatementBusinessSegmentsAxis_9f20c300-9121-456c-9d31-4a7b13092727\" xlink:to=\"loc_us-gaap_SegmentDomain_9f20c300-9121-456c-9d31-4a7b13092727_default\" xlink:type=\"arc\" order=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_SegmentDomain_4910c684-bd9b-471d-82c0-ac4ca1f732a0\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/dimension-domain\" xlink:from=\"loc_us-gaap_StatementBusinessSegmentsAxis_9f20c300-9121-456c-9d31-4a7b13092727\" xlink:to=\"loc_us-gaap_SegmentDomain_4910c684-bd9b-471d-82c0-ac4ca1f732a0\" xlink:type=\"arc\" order=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_UnregulatedEnergyMember_5bb48b66-5953-4a4b-b429-4a2f2d639c25\" xlink:href=\"cpk-20230930.xsd#cpk_UnregulatedEnergyMember\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_SegmentDomain_4910c684-bd9b-471d-82c0-ac4ca1f732a0\" xlink:to=\"loc_cpk_UnregulatedEnergyMember_5bb48b66-5953-4a4b-b429-4a2f2d639c25\" xlink:type=\"arc\" order=\"0\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_RegulatedEnergyMember_f139ce57-0df4-4a4b-af82-870790fe6913\" xlink:href=\"cpk-20230930.xsd#cpk_RegulatedEnergyMember\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_SegmentDomain_4910c684-bd9b-471d-82c0-ac4ca1f732a0\" xlink:to=\"loc_cpk_RegulatedEnergyMember_f139ce57-0df4-4a4b-af82-870790fe6913\" xlink:type=\"arc\" order=\"1\"/>\n  </link:definitionLink>\n  </link:linkbase>\n\n\n##Label linkbase document\n<?xml version='1.0' encoding='UTF-8'?>\n<link:linkbase xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd\"><link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedPeriodStartLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/netLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedNetLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedTerseLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedPeriodEndLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedTotalLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel\"/>\n  <link:labelLink xlink:role=\"http://www.xbrl.org/2003/role/link\" xlink:type=\"extended\"><link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRegulatoryLiabilities\" xlink:href=\"cpk-20230930.xsd#cpk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRegulatoryLiabilities\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_cpk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRegulatoryLiabilities\" xlink:to=\"lab_cpk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRegulatoryLiabilities\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_cpk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRegulatoryLiabilities_a921bba1-261c-4ee8-9b14-16cebbd85aac_terseLabel_en-US\" xlink:label=\"lab_cpk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRegulatoryLiabilities\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Regulatory Liabilities</link:label>\n    <link:label id=\"lab_cpk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRegulatoryLiabilities_label_en-US\" xlink:label=\"lab_cpk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRegulatoryLiabilities\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Regulatory Liabilities</link:label>\n    <link:label id=\"lab_cpk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRegulatoryLiabilities_documentation_en-US\" xlink:label=\"lab_cpk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRegulatoryLiabilities\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Regulatory Liabilities</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_LakeWalesPipelineAcquisitionMember\" xlink:href=\"cpk-20230930.xsd#cpk_LakeWalesPipelineAcquisitionMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_cpk_LakeWalesPipelineAcquisitionMember\" xlink:to=\"lab_cpk_LakeWalesPipelineAcquisitionMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_cpk_LakeWalesPipelineAcquisitionMember_c18ab531-d38f-4f12-b574-63574fd49adf_terseLabel_en-US\" xlink:label=\"lab_cpk_LakeWalesPipelineAcquisitionMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Lake Wales Pipeline Acquisition</link:label>\n    <link:label id=\"lab_cpk_LakeWalesPipelineAcquisitionMember_label_en-US\" xlink:label=\"lab_cpk_LakeWalesPipelineAcquisitionMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Lake Wales Pipeline Acquisition [Member]</link:label>\n    <link:label id=\"lab_cpk_LakeWalesPipelineAcquisitionMember_documentation_en-US\" xlink:label=\"lab_cpk_LakeWalesPipelineAcquisitionMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Lake Wales Pipeline Acquisition</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_ElktonGasMember\" xlink:href=\"cpk-20230930.xsd#cpk_ElktonGasMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_cpk_ElktonGasMember\" xlink:to=\"lab_cpk_ElktonGasMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_cpk_ElktonGasMember_b6d50b4c-8667-467c-bcbe-53c1f1b0ed78_terseLabel_en-US\" xlink:label=\"lab_cpk_ElktonGasMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Elkton Gas [Member]</link:label>\n    <link:label id=\"lab_cpk_ElktonGasMember_label_en-US\" xlink:label=\"lab_cpk_ElktonGasMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Elkton Gas [Member]</link:label>\n    <link:label id=\"lab_cpk_ElktonGasMember_documentation_en-US\" xlink:label=\"lab_cpk_ElktonGasMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Elkton Gas [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_GallonsAcquiredThroughAcquisition\" xlink:href=\"cpk-20230930.xsd#cpk_GallonsAcquiredThroughAcquisition\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_cpk_GallonsAcquiredThroughAcquisition\" xlink:to=\"lab_cpk_GallonsAcquiredThroughAcquisition\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_cpk_GallonsAcquiredThroughAcquisition_2c7c08bb-732f-48b4-91f3-a1777b5228ac_terseLabel_en-US\" xlink:label=\"lab_cpk_GallonsAcquiredThroughAcquisition\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Gallons acquired through acquisition</link:label>\n    <link:label id=\"lab_cpk_GallonsAcquiredThroughAcquisition_label_en-US\" xlink:label=\"lab_cpk_GallonsAcquiredThroughAcquisition\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Gallons acquired through acquisition</link:label>\n    <link:label id=\"lab_cpk_GallonsAcquiredThroughAcquisition_documentation_en-US\" xlink:label=\"lab_cpk_GallonsAcquiredThroughAcquisition\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Gallons acquired through acquisition</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_Numberofcustomersacquiredthroughacquisition\" xlink:href=\"cpk-20230930.xsd#cpk_Numberofcustomersacquiredthroughacquisition\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_cpk_Numberofcustomersacquiredthroughacquisition\" xlink:to=\"lab_cpk_Numberofcustomersacquiredthroughacquisition\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_cpk_Numberofcustomersacquiredthroughacquisition_55a28daf-6102-44a2-90ae-2f81c59eb260_terseLabel_en-US\" xlink:label=\"lab_cpk_Numberofcustomersacquiredthroughacquisition\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Number of customers acquired through acquisition</link:label>\n    <link:label id=\"lab_cpk_Numberofcustomersacquiredthroughacquisition_label_en-US\" xlink:label=\"lab_cpk_Numberofcustomersacquiredthroughacquisition\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Number of customers acquired through acquisition</link:label>\n    <link:label id=\"lab_cpk_Numberofcustomersacquiredthroughacquisition_documentation_en-US\" xlink:label=\"lab_cpk_Numberofcustomersacquiredthroughacquisition\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Number of customers acquired through acquisition</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_OperatingIncomeLoss\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingIncomeLoss\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_OperatingIncomeLoss\" xlink:to=\"lab_us-gaap_OperatingIncomeLoss\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_OperatingIncomeLoss_8525b1b2-ca0f-4903-859c-a5cc40a0ef1d_terseLabel_en-US\" xlink:label=\"lab_us-gaap_OperatingIncomeLoss\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Total operating income</link:label>\n    <link:label id=\"lab_us-gaap_OperatingIncomeLoss_c24d5b0c-4e01-4aa0-bbec-81e538732802_netLabel_en-US\" xlink:label=\"lab_us-gaap_OperatingIncomeLoss\" xlink:role=\"http://www.xbrl.org/2009/role/netLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Operating Income (Loss)</link:label>\n    <link:label id=\"lab_us-gaap_OperatingIncomeLoss_label_en-US\" xlink:label=\"lab_us-gaap_OperatingIncomeLoss\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Operating Income (Loss)</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_OtherMember\" xlink:href=\"cpk-20230930.xsd#cpk_OtherMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_cpk_OtherMember\" xlink:to=\"lab_cpk_OtherMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_cpk_OtherMember_0f4e81bc-b6a7-4ef1-998a-37acf207a22e_terseLabel_en-US\" xlink:label=\"lab_cpk_OtherMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Other [Member]</link:label>\n    <link:label id=\"lab_cpk_OtherMember_label_en-US\" xlink:label=\"lab_cpk_OtherMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Other [Member]</link:label>\n    <link:label id=\"lab_cpk_OtherMember_documentation_en-US\" xlink:label=\"lab_cpk_OtherMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Other [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_RegulatedEnergyMember\" xlink:href=\"cpk-20230930.xsd#cpk_RegulatedEnergyMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_cpk_RegulatedEnergyMember\" xlink:to=\"lab_cpk_RegulatedEnergyMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_cpk_RegulatedEnergyMember_220bd4cf-84cc-49c6-ae02-2001b9658aaf_terseLabel_en-US\" xlink:label=\"lab_cpk_RegulatedEnergyMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Regulated Energy [Member]</link:label>\n    <link:label id=\"lab_cpk_RegulatedEnergyMember_label_en-US\" xlink:label=\"lab_cpk_RegulatedEnergyMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Regulated Energy [Member]</link:label>\n    <link:label id=\"lab_cpk_RegulatedEnergyMember_documentation_en-US\" xlink:label=\"lab_cpk_RegulatedEnergyMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Regulated energy.</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_SegmentDomain\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_SegmentDomain\" xlink:to=\"lab_us-gaap_SegmentDomain\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_SegmentDomain_e2f48a1a-dabd-46b0-8ba2-5517e59f8df6_terseLabel_en-US\" xlink:label=\"lab_us-gaap_SegmentDomain\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Segments [Domain]</link:label>\n    <link:label id=\"lab_us-gaap_SegmentDomain_d9f87af3-1510-4e8c-bd2b-810b13c6f442_verboseLabel_en-US\" xlink:label=\"lab_us-gaap_SegmentDomain\" xlink:role=\"http://www.xbrl.org/2003/role/verboseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Segment [Domain]</link:label>\n    <link:label id=\"lab_us-gaap_SegmentDomain_label_en-US\" xlink:label=\"lab_us-gaap_SegmentDomain\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Segments [Domain]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems\" xlink:to=\"lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_19591350-6da6-4ed5-a0ae-bb8261851e6a_terseLabel_en-US\" xlink:label=\"lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]</link:label>\n    <link:label id=\"lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_label_en-US\" xlink:label=\"lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_BusinessCombinationWorkingCapital\" xlink:href=\"cpk-20230930.xsd#cpk_BusinessCombinationWorkingCapital\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_cpk_BusinessCombinationWorkingCapital\" xlink:to=\"lab_cpk_BusinessCombinationWorkingCapital\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_cpk_BusinessCombinationWorkingCapital_70b6170f-c28d-4634-9318-444e3dbbe6f7_terseLabel_en-US\" xlink:label=\"lab_cpk_BusinessCombinationWorkingCapital\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Business Combination, Working Capital</link:label>\n    <link:label id=\"lab_cpk_BusinessCombinationWorkingCapital_label_en-US\" xlink:label=\"lab_cpk_BusinessCombinationWorkingCapital\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Business Combination, Working Capital</link:label>\n    <link:label id=\"lab_cpk_BusinessCombinationWorkingCapital_documentation_en-US\" xlink:label=\"lab_cpk_BusinessCombinationWorkingCapital\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Business Combination, Working Capital</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_IntersegmentEliminationMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IntersegmentEliminationMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_IntersegmentEliminationMember\" xlink:to=\"lab_us-gaap_IntersegmentEliminationMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_IntersegmentEliminationMember_89c52b29-fd4f-4a88-b8f6-ce704d313a31_terseLabel_en-US\" xlink:label=\"lab_us-gaap_IntersegmentEliminationMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Intersegment Eliminations [Member]</link:label>\n    <link:label id=\"lab_us-gaap_IntersegmentEliminationMember_label_en-US\" xlink:label=\"lab_us-gaap_IntersegmentEliminationMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Intersegment Eliminations [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract\" xlink:to=\"lab_us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract_56fcace7-df6e-4580-b00e-ab595c676e65_terseLabel_en-US\" xlink:label=\"lab_us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Discontinued Operations and Disposal Groups [Abstract]</link:label>\n    <link:label id=\"lab_us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract_label_en-US\" xlink:label=\"lab_us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Discontinued Operations and Disposal Groups [Abstract]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_OtherSegmentsAndIntersegmentsEliminationsMember\" xlink:href=\"cpk-20230930.xsd#cpk_OtherSegmentsAndIntersegmentsEliminationsMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_cpk_OtherSegmentsAndIntersegmentsEliminationsMember\" xlink:to=\"lab_cpk_OtherSegmentsAndIntersegmentsEliminationsMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_cpk_OtherSegmentsAndIntersegmentsEliminationsMember_04de8d1f-fb38-4ae1-b934-247300978659_verboseLabel_en-US\" xlink:label=\"lab_cpk_OtherSegmentsAndIntersegmentsEliminationsMember\" xlink:role=\"http://www.xbrl.org/2003/role/verboseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Other Segments And Intersegments Eliminations [Member]</link:label>\n    <link:label id=\"lab_cpk_OtherSegmentsAndIntersegmentsEliminationsMember_ed5a3475-9cbb-44b6-aeb3-f96a2ecb2439_terseLabel_en-US\" xlink:label=\"lab_cpk_OtherSegmentsAndIntersegmentsEliminationsMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Other and eliminations [Member]</link:label>\n    <link:label id=\"lab_cpk_OtherSegmentsAndIntersegmentsEliminationsMember_label_en-US\" xlink:label=\"lab_cpk_OtherSegmentsAndIntersegmentsEliminationsMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Other Segments And Intersegments Eliminations [Member]</link:label>\n    <link:label id=\"lab_cpk_OtherSegmentsAndIntersegmentsEliminationsMember_documentation_en-US\" xlink:label=\"lab_cpk_OtherSegmentsAndIntersegmentsEliminationsMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Other segments and intersegments eliminations.</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_PeninsulaPipelineCompanyMember\" xlink:href=\"cpk-20230930.xsd#cpk_PeninsulaPipelineCompanyMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_cpk_PeninsulaPipelineCompanyMember\" xlink:to=\"lab_cpk_PeninsulaPipelineCompanyMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_cpk_PeninsulaPipelineCompanyMember_f75280b6-afd5-4962-8ba9-8a526af7d9e7_terseLabel_en-US\" xlink:label=\"lab_cpk_PeninsulaPipelineCompanyMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Peninsula Pipeline Company [Member]</link:label>\n    <link:label id=\"lab_cpk_PeninsulaPipelineCompanyMember_label_en-US\" xlink:label=\"lab_cpk_PeninsulaPipelineCompanyMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Peninsula Pipeline Company [Member]</link:label>\n    <link:label id=\"lab_cpk_PeninsulaPipelineCompanyMember_documentation_en-US\" xlink:label=\"lab_cpk_PeninsulaPipelineCompanyMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Peninsula Pipeline Company [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_FloridaCityGasMember\" xlink:href=\"cpk-20230930.xsd#cpk_FloridaCityGasMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_cpk_FloridaCityGasMember\" xlink:to=\"lab_cpk_FloridaCityGasMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_cpk_FloridaCityGasMember_76d2dea5-317a-49cd-aa4c-0532031fd8c4_terseLabel_en-US\" xlink:label=\"lab_cpk_FloridaCityGasMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Florida City Gas</link:label>\n    <link:label id=\"lab_cpk_FloridaCityGasMember_label_en-US\" xlink:label=\"lab_cpk_FloridaCityGasMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Florida City Gas [Member]</link:label>\n    <link:label id=\"lab_cpk_FloridaCityGasMember_documentation_en-US\" xlink:label=\"lab_cpk_FloridaCityGasMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Florida City Gas</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_srt_RangeAxis\" xlink:href=\"https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_srt_RangeAxis\" xlink:to=\"lab_srt_RangeAxis\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_srt_RangeAxis_7ccc65b5-ce4a-4c8d-9969-b96608f70038_terseLabel_en-US\" xlink:label=\"lab_srt_RangeAxis\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Statistical Measurement [Axis]</link:label>\n    <link:label id=\"lab_srt_RangeAxis_label_en-US\" xlink:label=\"lab_srt_RangeAxis\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Statistical Measurement [Axis]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis\" xlink:to=\"lab_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_58cfb3e2-ac4b-4c2f-bd8e-e78f40132ede_terseLabel_en-US\" xlink:label=\"lab_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Project Name [Axis]</link:label>\n    <link:label id=\"lab_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_label_en-US\" xlink:label=\"lab_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Project [Axis]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_NewberryExpansionMember\" xlink:href=\"cpk-20230930.xsd#cpk_NewberryExpansionMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_cpk_NewberryExpansionMember\" xlink:to=\"lab_cpk_NewberryExpansionMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_cpk_NewberryExpansionMember_2a3eba9f-eae0-4c16-aa5a-9708c93d4231_terseLabel_en-US\" xlink:label=\"lab_cpk_NewberryExpansionMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Newberry Expansion</link:label>\n    <link:label id=\"lab_cpk_NewberryExpansionMember_label_en-US\" xlink:label=\"lab_cpk_NewberryExpansionMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Newberry Expansion [Member]</link:label>\n    <link:label id=\"lab_cpk_NewberryExpansionMember_documentation_en-US\" xlink:label=\"lab_cpk_NewberryExpansionMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Newberry Expansion</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_OperatingSegmentsMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingSegmentsMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_OperatingSegmentsMember\" xlink:to=\"lab_us-gaap_OperatingSegmentsMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_OperatingSegmentsMember_ede3e34e-de5c-49e9-ae45-85066016a575_terseLabel_en-US\" xlink:label=\"lab_us-gaap_OperatingSegmentsMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Operating Revenues, Unaffiliated Customers [Member]</link:label>\n    <link:label id=\"lab_us-gaap_OperatingSegmentsMember_label_en-US\" xlink:label=\"lab_us-gaap_OperatingSegmentsMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Operating Segments [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet\" xlink:to=\"lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_5b12781b-4969-4c99-9cb7-cc06c2010dae_terseLabel_en-US\" xlink:label=\"lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net</link:label>\n    <link:label id=\"lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_label_en-US\" xlink:label=\"lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_TwinLakesExpansionMember\" xlink:href=\"cpk-20230930.xsd#cpk_TwinLakesExpansionMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_cpk_TwinLakesExpansionMember\" xlink:to=\"lab_cpk_TwinLakesExpansionMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_cpk_TwinLakesExpansionMember_58df400c-81c5-4db3-87ba-e29e567ee772_terseLabel_en-US\" xlink:label=\"lab_cpk_TwinLakesExpansionMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Twin Lakes Expansion</link:label>\n    <link:label id=\"lab_cpk_TwinLakesExpansionMember_label_en-US\" xlink:label=\"lab_cpk_TwinLakesExpansionMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Twin Lakes Expansion [Member]</link:label>\n    <link:label id=\"lab_cpk_TwinLakesExpansionMember_documentation_en-US\" xlink:label=\"lab_cpk_TwinLakesExpansionMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Twin Lakes Expansion</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_BusinessAcquisitionAxis\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAxis\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_BusinessAcquisitionAxis\" xlink:to=\"lab_us-gaap_BusinessAcquisitionAxis\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_BusinessAcquisitionAxis_2d155bd2-6547-4da9-b8ea-0c58c02cc2d1_terseLabel_en-US\" xlink:label=\"lab_us-gaap_BusinessAcquisitionAxis\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Business Acquisition [Axis]</link:label>\n    <link:label id=\"lab_us-gaap_BusinessAcquisitionAxis_label_en-US\" xlink:label=\"lab_us-gaap_BusinessAcquisitionAxis\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Business Acquisition [Axis]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_cpk_TransactionRelatedExpenses\" xlink:href=\"cpk-20230930.xsd#cpk_TransactionRelatedExpenses\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_cpk_TransactionRelatedExpenses\" xlink:to=\"lab_cpk_TransactionRelatedExpenses\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_cpk_TransactionRelatedExpenses_1297ba3e-82c8-48cf-935d-0334a349c985_terseLabel_en-US\" xlink:label=\"lab_cpk_TransactionRelatedExpenses\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Transaction-related expenses</link:label>\n    <link:label id=\"lab_cpk_TransactionRelatedExpenses_label_en-US\" xlink:label=\"lab_cpk_TransactionRelatedExpenses\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Transaction-related expenses</link:label>\n    <link:label id=\"lab_cpk_TransactionRelatedExpenses_documentation_en-US\" xlink:label=\"lab_cpk_TransactionRelatedExpenses\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Transaction-related expenses</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment\" xlink:to=\"lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_8f2b8c9c-4262-42d1-920e-fb3113f11fc9_terseLabel_en-US\" xlink:label=\"lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment</link:label>\n    <link:label id=\"lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_label_en-US\" xlink:label\n\n##Instance document\n<?xml version='1.0' encoding='UTF-8'?>\n<xbrl xmlns=\"http://www.xbrl.org/2003/instance\" xmlns:cpk=\"http://www.chpk.com/20230930\" xmlns:dei=\"http://xbrl.sec.gov/dei/2023\" xmlns:iso4217=\"http://www.xbrl.org/2003/iso4217\" xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xmlns:srt=\"http://fasb.org/srt/2023\" xmlns:us-gaap=\"http://fasb.org/us-gaap/2023\" xmlns:utr=\"http://www.xbrl.org/2009/utr\" xmlns:xbrldi=\"http://xbrl.org/2006/xbrldi\" xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xml:lang=\"en-US\"><link:schemaRef xlink:href=\"cpk-20230930.xsd\" xlink:type=\"simple\"/>\n\t<context id=\"c-87\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:BusinessAcquisitionAxis\">cpk:PlanetFoundMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <instant>2023-09-30</instant>\n        </period>\n    </context>\n\t<context id=\"c-4\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n        </entity>\n        <period>\n            <startDate>2023-07-01</startDate>\n            <endDate>2023-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-5\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n        </entity>\n        <period>\n            <startDate>2022-07-01</startDate>\n            <endDate>2022-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-1\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n        </entity>\n        <period>\n            <startDate>2023-01-01</startDate>\n            <endDate>2023-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-6\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n        </entity>\n        <period>\n            <startDate>2022-01-01</startDate>\n            <endDate>2022-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-174\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementBusinessSegmentsAxis\">cpk:RegulatedEnergyMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"dei:LegalEntityAxis\">cpk:OtherMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-07-01</startDate>\n            <endDate>2023-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-161\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                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</period>\n    </context>\n\t<context id=\"c-262\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementBusinessSegmentsAxis\">cpk:RegulatedEnergyMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"dei:LegalEntityAxis\">cpk:OtherMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-01-01</startDate>\n            <endDate>2023-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-249\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementBusinessSegmentsAxis\">cpk:UnregulatedEnergyMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"dei:LegalEntityAxis\">cpk:OtherMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-01-01</startDate>\n            <endDate>2023-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-263\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementBusinessSegmentsAxis\">cpk:RegulatedEnergyMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"dei:LegalEntityAxis\">cpk:OtherMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2022-01-01</startDate>\n            <endDate>2022-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-253\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementBusinessSegmentsAxis\">cpk:UnregulatedEnergyMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"dei:LegalEntityAxis\">cpk:OtherMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2022-01-01</startDate>\n            <endDate>2022-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-328\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:ConsolidationItemsAxis\">us-gaap:OperatingSegmentsMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementBusinessSegmentsAxis\">cpk:RegulatedEnergyMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-07-01</startDate>\n         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scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementBusinessSegmentsAxis\">cpk:RegulatedEnergyMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-07-01</startDate>\n            <endDate>2023-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-171\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementBusinessSegmentsAxis\">cpk:RegulatedEnergyMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2022-07-01</startDate>\n            <endDate>2022-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-256\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementBusinessSegmentsAxis\">cpk:RegulatedEnergyMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-01-01</startDate>\n            <endDate>2023-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-259\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementBusinessSegmentsAxis\">cpk:RegulatedEnergyMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2022-01-01</startDate>\n            <endDate>2022-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-169\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementBusinessSegmentsAxis\">cpk:UnregulatedEnergyMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-07-01</startDate>\n            <endDate>2023-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-172\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementBusinessSegmentsAxis\">cpk:UnregulatedEnergyMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2022-07-01</startDate>\n            <endDate>2022-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-257\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementBusinessSegmentsAxis\">cpk:UnregulatedEnergyMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-01-01</startDate>\n            <endDate>2023-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-260\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementBusinessSegmentsAxis\">cpk:UnregulatedEnergyMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2022-01-01</startDate>\n            <endDate>2022-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-162\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementBusinessSegmentsAxis\">cpk:OtherSegmentsAndIntersegmentsEliminationsMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-07-01</startDate>\n            <endDate>2023-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-166\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementBusinessSegmentsAxis\">cpk:OtherSegmentsAndIntersegmentsEliminationsMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2022-07-01</startDate>\n            <endDate>2022-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-250\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementBusinessSegmentsAxis\">cpk:OtherSegmentsAndIntersegmentsEliminationsMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-01-01</startDate>\n            <endDate>2023-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-254\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementBusinessSegmentsAxis\">cpk:OtherSegmentsAndIntersegmentsEliminationsMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2022-01-01</startDate>\n            <endDate>2022-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-84\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:BusinessAcquisitionAxis\">cpk:FloridaCityGasMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-01-01</startDate>\n            <endDate>2023-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-86\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:BusinessAcquisitionAxis\">cpk:PlanetFoundMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-01-01</startDate>\n            <endDate>2023-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-300\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:StatementGeographicalAxis\">cpk:PeninsulaPipelineCompanyMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis\">cpk:BeachsideExpansionMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-01-01</startDate>\n            <endDate>2023-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-302\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:StatementGeographicalAxis\">cpk:PeninsulaPipelineCompanyMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis\">cpk:TwinLakesExpansionMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-01-01</startDate>\n            <endDate>2023-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-303\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:StatementGeographicalAxis\">cpk:PeninsulaPipelineCompanyMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis\">cpk:LakeWalesPipelineAcquisitionMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-01-01</startDate>\n            <endDate>2023-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-304\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:StatementGeographicalAxis\">cpk:PeninsulaPipelineCompanyMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis\">cpk:NewberryExpansionMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-01-01</startDate>\n            <endDate>2023-09-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-85\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:BusinessAcquisitionAxis\">cpk:FloridaCityGasMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <instant>2023-09-30</instant>\n        </period>\n    </context>\n\t<context id=\"c-529\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0000019745</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:BusinessAcquisitionAxis\">cpk:FloridaCityGasMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementBusinessSegmentsAxis\">cpk:RegulatedEnergyMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <instant>2023-09-30</instant>\n        </period>\n    </context>\n\t<unit id=\"usdPerShare\">\n        <divide>\n            <unitNumerator>\n                <measure>iso4217:USD</measure>\n            </unitNumerator>\n            <unitDenominator>\n                <measure>shares</measure>\n            </unitDenominator>\n        </divide>\n    </unit>\n\t<unit id=\"shares\">\n        <measure>shares</measure>\n    </unit>\n\t<unit id=\"usd\">\n        <measure>iso4217:USD</measure>\n    </unit>\n\t<unit id=\"number\">\n        <measure>pure</measure>\n    </unit>\n\t<unit id=\"mi\">\n        <measure>utr:mi</measure>\n    </unit>\n\t<unit id=\"dekatherm\">\n        <measure>cpk:Dekatherm</measure>\n    </unit>\n\t<unit id=\"site\">\n        <measure>cpk:site</measure>\n    </unit>\n\t<unit id=\"gal\">\n        <measure>utr:gal</measure>\n    </unit>\n\t<us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment contextRef=\"c-87\" decimals=\"-5\" id=\"f-\n\n##US GAAP Taxonomy\nNone\n\nQuestion: What erroneous relationship type exists between BusinessAcquisitionAxis and BridgeLoanMember, based on the provided XBRL filing and the US GAAP taxonomy?\nAnswer:\n\n    "

Answer: "CombinationErr"