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ORGANIZATION AND DESCRIPTION OF BUSINESS (Narrative) (Details) |  |  | 1 Months Ended | 12 Months Ended | 1 Months Ended | 0 Months Ended | 1 Months Ended |  | 1 Months Ended |  | 12 Months Ended | 0 Months Ended | 1 Months Ended |  | 1 Months Ended | 0 Months Ended |  | 0 Months Ended |  |  | 1 Months Ended | 0 Months Ended | 1 Months Ended | 0 Months Ended | 1 Months Ended | 12 Months Ended |  |  |  |  | 1 Months Ended |  | 1 Months Ended |  | 1 Months Ended |  | 0 Months Ended | 1 Months Ended | 0 Months Ended | 1 Months Ended |  | 1 Months Ended
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Dec. 31, 2014 USD ($) | Dec. 31, 2014 CNY | Jun. 28, 2014 USD ($) | Jun. 28, 2014 CNY | Sep. 24, 2014 Assets Repurchase Agreement [Member] USD ($) | Dec. 31, 2014 Rongfeng [Member] | Mar. 26, 2014 Baoliyuan [Member] | Mar. 26, 2014 Baoliyuan [Member] Payment Period One [Member] USD ($) | Mar. 26, 2014 Baoliyuan [Member] Payment Period One [Member] CNY | Mar. 26, 2014 Baoliyuan [Member] Payment Period Two [Member] USD ($) | Mar. 26, 2014 Baoliyuan [Member] Payment Period Two [Member] CNY | Sep. 24, 2014 TRT System [Member] USD ($) | Sep. 24, 2014 TRT System [Member] CNY | Dec. 22, 2014 Zhonggang [Member] USD ($) | Dec. 22, 2014 Zhonggang [Member] CNY | Sep. 11, 2013 Biomass Power Generation Asset Transfer Agreement [Member] USD ($) MW | Sep. 11, 2013 Biomass Power Generation Asset Transfer Agreement [Member] CNY | Jun. 29, 2010 Biomass Power Generation Project Lease Agreement [Member] USD ($) MW | Jun. 29, 2010 Biomass Power Generation Project Lease Agreement [Member] CNY | Dec. 22, 2014 Xi'an Zhonghong New Energy Technology Co., Ltd [Member] USD ($) | Dec. 22, 2014 Xi'an Zhonghong New Energy Technology Co., Ltd [Member] CNY | Jul. 19, 2013 Xi'an Zhonghong New Energy Technology Co., Ltd [Member] USD ($) | Jul. 19, 2013 Xi'an Zhonghong New Energy Technology Co., Ltd [Member] CNY | Jul. 18, 2013 Xi'an Zhonghong New Energy Technology Co., Ltd [Member] | Jul. 24, 2013 Boxing County Chengli Gas Supply Co Ltd [Member] | Jul. 22, 2013 Boxing County Chengli Gas Supply Co Ltd [Member] USD ($) | Jul. 22, 2013 Boxing County Chengli Gas Supply Co Ltd [Member] CNY | Jul. 22, 2013 Boxing County Chengli Gas Supply Co Ltd [Member] EPC General Contractor Agreement [Member] USD ($) | Jul. 22, 2013 Boxing County Chengli Gas Supply Co Ltd [Member] EPC General Contractor Agreement [Member] CNY | Dec. 31, 2014 Waste Heat Power Generation Projects [Member] USD ($) | Oct. 08, 2012 Shenqiu Project [Member] USD ($) | Oct. 08, 2012 Shenqiu Project [Member] CNY | Sep. 28, 2011 Shenqiu Project [Member] USD ($) MW | Sep. 28, 2011 Shenqiu Project [Member] CNY | May 25, 2011 Shenqiu Project [Member] USD ($) | May 25, 2011 Shenqiu Project [Member] CNY | Jun. 25, 2013 Hongyuan Huifu [Member] | Jul. 24, 2013 Chengli Waste Heat Power Generation Projects [Member] | Jul. 19, 2013 Tianyu Waste Heat Power Generation Project [Member] | Dec. 06, 2013 Zhongtai Waste Heat Power Generation Energy Management Cooperative Agreement [Member] | Apr. 14, 2009 Erdos Metallurgy Company Limited [Member] USD ($) | Apr. 14, 2009 Erdos Metallurgy Company Limited [Member] CNY | Apr. 14, 2009 Erdos Metallurgy Company Limited [Member] Initial Investment [Member] USD ($) | Apr. 14, 2009 Erdos Metallurgy Company Limited [Member] Initial Investment [Member] CNY | Jun. 15, 2013 Erdos Tch [Member] USD ($) | Jun. 15, 2013 Erdos Tch [Member] CNY | Aug. 31, 2013 Erdos Tch [Member] USD ($) | Apr. 14, 2009 Erdos Tch [Member] | Aug. 31, 2013 Erdos Tch [Member] Phase One [Member] MW | Aug. 31, 2013 Erdos Tch [Member] Phase Two [Member] MW | Feb. 28, 2011 Erdos Tch [Member] Shanxi Datong Coal Group Steel Co Ltd [Member] | Apr. 14, 2009 Erdos Tch [Member] Initial Investment [Member] | Apr. 14, 2009 Erdos Tch [Member] After Return Of Initial Investment [Member] | Feb. 28, 2011 Erdos Tch [Member] Location One [Member] Shanxi Datong Coal Group Steel Co Ltd [Member] | Oct. 08, 2012 Xian Tch [Member] | Jul. 31, 2013 Xian Tch [Member] USD ($) | Jun. 25, 2013 Xian Tch [Member] | Dec. 31, 2014 Xian Tch [Member] | Jun. 28, 2014 Xian Tch [Member] USD ($) | Jun. 28, 2014 Xian Tch [Member] CNY | Aug. 31, 2013 Xian Tch [Member] | Apr. 14, 2009 Xian Tch [Member] | Dec. 22, 2014 Xian Tch [Member] Waste Heat Power Generation Projects [Member] USD ($) | Dec. 22, 2014 Xian Tch [Member] Waste Heat Power Generation Projects [Member] CNY | Sep. 30, 2010 Xian Tch [Member] Clean Development Mechanism [Member] | Feb. 28, 2011 Xian Tch [Member] Shanxi Datong Coal Group Steel Co Ltd [Member] USD ($) | Feb. 28, 2011 Xian Tch [Member] Shanxi Datong Coal Group Steel Co Ltd [Member] CNY | May 31, 2013 Xian Tch [Member] Sinosteel Jilin Ferroalloys Co Ltd Jitie [Member] USD ($) MW | May 31, 2013 Xian Tch [Member] Sinosteel Jilin Ferroalloys Co Ltd Jitie [Member] CNY | Jun. 25, 2013 Xian Tch [Member] Hongyuan Huifu [Member] USD ($) | Jun. 25, 2013 Xian Tch [Member] Hongyuan Huifu [Member] CNY | Jun. 28, 2014 Xian Tch [Member] Qitaihe City Boli Yida Coal Selection Co Ltd Yida [Member] USD ($) | Jun. 28, 2014 Xian Tch [Member] Qitaihe City Boli Yida Coal Selection Co Ltd Yida [Member] CNY | Dec. 31, 2014 Xian Tch [Member] Qitaihe City Boli Yida Coal Selection Co Ltd Yida [Member] USD ($) | Apr. 14, 2009 Xian Tch [Member] Initial Investment [Member] | Apr. 14, 2009 Xian Tch [Member] After Return Of Initial Investment [Member] | Oct. 08, 2012 Xian Tch [Member] Biomass Power Generation System [Member] USD ($) | Oct. 08, 2012 Xian Tch [Member] Biomass Power Generation System [Member] CNY | Mar. 30, 2013 Xian Tch [Member] Biomass Power Generation System [Member] | May 31, 2013 Xian Tch [Member] Minimum [Member] Sinosteel Jilin Ferroalloys Co Ltd Jitie [Member] MW | May 31, 2013 Xian Tch [Member] Maximum [Member] Sinosteel Jilin Ferroalloys Co Ltd Jitie [Member] MW | Jul. 18, 2013 Huahong New Energy Technology Co Ltd [Member] | Sep. 30, 2010 Zhongbao [Member] MW | Sep. 30, 2010 Zhongbao [Member] Clean Development Mechanism [Member] | Jun. 10, 2013 Xian TCH And Shanxi Datong [Member] First Five Years [Member] USD ($) | Jun. 10, 2013 Xian TCH And Shanxi Datong [Member] First Five Years [Member] CNY | Jun. 10, 2013 Xian TCH And Shanxi Datong [Member] Second Five Years [Member] USD ($) | Jun. 10, 2013 Xian TCH And Shanxi Datong [Member] Second Five Years [Member] CNY | Jun. 10, 2013 Xian TCH And Shanxi Datong [Member] Minimum Ten Years [Member] USD ($) | Jun. 10, 2013 Xian TCH And Shanxi Datong [Member] Minimum Ten Years [Member] CNY | Jun. 10, 2013 Xian TCH And Shanxi Datong [Member] MaximumTen Years [Member] USD ($) | Jun. 10, 2013 Xian TCH And Shanxi Datong [Member] MaximumTen Years [Member] CNY | Jul. 18, 2013 HYREF Fund [Member] USD ($) | Jul. 18, 2013 HYREF Fund [Member] CNY | Jul. 18, 2013 HYREF Fund [Member] China Orient Asset Management Co., Ltd [Member] USD ($) | Jul. 18, 2013 HYREF Fund [Member] China Orient Asset Management Co., Ltd [Member] CNY | Jul. 18, 2013 HYREF Fund [Member] Xi'an TCH Limited Partners [Member] USD ($) | Jul. 18, 2013 HYREF Fund [Member] Xi'an TCH Limited Partners [Member] CNY | Jul. 18, 2013 HYREF Fund [Member] Hongyuan Huifu [Member] USD ($) | Jul. 18, 2013 HYREF Fund [Member] Hongyuan Huifu [Member] CNY | Jun. 25, 2013 Hongyuan Recycling Energy Investment Management Beijing Co Ltd [Member] CNY
Organization and Nature Of Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capacity of plant |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 creg_PlantCapacity / creg_ProjectAxis = creg_ShenqiuProjectMember | 12 creg_PlantCapacity / creg_ProjectAxis = creg_ShenqiuProjectMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 creg_PlantCapacity / dei_LegalEntityAxis = creg_ErdosTchMember / creg_ProjectAxis = creg_ShanxiDatongCoalGroupSteelCoLtdMember |  |  | 15 creg_PlantCapacity / dei_EntityByLocationAxis = creg_LocationOneMember / dei_LegalEntityAxis = creg_ErdosTchMember / creg_ProjectAxis = creg_ShanxiDatongCoalGroupSteelCoLtdMember | 24 creg_PlantCapacity / dei_LegalEntityAxis = creg_XianTchMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15 creg_PlantCapacity / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_QitaiheCityBoliYidaCoalSelectionCoLtdYidaMember | 15 creg_PlantCapacity / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_QitaiheCityBoliYidaCoalSelectionCoLtdYidaMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term of joint ventures |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20 years | 20 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 79,000,000 us-gaap_InvestmentOwnedAtCost / dei_LegalEntityAxis = creg_ErdosMetallurgyCompanyLimitedMember | 500,000,000 us-gaap_InvestmentOwnedAtCost / dei_LegalEntityAxis = creg_ErdosMetallurgyCompanyLimitedMember | $ 17,550,000 us-gaap_InvestmentOwnedAtCost / dei_LegalEntityAxis = creg_ErdosMetallurgyCompanyLimitedMember / us-gaap_StatementScenarioAxis = creg_InitialInvestmentMember | 120,000,000 us-gaap_InvestmentOwnedAtCost / dei_LegalEntityAxis = creg_ErdosMetallurgyCompanyLimitedMember / us-gaap_StatementScenarioAxis = creg_InitialInvestmentMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 490,000 us-gaap_InvestmentOwnedAtCost / dei_LegalEntityAxis = creg_XianTchMember | 3,000,000 us-gaap_InvestmentOwnedAtCost / dei_LegalEntityAxis = creg_XianTchMember |  |  |  |  |  | $ 28,600,000 us-gaap_InvestmentOwnedAtCost / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_ShanxiDatongCoalGroupSteelCoLtdMember | 180,000,000 us-gaap_InvestmentOwnedAtCost / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_ShanxiDatongCoalGroupSteelCoLtdMember | $ 9,710,000 us-gaap_InvestmentOwnedAtCost / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_SinosteelJilinFerroalloysCoLtdJitieMember | 60,000,000 us-gaap_InvestmentOwnedAtCost / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_SinosteelJilinFerroalloysCoLtdJitieMember |  |  | $ 18,690,000 us-gaap_InvestmentOwnedAtCost / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_QitaiheCityBoliYidaCoalSelectionCoLtdYidaMember | 115,000,000 us-gaap_InvestmentOwnedAtCost / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_QitaiheCityBoliYidaCoalSelectionCoLtdYidaMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contribution percentage in total investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 90.00%creg_PercentageOfCapitalContribution / creg_LimitedPartnersAxis = creg_XianZhonghongNewEnergyTechnologyCoMember | 90.00%creg_PercentageOfCapitalContribution / creg_LimitedPartnersAxis = creg_XianZhonghongNewEnergyTechnologyCoMember | 90.00%creg_PercentageOfCapitalContribution / creg_LimitedPartnersAxis = creg_XianZhonghongNewEnergyTechnologyCoMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7.00%creg_PercentageOfCapitalContribution / dei_LegalEntityAxis = creg_ErdosTchMember | 7.00%creg_PercentageOfCapitalContribution / dei_LegalEntityAxis = creg_ErdosTchMember |  | 7.00%creg_PercentageOfCapitalContribution / dei_LegalEntityAxis = creg_ErdosTchMember |  |  |  |  |  |  |  |  |  |  |  |  |  | 93.00%creg_PercentageOfCapitalContribution / dei_LegalEntityAxis = creg_XianTchMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Profit distribution percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 80.00%creg_PercentageShareOfGainLossFromJointVenture / creg_ProjectAxis = creg_HongyuanHuifuMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.00%creg_PercentageShareOfGainLossFromJointVenture / dei_LegalEntityAxis = creg_ErdosTchMember / us-gaap_StatementScenarioAxis = creg_InitialInvestmentMember | 40.00%creg_PercentageShareOfGainLossFromJointVenture / dei_LegalEntityAxis = creg_ErdosTchMember / us-gaap_StatementScenarioAxis = creg_AfterReturnOfInitialInvestmentMember |  |  |  | 20.00%creg_PercentageShareOfGainLossFromJointVenture / dei_LegalEntityAxis = creg_XianTchMember |  |  |  |  |  |  |  | 40.00%creg_PercentageShareOfGainLossFromJointVenture / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_CleanDevelopmentMechanismMember |  |  |  |  |  |  |  |  |  | 80.00%creg_PercentageShareOfGainLossFromJointVenture / dei_LegalEntityAxis = creg_XianTchMember / us-gaap_StatementScenarioAxis = creg_InitialInvestmentMember | 60.00%creg_PercentageShareOfGainLossFromJointVenture / dei_LegalEntityAxis = creg_XianTchMember / us-gaap_StatementScenarioAxis = creg_AfterReturnOfInitialInvestmentMember |  |  |  |  |  |  |  | 60.00%creg_PercentageShareOfGainLossFromJointVenture / dei_LegalEntityAxis = creg_ZhongbaoMember / creg_ProjectAxis = creg_CleanDevelopmentMechanismMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 40.00%creg_PercentageShareOfGainLossFromJointVenture / dei_LegalEntityAxis = creg_HongyuanRecyclingEnergyInvestmentManagementBeijingCoLtdMember
Construction cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,290,000 us-gaap_ConstructionAndDevelopmentCosts / dei_LegalEntityAxis = creg_ErdosTchMember | 8,000,000 us-gaap_ConstructionAndDevelopmentCosts / dei_LegalEntityAxis = creg_ErdosTchMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Terms of contracts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Leasing fees |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 279,400 creg_LeaseRevenuesAndFees / creg_ContractAgreementAxis = creg_BiomassPowerGenerationProjectLeaseAgreementMember | 1,900,000 creg_LeaseRevenuesAndFees / creg_ContractAgreementAxis = creg_BiomassPowerGenerationProjectLeaseAgreementMember |  |  |  |  |  |  |  |  |  |  |  |  |  | 286,000 creg_LeaseRevenuesAndFees / creg_ProjectAxis = creg_ShenqiuProjectMember | 1,800,000 creg_LeaseRevenuesAndFees / creg_ProjectAxis = creg_ShenqiuProjectMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 239,000 creg_LeaseRevenuesAndFees / dei_LegalEntityAxis = creg_XianTchMember / us-gaap_PropertyPlantAndEquipmentByTypeAxis = creg_BiomassPowerGenerationSystemMember | 1.5 creg_LeaseRevenuesAndFees / dei_LegalEntityAxis = creg_XianTchMember / us-gaap_PropertyPlantAndEquipmentByTypeAxis = creg_BiomassPowerGenerationSystemMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15 years | 15 years |  |  |  |  |  | 20 years |  |  |  |  |  |  |  | 11 years | 11 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 24 years | 24 years |  |  |  |  |  |  |  |  |  | 9 years 6 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total cost of project |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11,100,000 creg_TotalCostOfProject / creg_ProjectAxis = creg_ShenqiuProjectMember | 68,000,000 creg_TotalCostOfProject / creg_ProjectAxis = creg_ShenqiuProjectMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Original investment by subsidiary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,850,000 creg_OriginalInvestmentBySubsidiary / creg_LimitedPartnersAxis = creg_XianZhonghongNewEnergyTechnologyCoMember | 30,000,000 creg_OriginalInvestmentBySubsidiary / creg_LimitedPartnersAxis = creg_XianZhonghongNewEnergyTechnologyCoMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 650,000,000,000 creg_OriginalInvestmentBySubsidiary / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_HongyuanHuifuMember | 4,000,000 creg_OriginalInvestmentBySubsidiary / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_HongyuanHuifuMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 830,000,000,000 creg_OriginalInvestmentBySubsidiary / dei_LegalEntityAxis = creg_HyrefFundMember | 5,000,000 creg_OriginalInvestmentBySubsidiary / dei_LegalEntityAxis = creg_HyrefFundMember |  |  |  |  |  |  | 10,000,000 creg_OriginalInvestmentBySubsidiary / dei_LegalEntityAxis = creg_HongyuanRecyclingEnergyInvestmentManagementBeijingCoLtdMember
Consideration of thermal power generation project |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,570,000 creg_ConsiderationOfThermalPowerGenerationProject / creg_ProjectAxis = creg_ShenqiuProjectMember | 22,500,000 creg_ConsiderationOfThermalPowerGenerationProject / creg_ProjectAxis = creg_ShenqiuProjectMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum service fee |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 300,000 creg_MinimumServiceFee / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_SinosteelJilinFerroalloysCoLtdJitieMember | 1,800,000 creg_MinimumServiceFee / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_SinosteelJilinFerroalloysCoLtdJitieMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 190,000 creg_MinimumServiceFee / dei_LegalEntityAxis = creg_XianTchAndShanxiDatongMember / creg_ProjectAxis = creg_FirstFiveYearsMember | 1,200,000 creg_MinimumServiceFee / dei_LegalEntityAxis = creg_XianTchAndShanxiDatongMember / creg_ProjectAxis = creg_FirstFiveYearsMember | 180,000 creg_MinimumServiceFee / dei_LegalEntityAxis = creg_XianTchAndShanxiDatongMember / creg_ProjectAxis = creg_SecondFiveYearsMember | 1,100,000 creg_MinimumServiceFee / dei_LegalEntityAxis = creg_XianTchAndShanxiDatongMember / creg_ProjectAxis = creg_SecondFiveYearsMember | 160,000 creg_MinimumServiceFee / dei_LegalEntityAxis = creg_XianTchAndShanxiDatongMember / creg_ProjectAxis = creg_MinimumTenYearsMember | 1,000,000 creg_MinimumServiceFee / dei_LegalEntityAxis = creg_XianTchAndShanxiDatongMember / creg_ProjectAxis = creg_MinimumTenYearsMember | 150,000 creg_MinimumServiceFee / dei_LegalEntityAxis = creg_XianTchAndShanxiDatongMember / creg_ProjectAxis = creg_MaximumtenYearsMember | 900,000 creg_MinimumServiceFee / dei_LegalEntityAxis = creg_XianTchAndShanxiDatongMember / creg_ProjectAxis = creg_MaximumtenYearsMember |  |  |  |  |  |  |  |  |
Installed Plant Capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 creg_InstalledPlantCapacity / creg_ContractAgreementAxis = creg_BiomassPowerGenerationAssetTransferAgreementMember | 12 creg_InstalledPlantCapacity / creg_ContractAgreementAxis = creg_BiomassPowerGenerationAssetTransferAgreementMember | 12 creg_InstalledPlantCapacity / creg_ContractAgreementAxis = creg_BiomassPowerGenerationProjectLeaseAgreementMember | 12 creg_InstalledPlantCapacity / creg_ContractAgreementAxis = creg_BiomassPowerGenerationProjectLeaseAgreementMember |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 creg_InstalledPlantCapacity / creg_ProjectAxis = creg_ShenqiuProjectMember | 12 creg_InstalledPlantCapacity / creg_ProjectAxis = creg_ShenqiuProjectMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 18 creg_InstalledPlantCapacity / dei_LegalEntityAxis = creg_ErdosTchMember / creg_ProjectAxis = creg_PhaseOneMember | 27 creg_InstalledPlantCapacity / dei_LegalEntityAxis = creg_ErdosTchMember / creg_ProjectAxis = creg_PhaseTwoMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.5 creg_InstalledPlantCapacity / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_SinosteelJilinFerroalloysCoLtdJitieMember | 10.5 creg_InstalledPlantCapacity / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_SinosteelJilinFerroalloysCoLtdJitieMember |  |  |  |  |  |  |  |  |  |  | 3 creg_InstalledPlantCapacity / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_SinosteelJilinFerroalloysCoLtdJitieMember / us-gaap_RangeAxis = us-gaap_MinimumMember | 7.5 creg_InstalledPlantCapacity / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_SinosteelJilinFerroalloysCoLtdJitieMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  | 7 creg_InstalledPlantCapacity / dei_LegalEntityAxis = creg_ZhongbaoMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subscribed amount of initial capital contribution |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 75,000,000 creg_SubscribedAmountOfInitialCapitalContribution / dei_LegalEntityAxis = creg_HyrefFundMember | 460,000,000 creg_SubscribedAmountOfInitialCapitalContribution / dei_LegalEntityAxis = creg_HyrefFundMember | 46,670,000 creg_SubscribedAmountOfInitialCapitalContribution / dei_LegalEntityAxis = creg_HyrefFundMember / creg_LimitedPartnersAxis = creg_ChinaOrientAssetManagementCoLtdMember | 280,000,000 creg_SubscribedAmountOfInitialCapitalContribution / dei_LegalEntityAxis = creg_HyrefFundMember / creg_LimitedPartnersAxis = creg_ChinaOrientAssetManagementCoLtdMember | 12,500,000 creg_SubscribedAmountOfInitialCapitalContribution / dei_LegalEntityAxis = creg_HyrefFundMember / creg_LimitedPartnersAxis = creg_XianTchLimitedPartnersMember | 75,000,000 creg_SubscribedAmountOfInitialCapitalContribution / dei_LegalEntityAxis = creg_HyrefFundMember / creg_LimitedPartnersAxis = creg_XianTchLimitedPartnersMember | 16,670,000 creg_SubscribedAmountOfInitialCapitalContribution / dei_LegalEntityAxis = creg_HyrefFundMember / creg_ProjectAxis = creg_HongyuanHuifuMember | 100,000,000 creg_SubscribedAmountOfInitialCapitalContribution / dei_LegalEntityAxis = creg_HyrefFundMember / creg_ProjectAxis = creg_HongyuanHuifuMember |
Total Fund Capital Contribution |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 76,660,000 creg_TotalFundCapitalContribution / dei_LegalEntityAxis = creg_HyrefFundMember | 460,000,000 creg_TotalFundCapitalContribution / dei_LegalEntityAxis = creg_HyrefFundMember |  |  |  |  |  |  |
Partnership Term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Limited Partnership Term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 years | 3 years |  |  |  |  |  |  |
Energy Saving Solution And Services Cost |  |  |  |  |  |  |  |  |  |  |  | 179,000 creg_EnergySavingSolutionAndServicesCost / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = creg_TrtSystemMember | 1,100,000 creg_EnergySavingSolutionAndServicesCost / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = creg_TrtSystemMember | 243,902 creg_EnergySavingSolutionAndServicesCost / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = creg_ZhonggangMember | 1,500,000 creg_EnergySavingSolutionAndServicesCost / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = creg_ZhonggangMember |  |  |  |  | 243,902,000,000 creg_EnergySavingSolutionAndServicesCost / creg_LimitedPartnersAxis = creg_XianZhonghongNewEnergyTechnologyCoMember | 1,500,000 creg_EnergySavingSolutionAndServicesCost / creg_LimitedPartnersAxis = creg_XianZhonghongNewEnergyTechnologyCoMember | 4,370,000 creg_EnergySavingSolutionAndServicesCost / creg_LimitedPartnersAxis = creg_XianZhonghongNewEnergyTechnologyCoMember | 27,000,000 creg_EnergySavingSolutionAndServicesCost / creg_LimitedPartnersAxis = creg_XianZhonghongNewEnergyTechnologyCoMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Contract Price For Materials Equipment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 66,680,000 creg_TotalContractPriceForMaterialsEquipment / creg_LimitedPartnersAxis = creg_BoxingCountyChengliGasSupplyCoLtdMember | 400,000,000 creg_TotalContractPriceForMaterialsEquipment / creg_LimitedPartnersAxis = creg_BoxingCountyChengliGasSupplyCoLtdMember | 33,340,000 creg_TotalContractPriceForMaterialsEquipment / creg_ContractAgreementAxis = creg_EpcGeneralContractorAgreementMember / creg_LimitedPartnersAxis = creg_BoxingCountyChengliGasSupplyCoLtdMember | 200,000,000 creg_TotalContractPriceForMaterialsEquipment / creg_ContractAgreementAxis = creg_EpcGeneralContractorAgreementMember / creg_LimitedPartnersAxis = creg_BoxingCountyChengliGasSupplyCoLtdMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase price for Power Generation Systems |  |  | 18,690,000 creg_PayableForPowerGenerationSystems | 115,000,000 creg_PayableForPowerGenerationSystems |  |  |  |  |  |  |  |  |  |  |  | 16,480,000 creg_PayableForPowerGenerationSystems / creg_ContractAgreementAxis = creg_BiomassPowerGenerationAssetTransferAgreementMember | 100,000,000 creg_PayableForPowerGenerationSystems / creg_ContractAgreementAxis = creg_BiomassPowerGenerationAssetTransferAgreementMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9,760,000 creg_PayableForPowerGenerationSystems / dei_LegalEntityAxis = creg_XianTchMember / creg_LimitedPartnersAxis = creg_WasteHeatPowerGenerationProjectsMember | 60,000,000 creg_PayableForPowerGenerationSystems / dei_LegalEntityAxis = creg_XianTchMember / creg_LimitedPartnersAxis = creg_WasteHeatPowerGenerationProjectsMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock Issuable For Power Generation Systems |  |  | 8,233,779 creg_CommonStockIssuableForPowerGenerationSystems | 8,233,779 creg_CommonStockIssuableForPowerGenerationSystems |  |  |  |  |  |  |  |  |  |  |  | 8,766,547 creg_CommonStockIssuableForPowerGenerationSystems / creg_ContractAgreementAxis = creg_BiomassPowerGenerationAssetTransferAgreementMember | 8,766,547 creg_CommonStockIssuableForPowerGenerationSystems / creg_ContractAgreementAxis = creg_BiomassPowerGenerationAssetTransferAgreementMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8,233,779 creg_CommonStockIssuableForPowerGenerationSystems / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_QitaiheCityBoliYidaCoalSelectionCoLtdYidaMember | 8,233,779 creg_CommonStockIssuableForPowerGenerationSystems / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_QitaiheCityBoliYidaCoalSelectionCoLtdYidaMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock Issuable Per Share For Power Generation Systems |  |  | $ 2.27 creg_CommonStockIssuablePerShareForPowerGenerationSystems |  |  |  |  |  |  |  |  |  |  |  |  | $ 1.87 creg_CommonStockIssuablePerShareForPowerGenerationSystems / creg_ContractAgreementAxis = creg_BiomassPowerGenerationAssetTransferAgreementMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease Amount Per Month |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 630,000 creg_LeaseAmountPerMonth / creg_ContractAgreementAxis = creg_BiomassPowerGenerationAssetTransferAgreementMember | 3,800,000 creg_LeaseAmountPerMonth / creg_ContractAgreementAxis = creg_BiomassPowerGenerationAssetTransferAgreementMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated profit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 226,000 creg_AccumulatedProfit / dei_LegalEntityAxis = creg_ErdosTchMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration of power generation project |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,937,500 creg_ConsiderationOfPowerGenerationProject / creg_ProjectAxis = creg_ShenqiuProjectMember | 70 creg_ConsiderationOfPowerGenerationProject / creg_ProjectAxis = creg_ShenqiuProjectMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of accumulated profit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.00%creg_PercentageOfAccumulatedProfit / dei_LegalEntityAxis = creg_XianTchMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capacity per year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 80,000 creg_CapacityPerYear / dei_LegalEntityAxis = creg_ZhongbaoMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minority interest decrease from redemptions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.29 us-gaap_MinorityInterestDecreaseFromRedemptions / dei_LegalEntityAxis = creg_XianTchMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ordinary limited partnership term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 years | 4 years |  |  |  |  |  |  |
Partnership expiration |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Jul. 18, 2019 | Jul. 18, 2019 |  |  |  |  |  |  |
Fixed monthly fee for waste water treatment system |  |  |  |  |  |  |  | 171,010 creg_FixedMonthlyFeeForWasteWaterTreatmentSystem / creg_PaymentPeriodAxis = creg_PaymentPeriodOneMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = creg_BaoliyuanMember | 1,050,000 creg_FixedMonthlyFeeForWasteWaterTreatmentSystem / creg_PaymentPeriodAxis = creg_PaymentPeriodOneMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = creg_BaoliyuanMember | 153,094 creg_FixedMonthlyFeeForWasteWaterTreatmentSystem / creg_PaymentPeriodAxis = creg_PaymentPeriodTwoMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = creg_BaoliyuanMember | 940,000 creg_FixedMonthlyFeeForWasteWaterTreatmentSystem / creg_PaymentPeriodAxis = creg_PaymentPeriodTwoMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = creg_BaoliyuanMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Description on termination of agreement |  |  |  |  |  | 1) if it is less than five (5) years (including five (5) years) into the term when Rongfeng requests termination, Rongfeng shall pay: Xian TCHs total investment amount plus Xian TCHs average annual investment return times (five (5) years minus the years of which the system has already operated); 2) if it is more than five (5) years into the term when Rongfeng requests the termination, Rongfeng shall pay: Xian TCHs total investment amount minus total amortization cost (the amortization period is ten (10) years). |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Security Deposit | 338,079 us-gaap_SecurityDeposit | 2,130,000 us-gaap_SecurityDeposit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 490,000 us-gaap_SecurityDeposit / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_QitaiheCityBoliYidaCoalSelectionCoLtdYidaMember | 3,000,000 us-gaap_SecurityDeposit / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_QitaiheCityBoliYidaCoalSelectionCoLtdYidaMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares Issued, Price Per Share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2.27 us-gaap_SharesIssuedPricePerShare / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_QitaiheCityBoliYidaCoalSelectionCoLtdYidaMember |  | $ 1.76 us-gaap_SharesIssuedPricePerShare / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_QitaiheCityBoliYidaCoalSelectionCoLtdYidaMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock Value Issuable For Power Generation Systems |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 14,490,000 creg_CommonStockValueIssuableForPowerGenerationSystems / dei_LegalEntityAxis = creg_XianTchMember / creg_ProjectAxis = creg_QitaiheCityBoliYidaCoalSelectionCoLtdYidaMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease Repurchase Price |  |  |  |  |  |  |  |  |  |  |  | 5,690,000 creg_LeaseRepurchasePrice / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = creg_TrtSystemMember | 35,000,000 creg_LeaseRepurchasePrice / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = creg_TrtSystemMember | 9,760,000 creg_LeaseRepurchasePrice / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = creg_ZhonggangMember | 60,000,000 creg_LeaseRepurchasePrice / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = creg_ZhonggangMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale Leaseback Transaction, Description |  |  |  |  |  |  | 1) if it is less than five (5) years (including five (5) years) into the term when Baoliyuan requests termination, Baoliyuan shall pay: Xian TCHs total investment amount plus Xian TCHs average annual investment return times (five (5) years minus the years of which the system has already operated); 2) if it is more than five (5) years into the term when Baoliyuan requests the termination, Baoliyuan shall pay: Xian TCHs total investment amount minus total amortization cost (the amortization period is twenty (20) years). |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (i)BMPG systems to Pucheng Phase I and II (15 and 11 year terms, respectively); (ii)BMPG systems to Shenqiu Phase I (11 year term); (iii)Shenqiu Phase II (9.5 year term); (iv)WHPG systems to Jitie (24 year term); (v) WGPG systems to Yida (15 year term); and (vi)two BPRT systems to Shanxi Datong (30 year term). |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued Investment Income Receivable |  |  |  |  | 4,780,000 us-gaap_AccruedInvestmentIncomeReceivable / us-gaap_SaleLeasebackTransactionDescriptionAxis = creg_AssetsRepurchaseAgreementMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8,040,000 us-gaap_AccruedInvestmentIncomeReceivable / creg_LimitedPartnersAxis = creg_WasteHeatPowerGenerationProjectsMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on Investments |  |  |  |  | $ 980,000 us-gaap_GainLossOnInvestments / us-gaap_SaleLeasebackTransactionDescriptionAxis = creg_AssetsRepurchaseAgreementMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,760,000 us-gaap_GainLossOnInvestments / creg_LimitedPartnersAxis = creg_WasteHeatPowerGenerationProjectsMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term Contract for Purchase of Electric Power, Description |  |  |  |  |  |  | The construction period of the CDQ Project is expected to be fifteen (15) months from the effective date of the Agreement. Baoliyuan will start to pay an energy saving fee from the date when the WHPG station passes the required 72 hour test run. The term of payment is for twenty (20) years and Baoliyuan shall pay an energy saving fee at RMB 0.7 ($0.114) per kilowatt hour (including tax) for the power generated from the system, from which Xian TCH shall take 92.86% and Baoliyuan shall take 7.14% as parties to share the energy saving benefits. During the term of the contract the energy saving fee shall be adjusted at the same percentage as the change of local grid electricity price. Baoliyuan shall provide guarantees to ensure it will fulfill its obligations under the Agreement. Upon the completion of the term, Xian TCH will transfer the systems to Baoliyuan at RMB 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | The term of the Agreements is for twenty (20) years. The first 800 million watt hours generated by the Chengli Project will be charged at RMB 0.42 ($0.068) per kilowatt hour (excluding tax); thereafter, the energy saving fee will be RMB 0.20 ($0.036) per kilowatt hour (excluding tax). The operating time shall be based upon an average 8,000 hours annually. If the operating time is less than 8,000 hours per year due to a reason attributable to Chengli, then time charged shall be 8,000 hours a year, and if it is less than 8,000 hours due to a reason attributable to Zhonghong, then it shall be charged at actual operating hours. The construction of the Chengli Project is anticipated to be completed in the second quarter of 2015. When operations begin, Chengli shall ensure its coking production line works properly and that working hours for the CDQ system are at least 8,000 hours per year, and Zhonghong shall ensure that working hours and the CDQ WHPG system will be at least 7,200 hours per year. | Upon completion of the Tianyu Project, Zhonghong will charge Tianyu an energy saving service fee of RMB 0.534 ($0.087) per kilowatt hour (excluding tax). The operating time will be based upon an average 8,000 hours annually for each of Xuzhou Tian'an and Xuzhou Huayu. If the operating time is less than 8,000 hours per year due to a reason attributable to Tianyu, then time charged will be 8,000 hours a year. The term of the Tianyu Agreement is twenty (20) years. The construction of the Tianyu Project is anticipated to be completed between the end of 2015 and the middle of 2016. Tianyu will provide the land for the CDQ systems and CDQ WHPG systems for free. Tianyu also guarantees that it will purchase all of the power generated by the CDQ WHPG systems | The construction period of the Project is expected to be eighteen (18) months from the date when conditions are ready for construction to begin. Zhongtai will start to pay an energy saving service fee from the date when the WHPG station passes the required 72 hour test run. The term of payment is for twenty (20) years. For the first ten (10) years of the term, Zhongtai shall pay an energy saving service fee at RMB 0.534 ($0.089) per kilowatt hour (including value added tax) for the power generated from the system. For the second ten (10) years of the term, Zhongtai shall pay an energy saving service fee at RMB 0.402 ($0.067) per kilowatt hour (including value added tax). During the term of the contract the energy saving service fee shall be adjusted at the same percentage as the change of local grid electricity price. Zhongtai shall also pay an energy saving service fee for the steam supplied by Xian TCH at RMB 100 ($16.67) per ton (including value added tax). Zhongtai and its parent company will provide guarantees to ensure Zhongtai will fulfill its obligations under the Agreement. Upon the completion of the term, Xian TCH will transfer the systems to Zhongtai at RMB 1 ($0.16). Zhongtai shall provide waste heat to the systems for no less than 8,000 hours per year and waste gas volume no less than 150,000 Nm3 per hour with a temperature no less than 950C. If these requirements are not met, the term of the Agreement will be extended accordingly. If Zhongtai wants to terminate the Zhongtai Agreement early, it shall provide Xian TCH a 60 day notice and pay the termination fee and compensation for the damages to Xian TCH according to the following formula: 1) if it is less than five (5) years into the term when Zhongtai requests termination, Zhongtai shall pay: Xian TCHs total investment amount plus Xian TCHs annual investment return times five (5) years minus the years in which the system has already operated); or 2) if it is more than five (5) years into the term when Zhongtai requests the termination, Zhongtai shall pay: Xian TCHs total investment amount minus total amortization cost (the amortization period is ten (10) years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569655-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4616395-111683 + Details
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- Definition A description of the significant provisions of the transaction involving the sale of property to another party and the lease of the property back to the seller. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6452660&loc=d3e36991-112694 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6456341&loc=d3e50796-112755 + Details
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- Definition The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8,17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount per share or per unit of equity securities issued by non-development stage entity. + References No definition available. + Details
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