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CONSTRUCTION IN PROGRESS (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Shanxi Datong Coal Group [Member]
Construction Contracts [Line Items]
Additional Construction In Progress Gross	$ 2.45creg_AdditionalConstructionInProgressGross / dei_LegalEntityAxis = creg_ShannxiDatongCoalGroupMember
Xuzhou Huayu project [Member]
Construction Contracts [Line Items]
Additional Construction In Progress Gross	8.17creg_AdditionalConstructionInProgressGross / dei_LegalEntityAxis = creg_XuzhouHuayuProjectMember
Xuzhou Tian'an project [Member]
Construction Contracts [Line Items]
Additional Construction In Progress Gross	9.81creg_AdditionalConstructionInProgressGross / dei_LegalEntityAxis = creg_XuzhouTiananProjectMember
Xuzhou Zhongtai project [Member]
Construction Contracts [Line Items]
Additional Construction In Progress Gross	8.28creg_AdditionalConstructionInProgressGross / dei_LegalEntityAxis = creg_XuzhouZhongtaiProjectMember
Tangshan Rongfeng project [Member]
Construction Contracts [Line Items]
Additional Construction In Progress Gross	2.42creg_AdditionalConstructionInProgressGross / dei_LegalEntityAxis = creg_TangshanRongfengProjectMember
Chengli Boxing Project [Member]
Construction Contracts [Line Items]
Additional Construction In Progress Gross	$ 9.81creg_AdditionalConstructionInProgressGross / dei_LegalEntityAxis = creg_ChengliBoxingProjectMember

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