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LONG TERM INVESTMENT (Narrative) (Details)
 1 Months Ended 12 Months Ended 1 Months Ended 1 Months Ended 12 Months Ended
Jun. 25, 2013
Xi'an TCH Limited Partner [Member]
USD ($)
Jun. 25, 2013
Xi'an TCH Limited Partner [Member]
CNY
Dec. 31, 2014
Xi'an TCH Limited Partner [Member]
USD ($)
Dec. 31, 2013
Xi'an TCH Limited Partner [Member]
USD ($)
Jul. 18, 2013
Xi'an TCH Limited Partner [Member]
Jun. 25, 2013
Xi'an TCH Limited Partner [Member]
Ownership Interest [Member]
Jul. 18, 2013
Xi'an TCH Limited Partner [Member]
HYREF Fund [Member]
USD ($)
Jul. 18, 2013
Xi'an TCH Limited Partner [Member]
HYREF Fund [Member]
CNY
Jul. 18, 2013
China Orient Asset Management Co., Ltd [Member]
HYREF Fund [Member]
USD ($)
Jul. 18, 2013
China Orient Asset Management Co., Ltd [Member]
HYREF Fund [Member]
CNY
Jun. 25, 2013
Hongyuan Recycling Energy Investment Management Co.Ltd [Member]
USD ($)
Jun. 25, 2013
Hongyuan Recycling Energy Investment Management Co.Ltd [Member]
CNY
Jun. 25, 2013
Hongyuan Huifu [Member]
Jul. 18, 2013
Hongyuan Huifu [Member]
USD ($)
Jul. 18, 2013
Hongyuan Huifu [Member]
CNY
Jul. 18, 2013
Hongyuan Huifu [Member]
HYREF Fund [Member]
USD ($)
Jul. 18, 2013
Hongyuan Huifu [Member]
HYREF Fund [Member]
CNY
Dec. 31, 2014
Zhonghong [Member]
Jul. 18, 2013
Zhonghong [Member]
USD ($)
Jul. 18, 2013
Zhonghong [Member]
CNY
Dec. 31, 2014
Zhonghong [Member]
Revenue
Long Term Investment [Line Items]                                          
Registered Capital                     $ 1,600,000creg_RegisteredCapital
/ dei_LegalEntityAxis
= creg_HongyuanRecyclingEnergyInvestmentManagementColtdMember		 10,000,000creg_RegisteredCapital
/ dei_LegalEntityAxis
= creg_HongyuanRecyclingEnergyInvestmentManagementColtdMember		                  
Original Investment By Subsidiary 650,000creg_OriginalInvestmentBySubsidiary
/ creg_LimitedPartnersAxis
= creg_XianTchLimitedPartnerMember		 4,000,000creg_OriginalInvestmentBySubsidiary
/ creg_LimitedPartnersAxis
= creg_XianTchLimitedPartnerMember		                           46,670,000creg_OriginalInvestmentBySubsidiary
/ creg_InvestmentFundAxis
= creg_HyrefFundMember
/ dei_LegalEntityAxis
= creg_HongyuanHuifuMember		 280,000,000creg_OriginalInvestmentBySubsidiary
/ creg_InvestmentFundAxis
= creg_HyrefFundMember
/ dei_LegalEntityAxis
= creg_HongyuanHuifuMember		        
Profit distribution percentage 20.00%creg_PercentageShareOfGainLossFromJointVenture
/ creg_LimitedPartnersAxis
= creg_XianTchLimitedPartnerMember		 20.00%creg_PercentageShareOfGainLossFromJointVenture
/ creg_LimitedPartnersAxis
= creg_XianTchLimitedPartnerMember		       40.00%creg_PercentageShareOfGainLossFromJointVenture
/ creg_LimitedPartnersAxis
= creg_XianTchLimitedPartnerMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_OtherOwnershipInterestMember		             80.00%creg_PercentageShareOfGainLossFromJointVenture
/ dei_LegalEntityAxis
= creg_HongyuanHuifuMember		                
One Time Commission To Fund Management       1,600,000creg_OneTimeCommissionToFundManagement
/ creg_LimitedPartnersAxis
= creg_XianTchLimitedPartnerMember		                                  
Investment cost                           830,000us-gaap_InvestmentOwnedAtCost
/ dei_LegalEntityAxis
= creg_HongyuanHuifuMember		 5,000,000us-gaap_InvestmentOwnedAtCost
/ dei_LegalEntityAxis
= creg_HongyuanHuifuMember		            
Subscribed Amount Of Initial Capital Contribution             16,670,000creg_SubscribedAmountOfInitialCapitalContribution
/ creg_InvestmentFundAxis
= creg_HyrefFundMember
/ creg_LimitedPartnersAxis
= creg_XianTchLimitedPartnerMember		 100,000,000creg_SubscribedAmountOfInitialCapitalContribution
/ creg_InvestmentFundAxis
= creg_HyrefFundMember
/ creg_LimitedPartnersAxis
= creg_XianTchLimitedPartnerMember		 12,500,000creg_SubscribedAmountOfInitialCapitalContribution
/ creg_InvestmentFundAxis
= creg_HyrefFundMember
/ creg_LimitedPartnersAxis
= creg_ChinaOrientAssetManagementCoLtdMember		 75,000,000creg_SubscribedAmountOfInitialCapitalContribution
/ creg_InvestmentFundAxis
= creg_HyrefFundMember
/ creg_LimitedPartnersAxis
= creg_ChinaOrientAssetManagementCoLtdMember		                      
Percentage Of Owned Fund         16.30%creg_PercentagedOfOwnedFund
/ creg_LimitedPartnersAxis
= creg_XianTchLimitedPartnerMember		                                
Cost Method Investments             12,200,000us-gaap_CostMethodInvestments
/ creg_InvestmentFundAxis
= creg_HyrefFundMember
/ creg_LimitedPartnersAxis
= creg_XianTchLimitedPartnerMember		 75,000,000us-gaap_CostMethodInvestments
/ creg_InvestmentFundAxis
= creg_HyrefFundMember
/ creg_LimitedPartnersAxis
= creg_XianTchLimitedPartnerMember		                          
Total Fund Capital Contribution                                     75,000,000creg_TotalFundCapitalContribution
/ dei_LegalEntityAxis
= creg_ZhonghongMember		 460,000,000creg_TotalFundCapitalContribution
/ dei_LegalEntityAxis
= creg_ZhonghongMember		  
Equity based invstment income     $ 167,446us-gaap_IncomeLossFromEquityMethodInvestments
/ creg_LimitedPartnersAxis
= creg_XianTchLimitedPartnerMember		                                    
Equity interest percentage     91.70%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ creg_LimitedPartnersAxis
= creg_XianTchLimitedPartnerMember		                             90.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ dei_LegalEntityAxis
= creg_ZhonghongMember		      
Management Company Revenue                                         100.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ dei_LegalEntityAxis
= creg_ZhonghongMember