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LOANS PAYABLE (Future Minimum Repayments of all Bank Loans and Entrusted Loan) (Details) (Bank Loans and Entrusted Loan [Member], USD $)
Dec. 31, 2014
Bank Loans and Entrusted Loan [Member]
 
Debt Instrument [Line Items]  
2015 $ 15,729,694us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
/ us-gaap_DebtInstrumentAxis
= creg_BankAndEntrustedLoansMember
2016 65,388,135us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
/ us-gaap_DebtInstrumentAxis
= creg_BankAndEntrustedLoansMember
2017 41,282,889us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
/ us-gaap_DebtInstrumentAxis
= creg_BankAndEntrustedLoansMember
2018 18,872,365us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
/ us-gaap_DebtInstrumentAxis
= creg_BankAndEntrustedLoansMember
2019 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
/ us-gaap_DebtInstrumentAxis
= creg_BankAndEntrustedLoansMember
Total $ 141,273,083us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= creg_BankAndEntrustedLoansMember