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v3.23.1

Statutory Reserves (Details) | 12 Months Ended
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Dec. 31, 2022
Statutory Reserves (Details) [Line Items] |
Percentage of registered capital | 25.00%
Surplus Reserve Fund [Member] |
Statutory Reserves (Details) [Line Items] |
Percentage of net income | 10.00%
Statutory surplus reserve of registered capital, percentage | 50.00%
Common Welfare Fund [Member] | Minimum [Member] |
Statutory Reserves (Details) [Line Items] |
Percentage of net income | 5.00%
Common Welfare Fund [Member] | Maximum [Member] |
Statutory Reserves (Details) [Line Items] |
Percentage of net income | 10.00%

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- Definition The percentage of registered capital. + References No definition available. + Details
Name: | creg_PercentageOfRegisteredCapital
Namespace Prefix: | creg_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | creg_PercentageOfReserveRegisteredCapital
Namespace Prefix: | creg_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage of statutory reserve net income for the period. + References No definition available. + Details
Name: | creg_PercentageOfStatutoryReserveNetIncome
Namespace Prefix: | creg_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | creg_StatutoryReservesDetailsLineItems
Namespace Prefix: | creg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=creg_StatutorySurplusReserveFundMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=creg_CommonWelfareFundMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |