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Entrusted Loan Payable (Details) $ in Thousands |  |  |  |  |  |  |  |  |  | 9 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |  |  |
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Jun. 28, 2021 USD ($) | Jun. 28, 2021 CNY (¥) | Apr. 09, 2021 USD ($) | Apr. 09, 2021 CNY (¥) | Dec. 31, 2020 USD ($) | Dec. 31, 2020 CNY (¥) | Sep. 30, 2020 USD ($) | Sep. 30, 2020 CNY (¥) | Jun. 30, 2020 USD ($) | Jun. 30, 2020 CNY (¥) | Apr. 05, 2020 USD ($) | Apr. 05, 2020 CNY (¥) | Feb. 05, 2020 USD ($) | Feb. 05, 2020 CNY (¥) | Jan. 05, 2020 USD ($) | Jan. 05, 2020 CNY (¥) | Dec. 29, 2018 USD ($) | Dec. 29, 2018 CNY (¥) | Sep. 30, 2025 USD ($) shares | Sep. 30, 2025 CNY (¥) shares | Dec. 31, 2022 USD ($) | Dec. 31, 2022 CNY (¥) | Dec. 31, 2021 USD ($) | Sep. 30, 2025 CNY (¥) shares | Nov. 30, 2024 CNY (¥) | Jul. 08, 2023 USD ($) | Jul. 08, 2023 CNY (¥) | Dec. 31, 2021 CNY (¥) | Jun. 28, 2021 CNY (¥) | Dec. 20, 2019 USD ($) | Dec. 20, 2019 CNY (¥) | Jan. 04, 2019 USD ($) | Jan. 04, 2019 CNY (¥) | Dec. 31, 2017 USD ($) | Dec. 31, 2017 CNY (¥) | Aug. 05, 2016 USD ($) | Aug. 05, 2016 CNY (¥) | Jul. 31, 2013 USD ($) | Jul. 31, 2013 CNY (¥)
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan long term interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12.50% | 12.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan, outstanding | $ 11,060 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 77,000,000 |  |  |  |  |  |  |  |  |  |
Total buy back price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 37,520 | ¥ 261,727,506 |  |  |  |  |  |  |  |
Gain amount | $ |  |  | $ 3,100 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted loan and accrued interest paid |  |  | $ 27,540 | ¥ 188,639,400 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan payable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 77,000,000 | $ 11,060 | ¥ 77,000,000 |  |  | 37,520 | 261,727,506 |  |  |  |  |  |  |  |
Accrued interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,100 | 14,661,506 |  |  |  |  |  |  |  |
Installment payment for loan |  |  |  |  | $ 36,280 | ¥ 247,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayable amount | $ | 11,060 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other fees |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 11,530 | ¥ 80,288,184 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 60 years | 60 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable (HYREF Loan) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan repayment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 7,540 | ¥ 50,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term loan, remaining amount value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 45,540 | ¥ 280,000,000 |  |
Loan, outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 34,680 | ¥ 230,000,000 |  |
Interest rate of loan payable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9.00% | 9.00% |  |  |  |
First Payment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Installment payment for loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 7,170 | ¥ 50,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2nd Payment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Installment payment for loan |  |  |  |  |  |  |  |  |  |  |  |  | $ 7,170 | ¥ 50,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
1st Payment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Installment payment for loan |  |  |  |  |  |  |  |  |  |  | $ 7,170 | ¥ 50,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
4th Payment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Installment payment for loan |  |  |  |  |  |  |  |  | $ 7,170 | ¥ 50,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Final Payment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Installment payment for loan |  |  |  |  |  |  | $ 6,750 | ¥ 47,066,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lender Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued interest | $ 350 | ¥ 2,418,229 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans Payable [Member] | Entrusted Loan Payable (HYREF Loan) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term loan, remaining amount value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 42,220 |  |  |  |  | ¥ 280,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable HYREF Loan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 77,000 | ¥ 460,000,000
HYREF [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 500 | 3,000,000
Zhonghong [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 74,500 | 457,000,000
Xi’an TCH [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 11,630 |  |  |  |  | ¥ 75,000,000 |  |  |  |  |  |  |  |  |  |  |
Capital contribution |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,390 | ¥ 27,000,000
Accrued interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,100 | ¥ 14,661,506 |  |  |  |  |  |  |  |
Impairment loss | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 11,630 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Transfer price for Xuzhou Huayu Project [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan payable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 17,520 | ¥ 120,000,000 |  |  |  |  |  |
Transfer price for Shenqiu Phase I and II Projects [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 18,550 | 127,066,000 |  |  |  |  |  |
Huaxin [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Supposed owned shares (in Shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 47,150,000 |  |  |  |  | 47,150,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares Owned (in Shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 29,948,000 | 29,948,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining shares not obtained (in Shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 17,202,000 | 17,202,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Transfer Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan payable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 36,070 | ¥ 247,066,000 |  |  |  |  |  |
Transfer Agreement [Member] | HYREF [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan repayment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 27,540 | ¥ 188,639,400 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extension of Loan Period One [Member] | Entrusted Loan Payable (HYREF Loan) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan, outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 34,680 | ¥ 230,000,000 |  |  |  |
Extension of Loan Period Two [Member] | Entrusted Loan Payable (HYREF Loan) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan, outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 16,270 | 100,000,000 |  |  |  |
Extension of Loan Period Three [Member] | Entrusted Loan Payable (HYREF Loan) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Entrusted Loan Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan, outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 12,080 | ¥ 77,000,000 |  |  |  |

X
- Definition Total buy back price. + References No definition available. + Details
Name: | creg_BuyBackPrice
Namespace Prefix: | creg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Interest on term loan payable. + References No definition available. + Details
Name: | creg_InterestOnTermLoanPayable
Namespace Prefix: | creg_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of realized gain (loss) on investment in debt and equity securities. Excludes other-than-temporary impairment (OTTI). + References No definition available. + Details
Name: | us-gaap_DebtAndEquitySecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairment
Namespace Prefix: | us-gaap_
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