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Organization and Description of Business (Details)
 1 Months Ended 3 Months Ended 12 Months Ended
Jan. 10, 2020
Mar. 31, 2016
Feb. 11, 2015
Apr. 14, 2009
Dec. 22, 2020
Dec. 29, 2018
Mar. 24, 2014
Jul. 31, 2013
USD ($)
Jul. 19, 2013
USD ($)
Jun. 15, 2013
USD ($)
Jun. 15, 2013
CNY (¥)
Mar. 30, 2013
USD ($)
Mar. 30, 2013
CNY (¥)
Sep. 28, 2011
USD ($)
Sep. 28, 2011
CNY (¥)
Mar. 31, 2021
shares
Dec. 31, 2019
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Jan. 04, 2019
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Jan. 04, 2019
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Jul. 19, 2013
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Organization and Description of Business (Details) [Line Items]                                        
Description of register captial     the Company incorporated a subsidiary, Shanghai Yinghua Financial Leasing Co., Ltd. (“Yinghua”) with registered capital of $30,000,000, to be paid within 10 years from the date the business license is issued. Yinghua is 100% owned by the Company and will be mainly engaged in financial leasing, purchase of financial leasing assets, disposal and repair of financial leasing assets, consulting and ensuring of financial leasing transactions, and related factoring business.       Xi’an TCH incorporated a subsidiary, Zhongxun Energy Investment (Beijing) Co., Ltd. (“Zhongxun”) with registered capital of $5,695,502 (RMB 35,000,000), which must be contributed before October 1, 2028. Zhongxun is 100% owned by Xi’an TCH and will be mainly engaged in project investment, investment management, economic information consulting, and technical services. Zhongxun has not yet commenced operations nor has any capital contribution been made as of the date of this report.                          
Amount of ownership interest               $ 1,290,000                        
Lease period                           11 years 11 years          
Description of business agreement                               The Company recorded $397,033 loss from this transfer during the year ended December 31, 2019. On January 10, 2019, Mr. Chonggong Bai transferred all the equity shares of his wholly owned company, Xi’an Hanneng, to HYREF as repayment for the loan. Xi’an Hanneng was expected to own 47,150,000 shares of Xi’an Huaxin New Energy Co., Ltd for the repayment of Huayu system and Shenqiu system. As of September 30, 2019, Xi’an Hanneng already owned 29,948,000 shares of Huaxin, but was not able to obtain the remaining 17,202,000 shares due to halted trading of Huaxin stock by NEEQ for not filing its 2018 annual report. On December 20, 2019, Mr. Bai and all the related parties agreed to have Mr. Bai instead making a payment in cash for the transfer price of Huayu (see Note 8 for detail).        
Cooperative agreement, description                 Upon completion of the Tianyu Project, Zhonghong will charge Tianyu an energy saving fee of RMB 0.534 ($0.087) per kilowatt hour (excluding tax). The term of the Tianyu Agreement is 20 years. The construction of the Xuzhou Tian’an Project is anticipated to be completed by the second quarter of 2020.                      
Registered capital                                   $ 17,520,000 ¥ 120,000,000  
Description of waste heat power generation energy management cooperative agreement   As consideration for the transfer of the Project, Zhongtai agreed to pay to Xi’an TCH RMB 167,360,000 ($25.77 million) including (i) RMB 152,360,000 ($23.46 million) for the construction of the Project; and (ii) RMB 15,000,000 ($2.31 million) as payment for partial loan interest accrued during the construction period. Those amounts have been, or will be, paid by Zhongtai to Xi’an TCH according to the following schedule: (a) RMB 50,000,000 ($7.70 million) was to be paid within 20 business days after the Transfer Agreement was signed; (b) RMB 30,000,000 ($4.32 million) was to be paid within 20 business days after the Project was completed, but no later than July 30, 2016; and (c) RMB 87,360,000 ($13.45 million) was to be paid no later than July 30, 2017. Xuzhou Taifa Special Steel Technology Co., Ltd. (“Xuzhou Taifa”) guaranteed the payments from Zhongtai to Xi’an TCH. The ownership of the Project was conditionally transferred to Zhongtai following the initial payment of RMB 50,000,000 ($7.70 million) by Zhongtai to Xi’an TCH and the full ownership of the Project will be officially transferred to Zhongtai after it completes all payments pursuant to the Transfer Agreement. The Company recorded a $2.82 million loss from this transaction in 2016. In 2016, Xi’an TCH had received the first payment of $7.70 million and the second payment of $4.32 million. However, the Company received a repayment commitment letter from Zhongtai on February 23, 2018, in which Zhongtai committed to pay the remaining payment of RMB 87,360,000 ($13.45 million) no later than the end of July 2018; in July 2018, Zhongtai and the Company reached a further oral agreement to extend the repayment term of RMB 87,360,000 ($13.45 million) by another two to three months. In January 2020, Zhongtai paid RMB 10 million ($1.41 million); in March 2020, Zhongtai paid RMB 20 million ($2.82 million); in June 2020, Zhongtai paid RMB 10 million ($1.41 million); and in December 2020, Zhongtai paid RMB 30 million ($4.28 million), which was payment in full. Accordingly, the Company reversed the bad debt expense of $5.80 million in 2020 which had been recorded earlier.                                    
Leases, description         The purchase price for said shares shall consist of (i) 619,525 shares of common stock at an issuance price of $4.37 per share, (ii) 60,000,000 shares of Series A convertible stock and (iii) a cash payment of RMB 1,617,867,026 (approximately $247 million at a conversion rate of 1:6.55). The shares shall be issued within 15 business days after approval by the Board of Directors and/or shareholders of the Company and Nasdaq approval and the cash shall be paid in three tranches – RMB 390 million (approximately $59.5 million) within 10 days after the agreement is executed, RMB 300 million (approximately $45.8 million) by March 31, 2021 and RMB 927,867,026 (approximately $141.7 million) within 10 days after the shares of Xi’an Taiying are registered to Buyer.                              
Biomass Power Generation Project Lease Agreement [Member]                                        
Organization and Description of Business (Details) [Line Items]                                        
Payment of transfer price                                   $ 18,550,000 ¥ 127,066,000  
Loss from the transfer                                 $ 208,359      
Shenqiu Project [Member]                                        
Organization and Description of Business (Details) [Line Items]                                        
Leasing fees                           $ 286,000 ¥ 1,800,000          
DaTong Recycling Energy [Member]                                        
Organization and Description of Business (Details) [Line Items]                                        
Maturity term       20 years                                
Ownership percentage                               30.00%        
Erdos Metallurgy Company Limited [Member]                                        
Organization and Description of Business (Details) [Line Items]                                        
Ownership percentage       7.00%           7.00% 7.00%                  
Xi'an TCH Energy Technology Co., Ltd. [Member]                                        
Organization and Description of Business (Details) [Line Items]                                        
Ownership percentage       93.00%                                
Xian Tch [Member]                                        
Organization and Description of Business (Details) [Line Items]                                        
Ownership, Description                   On June 15, 2013, Xi’an TCH and Erdos entered into a share transfer agreement, pursuant to which Erdos sold its 7% ownership interest in the JV to Xi’an TCH for $1.29 million (RMB 8 million), plus certain accumulated profits. On June 15, 2013, Xi’an TCH and Erdos entered into a share transfer agreement, pursuant to which Erdos sold its 7% ownership interest in the JV to Xi’an TCH for $1.29 million (RMB 8 million), plus certain accumulated profits.                  
Erdos TCH [Member]                                        
Organization and Description of Business (Details) [Line Items]                                        
Amount of ownership interest                   $ 1,290,000 ¥ 8,000,000                  
Leases, description                               During this period, Erdos will compensate Erdos TCH RMB 1 million ($145,460) per month, until operations resume.        
Da Tang Shi Dai [Member]                                        
Organization and Description of Business (Details) [Line Items]                                        
Ownership percentage                               30.00%        
TianYu XuZhou Recycling Energy [Member]                                        
Organization and Description of Business (Details) [Line Items]                                        
Ownership percentage                               40.00%        
Xi'an Huaxin New Energy Co., Ltd [Member]                                        
Organization and Description of Business (Details) [Line Items]                                        
Repayment of loan | shares                               47,150,000        
Xi'an Zhonghong New Energy Technology Co [Member]                                        
Organization and Description of Business (Details) [Line Items]                                        
Ownership, Description                 Zhonghong is engaged to provide energy saving solution and services, including constructing, selling and leasing energy saving systems and equipment to customers. On December 29, 2018, Shanghai TCH entered into a Share Transfer Agreement with HYREF, pursuant to which HYREF transferred its 10% ownership in Zhonghong to Shanghai TCH for RMB 3 million ($0.44 million). The transfer was completed on January 22, 2019. The Company owns 100% of Xi’an Zhonghong after the transaction.                      
Hongyuan Huifu Venture Capital Co. Ltd [Member]                                        
Organization and Description of Business (Details) [Line Items]                                        
Description of business agreement           pursuant to which Xi’an Zhonghong transferred Chengli CDQ WHPG station (‘the Station”) as the repayment for the loan of RMB 188,639,400 ($27.54 million) to HYREF. Xi’an Zhonghong, Xi’an TCH, Guohua Ku and Chonggong Bai also agreed to a Buy Back Agreement for the Station when certain conditions are met (see Note 8). The transfer of the Station was completed January 22, 2019, at which time the Company recorded a $624,133 loss from this transfer.                            
Transfer Agreement, description Zhonghong, Tianyu and Huaxin signed a transfer agreement to transfer all assets under construction and related rights and interests of Xuzhou Tian’an Project to Tianyu for RMB 170 million including VAT ($24.37 million) in three installment payments. The 1st installment payment of RMB 50 million ($7.17 million) to be paid within 20 working days after the contract is signed. The 2nd installment payment of RMB 50 million ($7.34 million) is to be paid within 20 working days after completion of the project construction but no later than July 31, 2020. The final installment payment of RMB 70 million ($10.28 million) is to be paid before December 31, 2020. The Company received the payment in full for Tian’an Project as of December 31, 2020.                                      
Biomass Power Generation Project Lease Agreement [Member] | Xian Tch [Member]                                        
Organization and Description of Business (Details) [Line Items]                                        
Leasing fees                       $ 239,000                
Biomass Power Generation Project Lease Agreement [Member] | Erdos TCH [Member]                                        
Organization and Description of Business (Details) [Line Items]                                        
Leasing fees | ¥                         ¥ 1,500,000              
Lease period                       9 years 6 months 9 years 6 months              
China Orient Asset Management Co., Ltd [Member] | HYREF Fund [Member]                                        
Organization and Description of Business (Details) [Line Items]                                        
Subscribed amount of initial capital contribution                 $ 0.10                     ¥ 0.90