| HONGNENG (H.K.) INTERNATIONAL LIMITED | Private company limited by shares | Live |
| HONGNENG INDUSTRIAL (HONGKONG) CO., LIMITED | Private company limited by shares | Dissolved |
| HONGNENG (HONGKONG) TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Shanghai Hongneng Industry (Hong Kong) Company Limited | Private company limited by shares | Live |
| HK HONGNENG INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| HONGNENG INT'L HK CO., LIMITED | Private company limited by shares | Live |
| HK HONGNENG INT'L TECHNOLOGICAL DEV. LIMITED | Private company limited by shares | Dissolved |
| HONGNENG TRADE LIMITED | | Live |