| Huaneng Shandong Power Generation | 20.00 | - | - | |
| China Huaneng Group Co Ltd North China Branch | 100.00 | - | - | |
| Huaneng Coal Co Ltd | 100.00 | - | - | |
| Guangdong Yuehua Power Co Ltd | 49.00 | - | - | |
| China Huaneng Group Co Ltd Southern Branch | 100.00 | - | - | |
| Huaneng Tianjin Igcc Co Ltd | 70.28 | - | - | |
| Sichuan Huaneng Hydropower Development | 51.00 | - | - | |
| Huaneng Baishan Gangue Power Co Ltd | 60.00 | - | - | |
| Huaneng International POWER Development Corp | 75.00 | - | - | |
| Huaneng Capital Service Co Ltd | 61.22 | - | - | |
| Huaneng Gansu Engery Development Co Ltd | 100.00 | - | - | |
| Shanxi Huaguang Power Generation | 40.00 | - | - | |
| China Huaneng Group Co Ltd Hunan Branch | 100.00 | - | - | |
| Huaneng Hulunbeier Energy Development | 100.00 | - | - | |
| Huaneng Shaanxi Power Generation | 100.00 | - | - | |
| North United Power Corp | 70.00 | - | - | |
| Huaneng Songyuan Thermal Power Co Ltd | 100.00 | - | - | |
| Guangdong Energy Group Co Ltd | 24.00 | - | - | |
| Green Coal Electricity | 52.00 | - | - | |
| Genuity | 50.00 | - | - | |
| Liaoning Nenggang Power Co Ltd | 32.97 | - | - | |