How many power plants are there under Huaneng Group?

Huaneng Group's power plants include: confluence river thermal power plant, Donghailaer thermal power plant, Manzhouli Guangming thermal power plant, Hailaer thermal power plant, yakeshi thermal power plant, Huaneng Yimin thermal power plant, Lingquan thermal power plant, Zhalantun thermal power plant, Huaneng Hegang thermal power plant, Huaneng Xinhua thermal power plant, Wulanhaote thermal power plant, Huaneng Changshan thermal power plant, Xilinhot second thermal power plant, Xilinhot first thermal power plant, Shangdu thermal power plant, Baotou second thermal power plant, Huaneng Yingkou thermal power plant, Huaneng Dandong Thermal Power Plant, Baotou No.1 Thermal Power Plant, Wulashan Thermal Power Plant, Huaneng Beijing Thermal Power Plant, Fengzhen Thermal Power Plant, Hohhot Thermal Power Plant, Baotou No.3 Thermal Power Plant, Huaneng Dalian Thermal Power Plant, Huaneng Yangliuqing Thermal Power Plant, Dalat Thermal Power Plant, Wuhai Thermal Power Plant, Haibowan Thermal Power Plant, Huaneng Shang 'an Thermal Power Plant, Huaneng Weihai Thermal Power Plant, Huaneng Dezhou Thermal Power Plant, Huaneng Yushe Thermal Power Plant, Huaneng Hanfeng Thermal Power Plant, Huaneng