According to enterprise data, China Huaneng Group Clean Energy Technology Research Institute Co., Ltd. (referred to as "Qingneng Institute") is a clean energy technology research and development institution directly under Huaneng Group, in which Huaneng Group holds 90% of the shares and Xi 'an Thermal Engineering Research Institute Co., Ltd. holds 10%. Qingneng Institute is mainly engaged in technology research and development, technology transfer, technical services, key equipment development and project implementation in the fields of coal-based clean power generation and transformation, renewable energy power generation, pollutant and greenhouse gas emission reduction.