Core Insights - China Huaneng Group's subsidiaries have applied for a patent related to voltage control methods and devices, indicating a focus on enhancing power system efficiency and stability [1][4] Company Overview - China Huaneng Group Clean Energy Technology Research Institute Co., Ltd. was established in 2010, located in Beijing, with a registered capital of 1,337.57 million RMB. The company has invested in 12 enterprises and participated in 4,354 bidding projects, holding 5000 patent records [2] - Huaneng Zhejiang Energy Sales Co., Ltd. was founded in 2017 in Hangzhou, with a registered capital of 210 million RMB. The company has participated in 141 bidding projects and holds 125 patents [2] - Huaneng (Zhejiang) Energy Development Co., Ltd. was established in 2020 in Hangzhou, with a registered capital of 67,505.38 million RMB. The company has invested in 44 enterprises and participated in 391 bidding projects, holding 404 patents [2] - Zhejiang Canghua Offshore Wind Power Technology Co., Ltd. was founded in 2022 in Wenzhou, with a registered capital of 35 million RMB. The company has participated in 44 bidding projects and holds 32 patents [3]