China Power International Development Limited, also known as just China Power, is a Chinese electric power company incorporated in Hong Kong in 2004. The former ultimate parent company China Power Investment Corporation, a Chinese state-owned enterprise also has the initials "CPI" but in the case of the parent company the "I" stands for "Investment" not "International". State Power Investment Corporation became the new parent company of CPID after CPI Group was merged with another state-owned enterprise. CPID is one of several Hong Kong listed subsidiaries of five national power generating groups in the Mainland China. Huadian Group, Huaneng Group, and Datang Group also have Hong Kong listed subsidiaries, in each case with the word "International" added to the title. CPID also a red chip company, a term for foreign incorporated listed company with Chinese government background in the Stock Exchange of Hong Kong. The fifth of the Big Five China power groups, Guodian Group has a listed subsidiary in Shanghai. As of 31 May 2018, the market capitalization of China Power International Development was HK$21.379 billion. Wikipedia