Huaneng Power International, Inc., through its subsidiaries, generates and sells electricity and heat to the regional or provincial grid companies in the People's Republic of China and Singapore. It is involved in the development, investment, construction, operation, and management of power plants and related projects; and generation, wholesale, and retail of power and other relating utilities. The company generates power from coal, wind, gas, oil, biomass, solar, and hydro resources. It is also involved in the sale of coal ash and lime; provision of loading warehousing and conveying services; photovoltaic power generation projects development and construction; and provision of thermal energy and cold energy services, as well as thermal heating services. In addition, the company engages in the repair of power equipment; provision of water supply and transportation services; construction and operation of electricity distribution networks and heating pipe networks; power supply, energy transmission, and substation project contracting activities; cargo transportation along domestic coastal areas; port management, investment, and development activities; and port provision, and cargo loading and storage activities. Further, it is involved in the aquaculture and agriculture irrigation activities, as well as provides environment engineering, waste recycling consultancy, and industrial waste management and recycling services. Additionally, it sells raw and processed coal; and provides central heat, and plumbing and pipe installation services, as well as desalinated water. As of March 31, 2018, the company had controlled generating capacity of 104,301 megawatts and a total generating capacity of 91,783 megawatts. Huaneng Power International, Inc. was founded in 1994 and is headquartered in Beijing, the People's Republic of China.