Ocean Thermal Energy Corporation, together with its subsidiaries, engages in the development of projects for renewable power generation, desalinated water production, and air conditioning worldwide. It is involved in the design and development of ocean thermal energy conversion, and seawater and lake water air conditioning plants for commercial properties, utilities, and municipalities. The company produces electricity through ocean thermal electrical conversion plants and provides air conditioning for large commercial buildings or other facilities through seawater air conditioning and lake source cooling plants. It also produces fresh and desalinated water for human consumption, agricultural, mariculture, and fish farming/aquaculture uses. In addition, the company is involved in the development and commercialization of EcoVillages, a socially, economically, and ecologically sustainable communities. It has strategic relationships with DCO Energy, LLC. The company was founded in 1998 and is headquartered in Philadelphia, Pennsylvania.