Hydro Ottawa Holding Inc. (Hydro Ottawa) is a private company 100 per cent owned by the City of Ottawa and whose core businesses are electricity distribution, renewable energy generation, and energy and utility services. Hydro Ottawa owns and operates three primary subsidiary companies: Hydro Ottawa Limited – delivering electricity to more than 340,000 customers in the City of Ottawa and the Village of Casselman; Portage Power – the largest Ontario-based municipally-owned producer of green power that has over 128 megawatts of installed green generation capacity – enough to power 107,000 homes; and Envari – an energy solutions company offering products and services that help reduce energy consumption and costs for municipalities, industrial and commercial clients, and various local distribution companies.