Covanta Honolulu, known locally as the H-POWER (Honolulu Program of Waste Energy Recovery) facility, began commercial operation in May 1990 and is owned by the City and County of Honolulu. Covanta acquired the operating contract in 1993. Located in Kapolei, on the island of Oahu, the facility serves the municipal waste disposal needs of more than 850,000 residents and more than six million visitors to the island each year. The facility processes up to 3,000 tons per day of municipal solid waste, generating up to 90 megawatts of energy– enough to meet nearly 8 percent of Oahu's energy needs. H-POWER also recovers thousands of tons of ferrous (steel) and non-ferrous (aluminum alloy) metal for recycling each year. In 2012, Covanta completed an expansion that increased the facility's processing capacity by an additional 900 tons per day. The project was featured in Power Magazine.