Wheelabrator Technologies is on a roll. A subsidiary of solid-waste processing giant Waste Management, the company operates municipal-waste incinerators and trash-to-steam plants that convert 7 million tons of municipal solid waste annually into energy. Wheelabrator operates 16 waste-to-energy plants that burn solid waste to produce high-pressure steam; that steam turns turbines, generating more than 800 MW of electricity -- enough to power more than 900,000 homes. It also has five independent power producers (IPPs) that combust a combination of trash, waste wood, tires, coal, and gas to generate another 200 MW of electricity. Wheelabrator operates in the northeastern US, California, Florida, and Washington.