Broadrock Renewables LLC and Orange County, Calif., have opened what the company called the second largest landfill gas-to-energy (LFGTE) plant in the United States.

The Tarrytown, N.Y.-based Broadrock Renewables LLC said in a news release that the new facility at Orange County’s Olinda Alpha Landfill in Brea has a generating capacity of 32.5 megawatts of energy capacity. Broadrock adds its existing 5 megawatts to that capacity total.

The U.S. Department of Energy provided a $10 million stimulus grant for the project.

The city of Anaheim is purchasing the electricity and the city of Brea provided infrastructure support.

Broadrock is part of the Macquarie Group’s Macquarie Infrastructure Partners Inc., which recently bought WCA Waste Corp. and also owns Waste Industries USA Inc.