Wood waste ~66% input Shredded Tires ~ 30% input Landfill gas ~ 4% input The project burns about 5,000,000 scrap tires per year LFG pipline from Polk County North Central Landfill The Ridge Generating Station is particularly innovative in terms of its fuel sources. It burns a combination of approximately 55% urban wood waste, 35% scrap tires, and 10% landfill gas (percentages on a BTU input basis). It consumes about 300,000 tons per year of wood waste, which are obtained in a 100-mile radius around the project site tiresin Central Florida, including the Tampa and Orlando metropolitan areas. Wood waste comes from a variety of urban sources, such as residential yard waste, the clean wood fraction of construction & demolition debris, tree trimmings, scrap pallets, and mill waste. "The 39-megawatt Ridge Generating Station in Polk County, Fla., burns 300,000 tons per year of urban wood waste from the Tampa and Orlando metropolitan areas, five million discarded tires, and methane recovered from the neighboring county landfill and piped to the plant."