BMW. BMW Manufacturing earned a 2003 Green Power Leadership Award for using landfill gas to generate a portion of the power needed to operate its Spartanburg, South Carolina manufacturing facility. Landfill gas is piped from a landfill to the manufacturing facility to power its two gas turbines, which generate approximately 11 MW of electricity for the factory, and also to supply hot water for cooling, heating, and hot water needs. BMW credits EPA’s Landfill Methane Outreach Program for educating the company on the advantages of landfill gas in terms of environmental impact and lower energy costs.

For the 2013 calendar year reporting period, BMW Spartanburg’s annual green power usage was 69,383,477 kWh—37% of its power usage.

GM. GM Fort Wayne Assembly—home of the Chevrolet Silverado and GMC Sierra and 43% powered by methane captured from decomposing trash in a nearby landfill—ranks Nº 5 among the US Environmental Protection Agency’s top 30 generators of onsite green power.

For the reporting period from 1 March 2014 - 1 March 2015, GM Fort Wayne generated and used 53,260,800 kWh of green power.

At the head of EPA’s Top 30 list is Walmart, with 158,732,026 kWh of green power usage (8% of total), from solar and wind. Apple takes the second spot, with 112,064,200 kWh (17%) from biogas and solar. The US Department of Energy (DOE) is in third, with 110,179,367 kWh (2%) from biomass, solar and wind.