The Environmental Protection Agency's Clean Energy Supply Programs are voluntary programs helping to increase the use of renewable-sourced power and CHP systems among leading U.S. organisations. Programs include:Green Power Partnership and Combined Heat andPower (CHP) Partnership.Green power is electricity produced from a subset of renewable resources, such as solar, wind, geothermal, biomass, and low-impact hydro. Organizations are encouraged to purchase green power as a way to reduce the environmental impacts associated with conventional electricity use. The Green Power Partnership offers expert advice, technical support, tools and resources in return for organisation signing an agreement to purchase green power that meets or exceed Partnership benchmarks. The more than 1,200 organisations on the current partner list are collectively buying more than 17 billion kWh of green power annually, equivalent to the annual carbon dioxide emissions from electricity use of more than 1.4 million average American homes.The CHP Partnership works closely with energy users, energy service companies, the CHP industry (manufacturers, consultants, and project developers), state and local governments, federal agencies, private organizations, and other stakeholders to support the development of new projects and promote their energy, environmental, and economic benefits. The CHP Partnership encourages implementation of clean energy technologies by providing information, connections to technology providers, and government-branded recognition to participants. For example, the Partnership maintains the CHP Partnership Funding Database which tracks federal and state CHP and biomass fiical incentives as well as regulations that remove unintended barriers to CHP or biomass project development such as standardised interconnection rules, net metering rules, or output-based regulations. Through 2009, the CHP Partnership has helped install more than 460 CHP projects, representing 4,850 megawatts (MW) of capacity.