Solar power in Vermont on rooftops can provide 18% of all electricity used in Vermont. A 2012 estimate suggests that a typical 5 kW system costing $25,000 before credits and utility savings will pay for itself in 10 years, and generate a profit of $34,956 over the rest of its 25-year life.
Net metering is available for up to at least 500 kW generation, but is capped at 4% of utilities peak demand. Excess generation is rolled over each month but is lost once each year. Group net metering is also allowed. Vermont is given an A for net metering and a C for interconnection. A feed-in tariff was created in 2009, but is limited to 50 MW and is fully subscribed. The cap increases by 5 to 10 MW/year starting in 2013 until it reaches 127.5 MW in 2022. It is available for solar, wind, methane, and biomass. Seven solar projects are receiving payments, of $0.30/kWh, for 25 years.
Vermont has five solar arrays of at least 1 MW, the 2.2 MW SunGen Sharon 1 in Sharon completed in July 2012, the 2.1 MW concentrating photovoltaics array installed in July 2011 in South Burlington, the 1.5 MW photovoltaic array also in South Burlington installed in October 2011, the 1 MW photovoltaic array in Ferrisburgh, and the 2 MW Williamstown Solar Project.