High Quality Content by WIKIPEDIA articles! The Energy sector of Ohio is compromised of thousands of companies and cities representing the oil, natural gas, coal, solar, wind energy, fuel cell, biofuel, geothermal, hydroelectric, and other related industries. Oil and natural gas accounts for $3.1 billion annually in sales while ethanol generates $750 million. The state is #2 nationally in solar manufacturing as Toledo is considered a national solar hub, nicknamed "Solar Valley." It is recognized internationally as the "Fuel Cell Corridor", and Hamilton is poised to become the biggest municipal provider of renewable energy in the Midwest, and one of the largest in the country, with over 70%. In 2008, the state led the country in alternative energy manufacturing according to Site Selection Magazine, while the natural gas industry has experienced growth due to the Great Shale Gas Rush.