Pennsylvania's marketed natural gas production reached 6.2 trillion cubic feet in 2018, making it the nation's second-largest natural gas producer, primarily from the Marcellus Shale. The U.S. Energy Information Administration maintains a portal for state energy information to provide data on the energy market conditions in various regions throughout the country. Pennsylvania also ranked second in the nation in electricity generation from nuclear power, which supplied 39 percent of the state’s net electricity generation. Visit EIA’s redesigned State Energy Portal to learn more about energy in every state. EIA redesigned the portal to create an interactive site that includes profiles highlighting facts and data unique to each area at www.eia.gov/beta/states.