Pennsylvania is a major producer of natural gas from shale formations.

Pennsylvania is one of the leading states in natural gas production from shale formations, particularly from the Marcellus Shale. The Marcellus Shale, located primarily in Pennsylvania, contains vast reserves of natural gas, and advances in hydraulic fracturing (fracking) have made it possible to extract this resource efficiently. The state's natural gas production has dramatically increased over the past decade, contributing significantly to the U.S. energy supply. Pennsylvania’s position as a major producer of natural gas has made it a key player in the nation's energy landscape, while also sparking debates about the environmental impact of fracking.