Electricity routinely flows among the Lower 48 states, with almost 10% of U.S. electricity generation traded across state lines. Generation of electricity exceeds its consumption in 25 states, and excess electricity is transmitted across state lines. In 2023, utilities in Virginia brought in the most electricity from other states, with 50.1 million megawatthours (MWh) in net electricity interstate receipts, or 36% of the state’s total electricity supply. Generators in Pennsylvania moved the most electricity outside state borders in 2023, with 83.4 million MWh of power shipped out, or 26% of generation in Pennsylvania.