The report uses the most recent information available for consistency; this means electricity price data is from 2024, and gasoline and diesel fuel prices are from 2025. It produces the vast majority of its electricity through natural gas and nuclear, with small contributions from solar, hydroelectric, and other sources. MaineALEC says, “Maine reflects some of the highest average retail electricity prices in the nation. MassachusettsALEC says, “Massachusetts maintains some of the highest retail electricity prices in the nation. Domestic generation capacity is dominated by natural gas, with smaller contributions from solar, hydroelectric, wind, and petroleum.
