Hydroelectric power plant operating expenses 1998-2022
Operating expenses for conventional and pumped storage hydroelectric power plants run by major United States investor-owned electric utilities totaled 12.44 mills per kilowatt-hour in 2022. According to the source, a mill is a monetary cost and billing unit equal to 1/1000 of the U.S. dollar (equivalent to 1/10 of one cent). That same year, operating expenses for fossil steam power plants amounted to 43.88 mills per kilowatt-hour.
