At the end of 2016, the United States had 56 large-scale fuel cell generating units greater than 1 megawatt (MW), totaling 137 megawatts (MW) of net summer capacity. Most of this capacity (85%) has come online since 2013. Fuel cells collectively provided 810,000 megawatthours (MWh) of electricity in 2016, representing 0.02% of total U.S. electricity generation.