A unit of electrical power, the megawatt is used to quantify how much electricity a power plant produces. To put those numbers in perspective, the average output of a coal fired power plant in the United States is about 239 megawatts. Not only will this floating solar farm theoretically outpace that, but the reservoir that the panels will be installed in is also a source of hydroelectric power, with a capacity of about 250 megawatts. That's a total maximum output of 600 megawatts.