Our annual report on electricity generation capacity in the United States breaks down the current and imminent generation of electricity by type of fuel, location, and ownership type. The report also looks at retirements and planned retirements and cancellations over the past five years.
As of February 2021, America has approximately 1.2 million megawatts of generation capacity. The largest fuel source for this capacity is natural gas (44%), followed by coal (19%). Nuclear, hydro, and wind together account for about one-quarter of capacity. Solar currently constitutes more than 4% of all capacity.
This report also analyzes prospective generation capacity in four categories — under construction, permitted, application pending, and proposed. Natural gas, solar, and wind projects account for 97% of all capacity under construction, and 2020 was the first year that saw more than 10,000 MW of wind generation capacity added. Solar and wind together account for 79% of likely capacity additions in 2021. No coal-fired plants are permitted or under construction.