Hydroelectric conventional power has long been one of the most important renewable energy sources in the United States. Washington is one of the largest consumers of hydroelectric power. Wind generation is generally evenly spread out across the continental United States. With about over 226 terawatt hours of electricity, wind power generation has seen a steady increase. In comparison, solar power generation totaled around 37 terawatt hours in the same year. Solar energy sources tend to be concentrated in the western part of the country.
In 2016, a total of around 97 British thermal units of primary energy were consumed in the United States. Renewable energy sources accounted for around 9.8 percent of total U.S. energy consumption. The United States is expected to continue its renewable energy consumption, reaching approximately 16.4 quadrillion British thermal units in 2040.