Total US energy production reached 81.7 quadrillion British thermal units, or quads, in 2013, enough to satisfy 84 percent of total US energy demand, according to the US Energy Information Administration data.
Natural gas was the largest domestically produced energy resource for the third year in a row and, together with the other fossil fuels such as coal, crude oil, and hydrocarbon gas liquids, accounted for more than three quarters of US energy production, according to the EIA’s Monthly Energy Review, May 2014.
In total, the United States consumed 97.5 quads of energy, 82 percent of which was fossil fuels. Renewable and nuclear energy made up 10 percent and 8 percent, respectively, of US energy consumption in 2013.
The portion of US energy consumption supplied by domestic production has been increasing since 2005, when it was at its historical low point of just 69 percent. Since 2005, production of domestic resources, particularly natural gas and crude oil, has been increasing as a result of the application of technologies that can develop harder-to-produce resources. At the same time, reduced road travel, improved vehicle efficiency, and competition among fuels for electric power generation have limited consumption of petroleum and coal.
The last significant rise in the ratio of domestic production to consumption occurred from 1978 to 1982, according to the EIA. During that period, oil consumption declined in response to higher prices and changing policies, and production rose as oil started to flow from Alaska’s North Slope. At the same time, domestic coal production was increasing.
The US solar industry at utility scale projects is expected to account of one-half of one percent of total electricity supply in 2015. And customer-sited generation growth is expected to surpass utility scale output during the same time period, the EIA said in its May 2014 Short-Term Energy Outlook released at the start of that month.