A: 'GUST' is an acronym that stands for a series of four recent tax laws that also made changes to how retirement plans are operated. âEGTRRAâ is the acronym for the tax law enacted in 2001.
Of the renewable energy sources used to generate electricity in the United States, hydropower makes the biggest contribution. Water used to spin a turbine is a cheap, non-polluting domestic source of energy. But hydropower brings with it other environmental impacts to consider. More about hydroelectric.
What is U.S. electricity generation by energy source? In 2016, about 4.08 trillion kilowatthours (kWh) of electricity 1 were generated at utility-scale facilities in the United States. 2 About 65% of this electricity generation was from fossil fuels (coal, natural gas, petroleum, and other gases), about 20% was from nuclear energy, and about 15% was from renewable energy sources.