This evolutionary process, still making its impact felt today, became increasingly pronounced in the years between 1910 and 1930. Even before the first blues recordings were made, the blues idiom began filtering into the mainstream of American parlor sheet music, under the influence of Tin Pan Alley songwriters such as W. C. Handy.
Wind energy supplied 4.7 percent of the total electricity generated in the U.S. in 2015, enough electricity to supply the equivalent of all electricity demand in Colorado, Oklahoma, and Kansas. Solar energy, including utility-scale and distributed solar, generated 0.94 percent of all U.S. electricity in 2015. The emerging opportunities in American wind power will be on display at this yearâs WINDPOWER Conference & Exhibition in New Orleans, May 23-26.
In 2014, the United States generated about 4,093 billion kilowatthours of electricity. 1 About 67% of the electricity generated was from fossil fuels (coal, natural gas, and petroleum). Major energy sources and percent share of total U.S. electricity generation in 2014: 1  Coal = 39%. 2  Natural gas = 27%. 3  Nuclear = 19%. 4  Hydropower = 6%. 5  Other renewables = 7%.