Most coal plants in the United States were built before 1990">Most coal plants in the United States were built before 1990
(Mon, 17 Apr 2017) Coal-fired electricity generators accounted for 25% of operating electricity generating capacity in the United States and generated about 30% of U.S. electricity in 2016. Most coal-fired capacity (88%) was built between 1950 and 1990, and the capacity-weighted average age of operating coal facilities is 39 years.
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