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==Power portfolio==
As of 2012 the Tennessee Valley Authority now is producing only one-third of its power with coal-fired generating units. That's a sharp decline from fiscal 2011, when coal-fired boilers produced 52 percent of TVA's power, and it is the first time in decades that coal has not fueled the majority of the electricity generated by the agency.<ref>Tom Charlier, [http://www.commercialappeal.com/news/2012/oct/08/coal-no-longer-king-in-tva-region-as-more-gas-to/ "Coal no longer king in TVA region as more gas-fired plants used to generate electricity,"] The Commercial Appeal, October 8, 2012.</ref>
===Overview===