On April 14, 2011, the EPA announced the settlement of a twelve year dispute with Tennessee Valley Authority (TVA) over Clean Air Act violations. In the settlement, TVA agrees to permanently retire 2,700 MW of coal power from Alabama, Kentucky and Tennessee and invest an estimated $3 to $5 billion on new and upgraded state-of-the-art pollution

On February 23, 2011, the U.S. Environmental Protection Agency (EPA) released final rules regulating hazardous air pollutant (HAP) emissions from boilers at major sources of HAPs (Boiler MACT) and boilers at minor or area sources of HAPs (Boiler GACT), for Commercial and Industrial Solid Waste Incinerators (CISWI) and for defining what constitutes a solid waste