On 15 April 2011 the U.S. EPA announced a settlement with the Tennessee Valley Authority (TVA) to resolve alleged Clean Air Act violations at 11 of its coal-fired plants in Alabama, Kentucky, and Tennessee. The settlement will require TVA to invest a TVA estimated $3 to $5 billion on new and upgraded state-of-the-art pollution controls that will prevent approximately 1,200 to 3,000 premature deaths, 2,000 heart attacks and 21,000 cases of asthma attacks each year, resulting in up to $27 billion in annual health benefits. TVA will also invest $350 million on clean energy projects that will reduce pollution, save energy and protect public health and the environment.