NY Times article:
The Tennessee Valley Authority sharply accelerated a shift away from coal as an energy source on Thursday, saying it would shut down eight electricity-generating units that together will burn nearly a fifth of its coal this year. TVA is to generate 20 percent of its electricity from coal, instead of the current 38 percent. It also plans to increase the use of renewable energy sources like solar and hydropower to 20 percent, from the current 15.7 percent. Bill Johnson, said experts were studying whether more coal-fired plants should be shut down later.
Two other developments hastened the shutdowns: the advent of cheap natural gas, which has turned coal into a costlier fuel, and falling demand for electricity. Thursday’s announcement was the second and biggest step the authority had taken to reduce its appetite for coal. In 2011, T.V.A. agreed to retire 18 coal-fired generating units to settle a lawsuit by states and environmental groups charging violations of the Clean Air Act. Four of those 18 units have been shuttered so far.
Eventually, the authority hopes to get a fifth of its power each from coal, natural gas and renewables and the remaining two-fifths from nuclear plants.