On August 3, FERC announced that its preliminary assessment found that 81GW of coal-fired generating capacity is likely to retire because of EPA power plant rules. The study comes as a response to a request from Sen. Lisa Murkowski (R-AK) made last May for FERC to conduct an assessment of whether EPA rules on climate, water, and air pollution could force the shutdown of coal-fired power plants and jeopardize electricity reliability.