By Coral Davenport
The New York Times
June 4, 2014

WASHINGTON — A rule proposed by the Environmental Protection Agency would cut carbon pollution from power plants 30 percent from 2005 levels by 2030 – the equivalent, according to the agency, of taking two-thirds of all cars and trucks in America off the road. Here are some things to know about the rule:

• The E.P.A. expects that under the regulation, 30 percent of electricity in the United States will still come from coal by 2030, down from about 40 percent today.

• The E.P.A. estimates that the rule will cost the economy $7.3 billion to $8.8 billion annually, but will lead to benefits of $55 billion to $93 billion, primarily by preventing premature deaths and mitigating respiratory diseases.

• Critics complain that the rule will drive up electricity costs, but the agency forecasts that the rule will increase energy efficiency across the power sector, leading to lower electricity bills when the program is fully implemented in 2030.

• The rule will not, on its own, lower greenhouse gas pollution enough to prevent catastrophic effects of climate change. But, in combination with other regulations, it would allow the United States to meet its commitment to the United Nations to cut carbon pollution 17 percent by 2020 and press other major polluting countries, particularly China and India, to follow suit.

• The draft proposal is just the beginning of the process to cut emissions. The agency will now take public comment and spend the next year completing the proposal before releasing the final rule in June 2015. States will then be given another year to submit compliance plans, or apply for an extension.

• The rule is not an executive order. Under the Clean Air Act, the E.P.A. is required to regulate any substance defined as a pollutant, which the law defined as substances that endanger human life and health. A 2007 Supreme Court decision led to an E.P.A. determination that carbon dioxide is a pollutant, thus requiring that the agency regulate it or be in violation of the law. Read more.

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