During a November 13 meeting of the National Association of Regulatory Utility Commissioners, Gina McCarthy, Environmental Protection Agency assistant administrator for air and radiation, said that any rule regulating greenhouse gas emissions from existing power plants is several years away. The agency proposed a new source performance standard for new fossil fuel-fired power plants in April, for the first time setting a source-specific emissions limit for greenhouse gases, and is considering about 2 million comments it received on the proposed rule.