The US Environmental Protection Agency (EPA), under the new leadership of Administrator Gina McCarthy, and in coordination with other departments and the White House, has initiated a national campaign to discuss the importance of greenhouse gas (GHG) mitigation and adaptation to climate change. With respect to mitigation, under the President’s Climate Change Action Plan, the EPA is to re-propose its new source performance standards (NSPS) for GHGs from new electric generating units (EGUs) by September 20, 2013. The agency has already submitted that proposal to the Office of Management and Budget for review, a prerequisite to final issuance. News reports of White House meetings with leading Democrats indicate that the EPA has tried to bolster the defensibility of the original April 2012 proposal by creating separate performance standards for different types of fuels, rather than requiring all source (e.g., oil, coal, gas) types to meet one standard, as was originally proposed (1,000 lbs CO2/MwH, roughly the equivalent of a new combined cycle gas-fired EGU). If the EPA does so, the key question will be how strict a standard it selects for coal-fired power and whether that standard can be met with state-of-the-art technology or only in conjunction with carbon capture and sequestration (CCS) or other new technologies. Further, the EPA’s initial proposal relied on the commercial readiness of CCS within a decade, so it also may provide new coal-fired sources with more time to build and implement that technology. The EPA would need to finalize its proposal before June 1, 2014, in order to allow it to propose an NSPS for existing EGUs by that date, as also ordered by the president. The EPA is soon to initiate major outreach on the existing EGU rule, which will be even more controversial and complex than the new unit rule.