Document Type

Working Paper

Publication Date



On July 6, 2010, the U.S. Environmental Protection Agency (EPA) proposed a Clean Air Act rulemaking to reduce sulfur dioxide (SO2) and nitrogen oxide (NOx) emissions from power plants in the eastern United States. If it survives legal scrutiny, the rule will impose a hybrid cap-and-trade program with state-specific SO2 and NOx emission budgets and limited interstate trading. This paper discusses the rule's requirements, how it compares to its predecessor (the Clean Air Interstate Act), the projected impact on air quality and public health, and implications for future climate change policy.


Environmental Law | Law