The U.S. Environmental Protection Agency’s (EPA) Clean Power Plan offers state regulators unique opportunities to leverage the environmental benefits of energy efficiency (EE) and renewable energy (RE) programs as they prepare their state compliance plans. Air regulators play a key role in enabling this outcome. As the compliance planning process is new for many states, it is essential to establish easy, understandable processes for determining and measuring greenhouse gas (GHG) and air quality benefits. States have the opportunity to break out of historical planning processes that often default to new natural gas plants and end-of-pipe controls. At a meeting of the Western Clean Energy Advocates, Christopher James stressed EE and RE as powerful compliance tools in crafting a diverse and flexible state plan to meet the EPA requirements, while also maintaining and improving reliability. He emphasized the value of identifying all benefits of EE, establishing effective evaluation, measurement, and verification processes for EE, exploring EE and RE “power plants,” as well as engaging with state, regional, and EPA actors. Finally, ensuring that new and revised air quality rules treat EE and RE as an equally effective means to achieving compliance can help states leverage these least-cost options.