On February 27, NRECA submitted comments on a proposed rule from the Environmental Protection Agency (EPA) that sets out how the agency will evaluate state plans for emissions guidelines that cover existing sources. Under the Clean Air Act, states develop plans for how to regulate existing sources within their borders to meet goals set out by EPA through emissions guidelines. If EPA finds a state plan insufficient, it can disapprove the plan and implement its own. States are in a better position to understand the nuances of their sources and how different regulatory requirements will affect them. NRECA asked the agency to ensure that states have sufficient time to conduct necessary outreach and develop adequate plans – including the ability to consider reliability and other factors on the remaining useful life of sources.