In this presentation for the webinar, “Tracking Renewable Energy for Compliance with the Clean Power Plan,” David Farnsworth highlights how existing renewable energy credit (REC) tracking systems can help states demonstrate compliance with the Clean Power Plan (CPP). He illustrates a variety of approaches to calculating the avoided emissions resulting from renewable energy generation, and discusses the potential for REC trading systems to facilitate interstate trading and modular regional approaches to compliance. Mr. Farnsworth suggests that renewable energy benefits will likely need to be quantifiable, non-duplicative, permanent, verifiable, and enforceable in order to comply with the Clean Power Plan, and advises that RECs ownership and retirement can help states meet this standard.