Utilities are under increasing pressure to both decarbonize and account for their achieved GHG reductions. This will require utility EE programs designed to maximize GHG reductions to reliably measure EE’s specific decarbonization impacts. This report will provide technical options for converting energy reductions measured in megawatt-hours to avoided tons of GHG emissions, with the benefits, drawbacks, and preferred use cases for each identify methods states and utilities can use to maximize GHG reductions through their EE portfolios describe the motivations, key policies, programs, and results in states that have begun utilizing these methods