These models provide estimates of the impact of air pollution emission changes on ambient particulate matter concentrations, translate these estimates into health effect impacts, and then monetize the impacts. Reduced-form techniques determine health impacts by either (1) using a benefit per ton estimate based on full-scale photochemical modeling, or (2) using a simplified air quality model that is based on the responsiveness of pollutant lev-els to changing emissions (a source–receptor relationship) [11].Examples of computational tools such as these include the Geo-graphic Information System (GIS) based Ben MAP tool as well as the Power plant Impact Estimator (PIE) and the Co-Benefits Risk Assessment (COBRA) Screening Model. These models allow energy planners to evaluate energy policy and planning alternatives in order to determine which scenarios are most likely to meet climate and energy goals and therefore warrant more indepthanalysis.