We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Regulations for Emissions from Vehicles and Engines

Lumped Parameter Model (LPM) for Light-Duty Vehicles

EPA’s Lumped Parameter Model (LPM) is a free, desktop computer application that estimates the effectiveness (i.e., carbon reduction) of various technology combinations, or “packages,” in a manner that accounts for synergies between technologies.

LPM v3.10

EPA used LPM V3.10 to support the 2016 Draft Technical Assessment Report.

LPM v2.12

EPA used LPM V2.12 to support the 2017-2025 Final Light-Duty Vehicle Greenhouse Gas Rulemaking.

Regulations for Emissions from Vehicles and Engines Home