HR 2140119th CongressIn Committee

Diesel Emissions Reduction Act of 2025

Introduced: Mar 14, 2025

Standard Summary

Comprehensive overview in 1-2 paragraphs

This bill, H.R. 2140, titled the Diesel Emissions Reduction Act of 2025, would extend the authorization for the Diesel Emissions Reduction Program (DERP) by changing the sunset date. Specifically, it amends the Energy Policy Act of 2005 to move the program’s expiration from 2024 to 2029. The text provided does not create new program rules or authorize new funding levels; it simply ensures DERP continues to operate beyond 2024 by extending the period during which the program can be funded and carried out. The bill was introduced in the House on March 14, 2025, by Ms. Matsui (along with co-sponsors) and referred to the Committee on Energy and Commerce.

Key Points

1Short title: The act would be cited as the “Diesel Emissions Reduction Act of 2025.”
2Reauthorization action: It amends the Energy Policy Act of 2005 to extend the program’s authorization from 2024 to 2029.
3Specific change: Section 797(a) of the Energy Policy Act of 2005 is amended by striking “2024” and inserting “2029.”
4Scope of change: The bill provides no new program provisions or funding amounts; it only extends the period during which DERP can operate.
5Legislative process note: Introduced in the House by Ms. Matsui (with several co-sponsors) and referred to the Committee on Energy and Commerce for consideration.

Impact Areas

Primary group/area affected: State and local governments, fleets (including commercial trucking, transit, school buses), and other entities eligible for DERP grants or assistance that implement diesel emission reduction projects.Secondary group/area affected: Manufacturers and providers of diesel retrofit/upgrade technologies, fleet operators, and communities affected by diesel pollution through improved air quality.Additional impacts: By extending DERP, the bill supports ongoing efforts to reduce particulate matter and other pollutants from diesel engines, which can improve air quality and public health in communities with high diesel traffic. The bill does not specify funding levels, so actual funding and project choices would continue to be determined through appropriations and DERP program processes once enacted.

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