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S-2235Senate2025-10-29Environmental Protection

Diesel Emissions Reduction Act of 2025

YourVoice.Now Summary

EnvironmentCorporate Benefits

Federal grants to swap out old diesel engines could run through 2029 — most people see no change.

Environment

Help replacing old diesel engines — up to $100 million yearly through 2029

The EPA hands out grants and rebates to swap out or clean up old diesel engines, but that power ended after 2024. The $100 million a year is a cap through 2029, not a promise.

Corporate Benefits

Grants for businesses replacing diesel engines — five more years

Trucking and construction firms can apply too, not just school districts, states, and tribes. The grant covers part of the cost of a cleaner engine or a newer truck.

More about this bill

You would not pay anything new, and no form would change. What would change is a federal program that helps school districts, states, and truck fleets replace old diesel engines. Its spending authority ran out after 2024. Moving that end date to 2029 would revive the program for five more years. The program pays part of the cost to replace or clean up older engines. That covers school buses, big rigs, construction gear, boats, and trains. Older diesels give off more soot and smog. Setting a limit of $100 million a year is not the same as spending it. Congress still votes on the money each year, and for 2024 it approved $90 million. Families near busy roads, ports, or a bus yard would notice first, if anyone does.

Congressional Summary

Diesel Emissions Reduction Act of 2025 This bill reauthorizes through FY2029 a diesel emissions reduction program under which the Environmental Protection Agency provides grants, rebates, or loans for replacing diesel engines or retrofitting the engines with pollution control technologies.

Legislative Subjects

Air qualityClimate change and greenhouse gasesMotor fuelsMotor vehicles

Details

Congress
119th
Chamber
Senate
Status
summarized
Action
Reported to Senate
Action Date
2025-10-29
Date Added
2026-04-09
Source
Congress.gov →

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