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New Hampshire State Clean Diesel Program

DERA grant program aims to reduce emissions from older diesel engines.

old diesel engineThe New Hampshire Clean Diesel Grant Program is a program funded by EPA through the Diesel Emissions Reduction Act (DERA). The program is managed by the Air Resources/Technical Services Bureau of NHDES. The goal of this grant program is to reduce the emissions from older diesel engines in the state. Projects eligible for funding include idle reduction technologies, engine replacement, vehicle and equipment replacement, exhaust controls, and aerodynamic technologies. Funding opportunities are guided each year by our annual DERA work plan. See the 2021 NHDES Work Plan.

Grant funding requires a match by the grantee; the match requirement depends on the project (i.e. replacing a diesel vehicle with an electric vehicle requires a 55% match, replacing an old diesel vehicle with a newer, cleaner diesel vehicle requires a 75% match, etc.).

Funding for this program is made possible through funding from the Environmental Protection Agency's (EPA) Diesel Emission Reduction Act (DERA) Program, and additional funding from the New Hampshire VW Mitigation Trust. This program is a reimbursement program only.

Funding Opportunity - Closed on December 17, 2021

November 1, 2021 - Request for Proposals

NHDES requests proposals for eligible diesel emission reduction projects utilizing EPA DERA federal fiscal year 2021 funds. Timelines, funding amounts, eligibility restrictions and more can be found in the Request for Proposals, which is available through the link below.

The designated contact person for this RFP is Ricky DiCillo, Grants Coordinator, NHDES – Air Resources Division. Any questions related to this RFP must be submitted by email to

Past Funding

Scoring Results and Funding Amounts:

Recent Grant Recipients:

EPA also offers competitive grants separate from NH’s State Clean Diesel Program. For more information about these grants please go to EPA's DERA webpage.