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Closed: Heavy duty diesel vehicle and transit bus replacement grant

The Minnesota Pollution Control Agency (MPCA) seeks public, private, and nonprofit owners of heavy-duty diesel on-road trucks and transit buses in Minnesota to apply to this competitive grant opportunity to partially fund new, cleaner versions of these vehicles.

The grant aims to reduce diesel emissions and improve air quality and public health by removing older diesel vehicles and equipment from operation and replacing them with new, less-polluting models. New on-road vehicles funded by this grant can be diesel, diesel hybrid electric, natural gas, or propane. Projects funded will reduce diesel emissions in Minnesota; fund new vehicles and pieces of equipment around the state; and fund a mixture of clean, alternative fuel technologies.

Proposals are due no later than 4:30 p.m. Central Time on April 28, 2023.

Questions and answers

Applicants who have any questions regarding this RFP must email questions to, subject line: “Heavy Duty Diesel Grant 2023”, no later than 4:30 p.m. Central Time on April 12, 2023.  Answers to questions will be posted frequently on the online SWIFT portal.

MPCA personnel not listed are not authorized to discuss this RFP with applicants outside of the question and answer forum. Contact regarding this RFP with any MPCA personnel may result in disqualification.

Informational meeting

Recording: MPCA held an informational meeting on this grant round on Feb. 22. (28 min.)


Eligible applicants include for-profit, nonprofit, individuals, and public entities, including state, local, and Tribal governments that own and operate vehicles and/or equipment within the eligibility section of the RFP. Applicants must be based in Minnesota or have a branch office in Minnesota.

While multi-organizational collaboration is allowed, no single entity may be a part of multiple applications.

Available funds

Approximately $1,995,756 is available.

The maximum award per vehicle replacement is up to 25% of eligible project costs.

How to apply

The request for proposal (RFP) and application materials can only be viewed through the online SWIFT portal. The RFP is termed an “Event” within the SWIFT system.

  1. Go to the online SWIFT portal.
  2. Click "Bidding opportunities".
  3. Find and view the event name "MPCA-Heavy Duty Diesel" or Event ID: 2000013894.
  4. Click "View Bid Package" to see the RFP and forms. (There’s no need to log in to see the documents.)

Grant applications are only accepted through the SWIFT portal. Applicants interested in applying will need to register as a bidder in the system by clicking on the SWIFT Supplier Portal, then "Register for an Account and Register as a Bidder". Note: If an applicant is already registered in the SWIFT system as a supplier (previously known as a vendor), they do not need to register as a bidder. They will need their supplier ID.

Visit the online SWIFT portal under "Informational Tips" and "Supplier Portal Help" for more information. For questions about applying through SWIFT, please contact the vendor assistance help desk at 651-201-8100, option 1.