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Tribal and Insular Area Grants: Diesel Emissions Reduction Act (DERA)

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2021 Tribal and Insular Area Request for Applications OPEN

EPA anticipates awarding approximately $5 million in DERA funding under this announcement. A total of $4.5 million will be made available to tribal governments (or intertribal consortia) and Alaska Native villages, and $500,000 will be made available to insular area governments. EPA anticipates awarding five to ten cooperative agreements to tribal governments (or intertribal consortia) and Alaska Native villages and two to four cooperative agreements to insular area governments.

This year's Request for Applications (RFA) has no mandatory cost share requirement and sets funding limits to $800,000 for tribal applicants and $250,000 for insular area applicants. Each applicant may submit up to two applications.

Although funding for both tribes and insular areas is planned under this single RFA, the applications will be competed separately.  Tribal applications will be reviewed, ranked and selected by one review panel, and insular area applications will be reviewed, ranked and selected by a separate review panel. EPA’s ten regional offices will manage awards. The number and size of cooperative agreements made under this announcement are subject to the availability of funds, the quality of applications received, and other considerations.

Tribal and Insular Area RFA Flyer (PDF)(1 pp, 92 K, April 2021) Please download this flyer to share with potential applicants.

Important Dates

Activity Date
Wednesday, April 28, 2021
Information Session Webinars

Webinar 1 held on Wednesday, May 12, 2021 

Webinar 2 held on Tuesday, May 18, 2021

Webinar 3 held on Thursday, May 20, 2021

Friday, June 25, 2021 at 12:00 p.m. (ET)
Deadline for Applications Friday, July 09, 2021 at 11:59 p.m. (ET)
Anticipated Notification of Selected Applicants Friday, August 13, 2021
Anticipated Funding of Awards October-December 2021

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Supporting Information for RFA

See the documents below for supporting information for the 2021 Tribal and Insular Area Grants RFA. Information for past funding opportunities can be found on the Tribal Grants: Past Program Documents page.

Questions and Answers

Applicants may submit questions regarding the 2021 Tribal and Insular Area Request for Applications (RFA) at Please include “Tribal and Insular Area RFA” in the subject line. All applicants are encouraged to review the 2021 Tribal and Insular Area Questions and Answers (PDF)(15 pp, 200 K, June 24, 2021) document for further clarification of the RFA. The deadline for submitting questions via email is Friday, June 25, 2021 at 12:00 p.m. (ET). The final posting of the questions and answers document will be Wednesday, June 30, 2021. All questions and answers, including those from all webinar information sessions, will be added to this document.

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Eligible Applicants

Under this solicitation, only tribal governments (or intertribal consortiums), Alaska Native villages, or insular area government agencies which have jurisdiction over transportation or air quality, are eligible to apply for assistance, in accordance with 42 U.S.C. 16131 and Assistance Listing 66.039. 

Tribal governments are defined as Federally recognized Indian tribal governments, which are any Indian Tribe, band, nation, or other organized group or community (including Alaska Native Villages) certified by the Secretary of the Interior as eligible for the special programs and services provided through the Bureau of Indian Affairs as well as any organization or intertribal consortium that represents Federally recognized tribes. 

Intertribal consortium is defined as a partnership between two or more eligible tribal governments as defined above, that is authorized by the governing bodies of those tribes to apply for and receive assistance under this program. Intertribal consortia are eligible to receive assistance under this program only if the consortium demonstrates that all members of the consortium meet the eligibility requirements for the program and authorize the consortium to apply for and receive assistance by submitting to EPA documentation of (1) the existence of the partnership between Indian tribal governments, and (2) authorization of the consortium by all its members to apply for and receive the assistance. 

Insular areas include the U.S. Virgin Islands, Guam, American Samoa, and the Commonwealth of the Northern Mariana Islands, as defined in 48 U.S.C. §1469a.   

Please refer to the full RFA for specific information about this competition.

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Eligible Uses of Funding

Eligible diesel emissions reduction solutions include verified retrofit technologies, verified idle reduction technologies, verified aerodynamic technologies, verified low rolling resistance tires, certified engine replacements and conversions, and certified vehicle or equipment replacement.

Eligible diesel vehicles, engines and equipment may include:  

  • Marine Engines on Fishing Vessels
  • Nonroad engines, equipment, or vehicles used in construction, handling of cargo (including at ports or airports), agriculture, mining, or energy production (including stationary generators and pumps)
  • School buses
  • Electrified parking spaces
  • Heavy duty highway vehicles, such as dump trucks, water trucks, fire trucks
  • Locomotive Engines

For more examples of previously funded projects, see Awarded Grants. For specific information about eligible uses of funding for this competition, refer to the full RFA.

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Application Process

Application packages must be submitted electronically to EPA through ( by the deadline to be considered for funding.

The registration process also requires that your organization have a Unique Entity Identifier (e.g. DUNS number) and a current registration with the System for Award Management ( and the process of obtaining both could take a month or more. Please note that registrations do expire, and inactive accounts must re-register to be able to submit an application.

For more information on the registration requirements that must be completed in order to submit an application through, go to and click on “Applicants” on the top of the page, and then click the “Get Registered” link on the page. All applications must now be submitted through using the “Workspace” feature. Information on the Workspace feature can be found at the Workspace Overview Page.

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Tools and Resources for Applicants

Reporting Templates for Grantees

Free Viewers

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