ARPA-E Archived Funding Opportunities

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  DE-FOA-0002459 OPEN 2021 Funding Opportunity Announcement (FOA) 4/6/2021 09:30 AM ET 8/31/2021 09:30 AM ET

DE-FOA-0002459: OPEN 2021

This FOA marks the fifth OPEN solicitation in the history of ARPA-E. The previous OPEN solicitations were conducted at the inception of the agency in 2009 and again in 2012, 2015, and 2018. OPEN 2021 therefore continues the three-year periodic cycle for ARPA-E OPEN solicitations. An OPEN solicitation provides a vitally important mechanism for the support of innovative energy R&D that complements ARPA-E’s primary mechanism, which is through the solicitation of research projects in focused technology programs.

ARPA-E’s focused programs target specific areas of technology that the agency has identified, through extensive interaction with the appropriate external stakeholders, as having significant potential impact on one or more of the Mission Areas described in Section I.A of the FOA. Awards made in response to the solicitation for focused programs support the aggressive technical targets established in that solicitation. Taken in total, ARPA-E’s focused technology programs cover a significant portion of the spectrum of energy technologies and applications.

ARPA-E’s OPEN FOAs ensure that the agency does not miss opportunities to support innovative energy R&D that falls outside of the topics of the focused technology programs or that develop after focused solicitations have closed. OPEN FOAs provide the agency with a broad sampling of new and emerging opportunities across the complete spectrum of energy applications and allow the agency to “take the pulse” of the energy R&D community. OPEN FOAs have been and will continue to be the complement to the agency’s focused technology programs – a unique combination of approaches for supporting the most innovative and current energy technology R&D. For instance, one-third of the sixty examples of most successful ARPA-E projects featured in ARPA-E Impact volumes ( resulted from OPEN solicitations. Potential applicants to this FOA are strongly encouraged to examine the OPEN projects in these volumes and all of the projects supported in the previous four OPEN solicitations ( for examples of the creative and innovative R&D ARPA-E seeks in its OPEN solicitations.


  • OPEN 2021 FOA Full Application Mod 1 (Last Updated: 7/16/2021 04:31 PM ET)

Previous Versions

  • OPEN 2021 FOA - Concept Paper (Last Updated: 2/11/2021 03:10 PM ET)

Application Forms and Templates

The following forms and templates may be used as part of the application submission. Note that these forms and templates do not necessarily constitute all the documents required for a complete application. Please refer to the 'Application and Submission Information' of the published announcement to learn more about the required application content requirements.

Concept Paper

  • OPEN 2021 - Concept Paper Template (Last Updated: 2/8/2021 06:16 PM ET)

Full Application

  • OPEN 2021 - Technical Volume Template (Last Updated: 7/16/2021 04:05 PM ET)
  • SF-424 (Last Updated: 7/16/2021 04:07 PM ET)
  • Budget Justification/ SF-424A Workbook (Last Updated: 8/24/2021 04:14 PM ET)
  • Budget Justification/ SF-424A Workbook Guidance (Last Updated: 8/24/2021 04:15 PM ET)
  • Business Assurances & Disclosures Form - Template (Last Updated: 7/16/2021 04:36 PM ET)
  • Business Assurances & Disclosures Form - Sample (Last Updated: 7/16/2021 04:39 PM ET)
  • Summary Slide Template (Last Updated: 7/16/2021 04:39 PM ET)
  • Summary For Public Release Template (Last Updated: 7/16/2021 04:40 PM ET)
  • Software Commercialization Plan Template (Last Updated: 7/20/2021 02:10 PM ET)
  • Replies to Reviewer Comments Template (Last Updated: 7/16/2021 04:41 PM ET)

Contact Information

    Please contact the email address above for questions regarding ARPA-E’s online application portal, ARPA-E eXCHANGE.
    Please contact the email address above for questions regarding Funding Opportunity Announcements. ARPA-E will post responses on a weekly basis to any questions that are received. ARPA-E may re-phrase questions or consolidate similar questions for administrative purposes. ARPA-E will not pre-assess an Applicant’s proposal. Prospective Applicants must review the technical requirements of the FOA and independently determine whether their proposed concept warrants a submission.

Submission Deadlines

  • Concept Paper Submission Deadline: 4/6/2021 9:30 AM ET
  • Full Application Submission Deadline: 8/31/2021 9:30 AM ET
  • View Full Application Reviewer Comments Period: 10/19/2021 5:00 PM ET – 10/25/2021 5:00 PM ET