Contract opportunity

Solid-State Energy Conversion from Heat to Electricity Request for Information (RFI)

Sources Sought from Department of Defense.

Data as of Oct 24, 2026. Sources: SAM.gov and Grants.gov. Snapshot govcon-directory-20261024T104923Z-2151694.

This product uses the Grants.gov API but is not endorsed or certified by the U.S. Department of Health and Human Services. Counts and totals are computed by DSE from public SAM.gov and Grants.gov notices. Text from Grants.gov may be shortened or have contact details removed. The original notice on Grants.gov is the authoritative version.

Closing in 30 days

Notice details

Agency
Department of Defense
Sub-tier agency
DEFENSE ADVANCED RESEARCH PROJECTS AGENCY (DARPA)
Notice type
Sources Sought
Solicitation number
DARPA-SS-27-01
NAICS
541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
Product/service code
AC11
Posted
Oct 24, 2026
Response deadline
Nov 23, 2026
Source
SAM.gov

Description

The Defense Advanced Research Projects Agency (DARPA) Defense Sciences Office (DSO) is requesting information on the current state of the art and technological limitations of solid-state direct thermal-to-electric energy conversion technologies. We define solid state energy conversion as systems that convert a temperature differential directly into electrical energy without utilizing mechanical moving parts (e.g., pistons, turbines, or rotary alternators). This RFI seeks to identify the best possible solid state heat engine performance across a wide operating temperature range, factors that limit performance, and the most attractive use cases if these highly efficient solid state heat engines could be made today. This survey of limits, challenges and use cases will identify opportunities for research and development to inform potential program(s) in this area.

Summarized from the official notice.

Official notice

View on SAM.gov →

Requirements and amendments are controlled by the official notice.

DSE verdict

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Prior awards (USAspending)

Department of Defense obligated $14,777,575 under NAICS 541715 on awards whose period of performance started in the last 12 months.

Source: USAspending.gov, U.S. Department of Treasury, Bureau of the Fiscal Service, https://www.usaspending.gov. Accessed Oct 24, 2026. Award totals are computed by DSE from USAspending.gov award data.

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Frequently asked questions

When is the response deadline?

The published deadline is Nov 23, 2026. That is 30 days after the data date.

What NAICS code applies?

NAICS 541715, Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology).

Which agency issued this notice?

Department of Defense.

Where is the official notice?

The link under Official notice opens the source listing.