# Rads to Watts Program Solicitation

Canonical: https://abierto.us/opportunities/darpaps2527

- Solicitation number: DARPA-PS-25-27
- Notice type: Solicitation
- Status: Closed. Deadline was August 20, 2025
- Department: Department of Defense
- Agency: Defense Advanced Research Projects Agency
- Contracting office: Def Advanced Research Projects Agcy (HR0011)
- NAICS: 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
- Product or service code: AC12 National Defense R&D Services; Department Of Defense - Military; Applied Research
- First posted: June 20, 2025
- Last posted: August 8, 2025
- SAM.gov: https://sam.gov/workspace/contract/opp/330a9991d6034858819e7df23ca41c1f/view

## Description

The Defense Advanced Research Projects Agency (DARPA) is soliciting innovative proposals for directly converting radiation energy into electricity, focusing on radiation voltaics (also known as radiovoltaics). Typical radiovoltaic unit cell configured devices can produce power at the milliwatt-level. Rads to Watts seeks approaches that can scale unit cells to broad-area collection volumes to produce power at kilowatt-levels over relevant timescales.

Proposed work should include innovative approaches that enable revolutionary advances in high fluence-resilient, radiation-hardened, charge-carrying materials and techniques that specifically apply to radiovoltaics. Specifically excluded from Rads to Watts is research that primarily results in incremental improvements to the existing state of practice and research that applies to direct conversion methods other than radiovoltaics.

## Publications

- June 20, 2025: Solicitation, due August 20, 2025. Notice bb29898410fa46a7ba52e930b44ebeea. https://sam.gov/workspace/contract/opp/bb29898410fa46a7ba52e930b44ebeea/view
- June 20, 2025: Solicitation, due August 20, 2025. Notice f655dbe2fb434ba89678b17f247f48bc. https://sam.gov/workspace/contract/opp/f655dbe2fb434ba89678b17f247f48bc/view
- August 8, 2025: Solicitation, due August 20, 2025. Notice 330a9991d6034858819e7df23ca41c1f. https://sam.gov/workspace/contract/opp/330a9991d6034858819e7df23ca41c1f/view

## Points of contact

- BAA Coordinator, RadsToWatts@darpa.mil

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Source: SAM.gov Contract Opportunities bulk extract. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/darpaps2527.