Promethean Clay

SOL #: DARPA-PS-26-16Solicitation

Overview

Buyer

DEPT OF DEFENSE
Defense Advanced Research Projects Agency (Darpa)
DEF ADVANCED RESEARCH PROJECTS AGCY
ARLINGTON, VA, 222032114, United States

Place of Performance

Place of performance not available

NAICS

Research and Development in the Physical (541715)

PSC

National Defense R&D Services; Department Of Defense Military; Applied Research (AC12)

Set Aside

No set aside specified

Timeline

1
Posted
Feb 18, 2026
2
Last Updated
Mar 18, 2026
3
Submission Deadline
May 6, 2026, 1:00 PM

Qualification Details

Fit reasons
  • NAICS alignment with historical contract wins in similar service areas.
  • Scope strongly matches core technical capabilities and delivery model.
Risks
  • Past performance thresholds may require one additional teaming partner.
  • Potential clarification needed on staffing minimums before bid/no-bid.
Next steps

Validate eligibility requirements, assign capture owner, and schedule partner outreach to confirm teaming strategy before submission planning.

Quick Summary

The Defense Advanced Research Projects Agency (DARPA) is soliciting proposals for Promethean Clay, a program focused on developing revolutionary energy storage systems through a mechanical co-design framework. This Other Transaction (OT) for Prototype Agreement aims to achieve generational improvements in performance, safety, and operational stability by obviating rigid materials and ensuring domestic sourcing. Full proposals are due May 6, 2026, at 1:00 PM ET.

Opportunity Overview

DARPA's Promethean Clay program seeks innovative approaches to energy storage, moving beyond evolutionary improvements. The core concept involves rethinking energy storage systems as mechanical and chemical systems, reducing the need for rigid, heavy exoskeletons. This will lead to enhanced performance, integrated thermal resilience and safety, and a pathway for domestic materials and manufacturing. Research focusing solely on evolutionary improvements, new chemistries without addressing rigid materials, or individual components without system-level consideration is excluded.

Program Structure & Requirements

The program is structured into three phases over 48 months: Phase 1 (24 months) for Power Source Design and Validation, Phase 2 (12 months) for Integration, and Phase 3 (12 months) for Application. An optional 3-month Phase 0 may be required for security preparation. Key technical requirements include:

  • Developing energy storage systems using a mechanical and chemical co-design approach to overcome rigidity.
  • Achieving reduced packaging fraction, with packaging materials acting as hermetic interfaces.
  • Enabling free-form design capabilities for various form factors.
  • Ensuring domestic sourcing pathways for all materials and manufacturing.
  • Maintaining or surpassing current safety, thermal resilience, and operational performance standards.
  • Compliance with NIST SP 800-171 Rev. 2 (SPRS score 88+) for handling Controlled Unclassified Information (CUI) is a critical prerequisite for award.
  • Limiting Oxygen Index (LOI) testing with a minimum of >26% for safety.

Contract Details

This is a Solicitation for Other Transaction (OT) for Prototype Agreements under 10 U.S.C. § 4022. Multiple awards are anticipated. The solicitation is not set aside for specific organizations, but encourages participation from Historically Black Colleges and Universities, Small Businesses, and Minority Institutions. Non-U.S. organizations are ineligible to participate.

Submission & Evaluation

Proposers were required to submit an abstract as an initial screening step. Full proposals are by invitation only and must include Volume I (Technical and Management Proposal) and Volume II (Price Proposal). Mandatory oral presentations (30 minutes + 45 minutes Q&A) are part of the evaluation. Numerous attachments provide detailed instructions and templates for abstract, technical, and pricing submissions, including specific cost spreadsheets (Attachments F, M) and a Task Description Document (Attachment H). Abstracts were evaluated on technical concept and potential to achieve program goals. Full proposals will be evaluated on Overall Scientific and Technical Merit, Potential Contribution and Relevance to the DARPA Mission, and Budget and Price.

Key Dates & Contact

  • Proposal Due Date: May 6, 2026, 1:00 PM ET
  • Anticipated Oral Presentation Dates: May 5–14, 2026
  • Agency Contact: Promethean_Clay@darpa.mil

People

Points of Contact

PS CoordinatorPRIMARY

Files

Files

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Promethean Clay | GovScope