How to bid on Cattle Run with DARPA

What DARPA is seeking

DARPA’s Cattle Run program aims to develop and demonstrate autonomous spacecraft that use renewable propulsion for persistent access to cislunar space. Phase 1 focuses on a Demonstrator spacecraft and on-orbit data about propulsion, vehicle control, and navigation. Phase 2 aims to create multiple spacecraft and demonstrate persistent cislunar access.

The November 10 Proposers Day will explain the program, address questions, and give potential proposers a forum to meet for teaming. It is an opportunity to understand the program and connect with possible partners.

Key dates and deadline

The deadline is November 4, 2026, at 12:00 p.m. ET. DARPA’s Proposers Day is scheduled for November 10, 2026, from 8:00 a.m. to 5:00 p.m. at the DARPA Conference Center in Arlington, Virginia.

The provided information does not say what action is due by the November 4 deadline. Review the opportunity materials for the deadline instructions and submit any required response by that time.

Who this opportunity may suit

This opportunity may suit firms working in spacecraft, renewable propulsion, autonomous navigation, or vehicle control, as well as organizations that can contribute relevant professional expertise. Potential proposers may also use the event to explore teaming with other participants.

How to access the opportunity

Use “View original source” on the portal to open the opportunity. If the first click takes you to the portal homepage, click it again to go to the bid.

A free account may be needed to view documents, though many bids can be viewed without one. Check the opportunity materials for the response instructions.

Prepare a focused response

Read the solicitation materials carefully and map your capabilities to the stated program objectives. Be specific about relevant experience in propulsion, spacecraft, control, or navigation, and distinguish what your firm can do from work that would require a partner.

If you are considering teaming, identify the capabilities you need and prepare a concise description of what your firm could contribute. Keep track of the stated deadline and follow the response instructions in the opportunity materials.