Deadline:
January 15, 2026
Location(s)
Online United States of America
Residency weeksin Washington, DC and Los Angeles, CA
Overview
Details
Sectors
Solutions addressing climate adaptation and resilience, including but not limited to:
- Renewable and resilient energy systems and storage
- Adaptive infrastructure and green building technologies
- Climate intelligence and early-warning systems
- Climate-smart agriculture and food systems
- WaterTech (water security, resilient water systems, and more)
- Blue economy and coastal resilience
- Financial resilience to climate shocks (including, but not limited to, climate insurance)
Program Structure & Timeline
The final cohort is selected from 10 ventures across the globe. The program is delivered in a hybrid modality through a virtual kickoff meeting, two one-week, in-person residencies in the US, and four additional virtual programming days.
Founders receive training in Halcyon’s methodology on product-market fit, capital strategy, and leadership, as well as access to critical resources and connections to accelerate their ventures.
Timeline:
- December 8th, 2025: Application window opens
- January 15th, 2026: Last chance to submit your eligibility application to be considered for this application window! Halcyon team begins reviewing eligibility applications
- Mid-January, 2026: Halcyon team sends out invitational applications to select candidates on a rolling basis
- January 23rd, 2026: Invitational application deadline
- February 24-25th 2026: Virtual pitch days for finalists
- March 6th, 2026: Selected founders notified
- April 7th, 2026: Virtual Program Kickoff
- April 24th-May 1st, 2026: Residency Week #1 in Washington, DC
- May 20th 2026: Virtual Meeting #2
- June 17th, 2026: Virtual Meeting #3
- July 8th, 2026: Virtual Meeting #4
- August 12th, 2026: Virtual Meeting #5
- September 11th-September 18th, 2026: Residency Week #2 in Los Angeles, CA
Opportunity is About
Eligibility
Candidates should be from:
Description of Ideal Candidate
Eligibility
We’re looking for for-profit startups building scalable solutions tackling pressing climate adaptation and resilience challenges across the globe.
- Location: Global
- Stage: Must have a working Minimum Viable Product (MVP) and a realistic potential to scale. Applicants must demonstrate early user feedback or evidence of early commercial validation, such as pilots, LOIs, or revenue.
- Team:
- May apply with up to one Co-Founder.
- Applicant must be the CEO or hold primary decision-making power.
- Must be fluent in English (programming will be in English).
- Must be at least 21 years of age by the start of the program.
- Program Engagement: Applicant(s) must commit to participating in all residencies, program activities, events, and in-person and virtual sessions.
- Impact: Must be developing a product and venture which contributes towards one or more of the UN’s 17 SDGs.
Dates
Deadline: January 15, 2026
Cost/funding for participants
Benefits
- $10K in Amazon Web Services, Inc. (AWS) credits
- $6K equity-free stipend per venture
- Workshops with experts in product-market fit, capital strategy, and leadership
- Professional advisors
- Networking with investors and varied stakeholders in climate in Washington, DC and Los Angeles, CA
- Access to Halcyon’s global community of 600+ founders
- Continued benefits after your program—see our Alumni page for more
Un-save Opportunity
Internships, scholarships, student conferences and competitions.
