Deadline: January 15, 2026.

Halcyon’s 2026 Global Climate Fellowship will serve founders across the world who are tackling pressing challenges in climate adaptation and resilience. Through a hybrid programming format, selected entrepreneurs will attend a one-week, in-person residency in Washington, DC, five virtual programming days, and a final one-week, in-person residency in Los Angeles, California.

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)
• And more

ELIGIBILITY CRITERIA

They’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.

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 their Alumni page for more.

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

Find more information on the OFFICIAL WEBSITE