Mega Grants ($1M+) — Climate Adaptation

As of September 2026, Grantoria lists 28 Mega Grants ($1M+) — Climate Adaptation — 12 open right now, across 12 funding agencies. Award amounts range $1K to $1,000M. The next application deadline is September 18, 2026. All listings are free, with direct links to the official application.

Not sure which grants fit your organization? Try the Grant Finder — match in 5 questions →

28total grants
12open now
12agencies
$1K–$1,000Mfunding range
Sep 18next deadline
OPEN 26 days left Hard to apply

FYs 2024 through 2026 – Promoting Resilient Operations for Transformative, Efficient, and Cost-saving Transportation (PROTECT) Competitive Grant Program Notice of Funding Opportunity

The intent of the PROTECT Competitive Grant Program is to fund projects to improve the resilience of the surface transportation system, including highways, public transportation, ports,…

🏛 DOT Federal Highway Administration 📋 CFDA 20.284 ⏰ Oct 9, 2026 💰 $1 – $60,000,000
View details →
OPEN 48 days left Hard to apply

RESTORE Act Centers of Excellence Research Grants Program

Treasury is publishing multiple funding opportunity notices for its RESTORE Act grant programs. This announcement applies only to the Centers of Excellence Research Grants Program.Trust Fund…

🏛 U.S. Dept. of Treasury RESTORE Act Program 📋 CFDA 21.015 ⏰ Oct 31, 2026 💰 $5,710,210 – $14,518,510
View details →
OPEN Hard to apply

ERDC Broad Agency Announcement

The U.S. Army Corps of Engineers (USACE) Engineer Research and Development Center (ERDC) is issuing this announcement for various research and development topic areas. The ERDC…

🏛 Engineer Research and Development Center 📋 CFDA 12.630 ⏰ Jan 1, 2027 💰 up to $999,999,999
View details →
OPEN Hard to apply

WaterSMART: Desalination Construction Projects

Through WaterSMART, the Bureau of Reclamation (Reclamation) leverages Federal and non-Federal funding to work cooperatively with States, Tribes, and other entities as they plan for and…

🏛 Bureau of Reclamation 📋 CFDA 15.591 ⏰ Aug 26, 2027 💰 $1,000 – $120,000,000
View details →
OPEN Hard to apply

WaterSMART Enhancing Water Resources Projects

The objective of the WaterSMART Enhancing Water Resources Projects funding opportunity is to invite eligible entities to apply for funding to implement projects per the authorizing…

🏛 Bureau of Reclamation 📋 CFDA 15.507 ⏰ Sep 8, 2027 💰 $50,000 – $3,000,000
View details →

Frequently asked questions

How many mega grants ($1m+) — climate adaptation are available?
Grantoria currently lists 28 mega grants ($1m+) — climate adaptation, of which 12 are open for applications right now. The database is refreshed daily from official federal sources (Grants.gov and SAM.gov).
When is the next deadline?
The next application deadline is September 18, 2026 — about 5 days away. Deadlines vary by program; open any grant to see its exact closing date and application window.
Who is eligible for mega grants ($1m+) — climate adaptation?
Eligibility is set by each funding program, but mega grants ($1m+) — climate adaptation in this category most often support: State Government, Tribal Nation, County Government and Tribal Organization. Check each grant's eligibility summary for the exact applicant types and requirements.
How much funding is available?
Award sizes range from $1K to $1,000M, depending on the program and applicant. Each grant shows its specific funding range where the agency has published one.
Is Grantoria free to use?
Yes — Grantoria is completely free. No account or subscription is required to browse mega grants ($1m+) — climate adaptation, view deadlines and eligibility, or reach the official application.
How do I apply?
Open any grant to see its full profile — eligibility, required documents, deadlines and a direct link to the official application on the funding agency's website. You apply through the federal portal; Grantoria simply helps you find the right opportunity.