Washington, D.C. · Grantmakers

Foundations That Fund Environment & Conservation in Washington, D.C.

Imperigo has identified 930 funders that made 7,688 grants totaling $4.3B to 292 environment & conservation organizations in Washington, D.C., with a median grant of $49K. Every figure below is drawn from IRS Form 990 filings through 2025.

Environment & Conservation Funding in Washington, D.C.

Total granted $4.3B
Funders 930
Grants 7,688
Organizations funded 292

Top Funders — page 1 of 4

1. United States Energy Foundation
105 grants to 44 organizations · largest $21.0M · through 2024 · 14.1% of their giving
$75.7M
2. Rf Catalytic Capital Inc
24 grants to 16 organizations · largest $4.5M · through 2024 · 19.4% of their giving
$46.5M
3. The Greater Cincinnati Foundation
30 grants to 9 organizations · largest $14.9M · through 2024 · 8.9% of their giving
$71.2M
4. Hopewell Fund
14 grants to 5 organizations · largest $11.0M · through 2024 · 10.9% of their giving
$47.8M
5. Rockefeller Philanthropy Advisors Inc
79 grants to 34 organizations · largest $10.9M · through 2024 · 5.6% of their giving
$69.7M
6. Foundation for the Carolinas
58 grants to 17 organizations · largest $20.0M · through 2024 · 4.0% of their giving
$82.2M
7. Co-Impact Philanthropic Funds Inc
3 grants to 1 organization · largest $9.2M · through 2024 · 20.5% of their giving
$16.4M
8. 2040 Foundation Inc
10 grants to 3 organizations · largest $3.8M · through 2024 · 22.6% of their giving
$16.3M
9. The Jeremy and Hannelore Grantham Environmental Trust
16 grants to 6 organizations · largest $3.5M · through 2024 · 11.8% of their giving
$26.9M
10. Democracy Fund Voice Inc
22 grants to 1 organization · largest $4.0M · through 2024 · 20.1% of their giving
$12.1M
11. Jewish Communal Fund
61 grants to 21 organizations · largest $46.9M · through 2024 · 2.4% of their giving
$101.7M
12. Combined Jewish Philanthropies of Greater Boston Inc
48 grants to 21 organizations · largest $5.1M · through 2024 · 4.3% of their giving
$54.7M
13. Fiduciary Charitable Foundation DBA Fiduciary Trust Charitable
21 grants to 9 organizations · largest $7.7M · through 2024 · 12.7% of their giving
$17.2M
14. Clean Future Action Fund Inc
4 grants to 2 organizations · largest $3.9M · through 2024 · 36.6% of their giving
$10.4M
15. Rockefeller Family Fund Inc
29 grants to 14 organizations · largest $3.6M · through 2024 · 12.6% of their giving
$13.9M
16. Skoll Fund C/O Silicon Valley Community Foundation
16 grants to 7 organizations · largest $3.0M · through 2024 · 9.9% of their giving
$16.8M
17. Tides Foundation
89 grants to 35 organizations · largest $10.2M · through 2024 · 2.5% of their giving
$65.0M
18. The Sobrato Foundation
9 grants to 6 organizations · largest $3.0M · through 2023 · 26.4% of their giving
$7.0M
19. Trust for Energy Innovation
3 grants to 3 organizations · largest $5.0M · through 2021 · 30.9% of their giving
$6.6M
20. Catalyst4 Inc
4 grants to 3 organizations · largest $7.0M · through 2024 · 9.1% of their giving
$12.7M
21. Power Forward Communities Inc
1 grant to 1 organization · largest $5.0M · through 2024 · 91.6% of their giving
$5.0M
22. The Pew Charitable Trusts
76 grants to 20 organizations · largest $5.3M · through 2024 · 3.3% of their giving
$28.4M
23. Breakthrough Energy Action Inc
11 grants to 5 organizations · largest $4.0M · through 2024 · 10.2% of their giving
$8.2M
24. Sandler Foundation
12 grants to 2 organizations · largest $2.2M · through 2024 · 4.4% of their giving
$18.7M
25. The Heising-Simons Action Fund
27 grants to 9 organizations · largest $500K · through 2024 · 11.7% of their giving
$6.8M

Funders are ordered by how much of their overall giving goes to environment & conservation work in Washington, D.C., not by dollar totals alone — a foundation that concentrates its giving here is usually a better prospect than a larger one for which this is a rounding error. 18 of the funders counted here are donor-advised fund sponsors, which grant on behalf of individual donors and accept no applications; they are marked and ranked last.

Other Causes Funded in Washington, D.C.

About This Data

A grant appears here when a funder reported it on its IRS Form 990 and the recipient organization is classified under the NTEE group covering environment & conservation work, with an address in Washington, D.C.. Grants are counted from the 2025 filing year backward.

Some 990 grant schedules list a recipient by name and address without an EIN, and those grants cannot be matched to a classification — so the totals above represent identifiable environment & conservation funding in Washington, D.C., not every dollar that reached the sector. Figures are a floor, not a ceiling.

Looking for organizations rather than funders? Browse all nonprofits in Washington, D.C.

Research Washington, D.C. funders in depth

Full grant histories, recipient lists, officer compensation, multi-year financials, and exports for every foundation Imperigo tracks.