Environment grants for nonprofits in Connecticut
542 private foundations reported 1,003 environment grants to organizations in Connecticut on IRS 990-PF returns for tax year 2022 or later, $29.8M in all. 180 of them are based in Connecticut.
Foundations542
Grants on record1,003
Total granted$29.8M
Their typical grant$5,000
Foundations that fund environment in Connecticut
20 of the 542: profiles in our foundation directory first, then by the number of environment grants to Connecticut organizations on their latest return. Each shows its largest such grants.
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Amazonsmile Foundation
Seattle, WA · latest return: tax year 2023- Bantam Lake Protective Association Incorporated, Morris - General support$565
- Aspetuck Land Trust Inc, Fairfield - General support$504
- King Cobra Conservancy Inc, Berlin - General support$460
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The Pfizer Foundation Inc
New York, NY · latest return: tax year 2024- Denison Pequotsepos Nature Center Inc, Mystic - Volunteer program$2,040
- Avalonia Land Conservancy Inc, Old Mystic - Volunteer program$1,750
- Groton Open Space Association Inc, Groton - Matching gifts$1,620
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Gave $6.2M in 2024
Eversource Energy Foundation Inc
Hartford, CT · latest return: tax year 2024- Housatonic Valley Association (Ct), Cornwall Bridge - Support for the environmental programs$10,000
- Harrybrooke Park (Ct), New Milford - Support for the environmental programs that will p$5,000
- Riverfront Recapture (Ct), Hartford - Support for clean energy and environmental steward$3,000
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Gave $16.4M in 2024
Dominion Energy Charitable Foundation
Richmond, VA · latest return: tax year 2024- Waterford Country School Incorporated, Quaker Hill - Nature trails at waterford country school$5,000
- University of Connecticut Foundation Incorporated, Storrs - Conservation ambassadors program (cap)$3,500
- Denison Pequotsepos Nature Center Inc, Mystic - Adventures in nature$3,500
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The Peter and Carmen Lucia Buck Foundation Inc
New York, NY · latest return: tax year 2024- Connecticut Land Conservation Council, Middletown - Land capital grant program$1,850,000
- Connecticut Land Conservation Council, Middletown - General operating support$475,000
- Aspetuck Land Trust, Westport - General operating support$150,000
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Patagoniaorg
Ventura, CA · latest return: tax year 2024- Gather New Haven, New Haven - To support environmental projects.$15,000
- Shred Foundation, Stratford - To support environmental projects.$15,000
- Solar Youth Inc, New Haven - To support environmental projects.$15,000
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Dalio Foundation Inc
Westport, CT · latest return: tax year 2024- Keep Stamford Beautiful Inc, Stamford - Restricted to support stamford parks community partnership initiative$100,000
- Greenwich Green and Clean Inc, Greenwich - To support general operations$15,000
- 4-H Education Center at Auerfarm Inc, Bloomfield - Restricted to support agriculture, natural environment and agriscience skills$14,000
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The Laurie M Tisch Foundation Inc
New York, NY · latest return: tax year 2024- Connecticut Public Broadcasting Inc, Hartford - To further educational, religious, medical, cultural, societal and environmental causes.$25,000
- Take the Field Inc, Norfolk - To further educational, religious, medical, cultural, societal and environmental causes.$16,667
- Young Leadership Addiction Awareness Inc, Westport - To further educational, religious, medical, cultural, societal and environmental causes.$5,145
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Freedom Together Foundation
New York, NY · latest return: tax year 2024- Yale University, New Haven - Sustainability, diversity, and environmental justice$1,650,000
- Inclusive Prosperity Capital Inc, Hartford - Ensuring equity in the clean energy transition: scaling the enerwealth model$500,000
- Yale University, New Haven - Justice, equity, diversity, and sustainability initiativeNot stated
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Gave $185.4M in 2024
The Schmidt Family Foundation
Palo Alto, CA · latest return: tax year 2024- Inclusive Prosperity Capital Inc, Hartford - Centering unrepresented voices in the environmental movement, encouraging a just transition away from fossil…$201,500
- Greenwave Organization Corp, New Haven - Ocean stewardship and research$200,000
- Sound Waters, Stamford - Ocean stewardship and research$139,999
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Gave $1M in 2025
Ion Bank Foundation Inc
Naugatuck, CT · latest return: tax year 2025- Farmington Land Trust Inc, Unionville - "Farmington river accessible viewing platform"$7,500
- Farmington Land Trust Inc, Unionville - "Party in the pasture"$3,000
- Farmington Land Trust Inc, Unionville - Community awards program 25$150
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Gave $1.6M in 2024
The Lazard Charitable Foundation
New York, NY · latest return: tax year 2024- Sound Waters Inc, Stamford - Unrestricted$5,000
- Sharon Green Preservation Association Inc, Sharon - Unrestricted$50
- Sharon Land Trust Inc, Sharon - Unrestricted$50
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Gave $3.9B in 2025
Lilly Endowment Inc
Indianapolis, IN · latest return: tax year 2025- Keep America Beautiful Inc, Stamford - Capacity building support$3,000,000
- Save the Sound Inc, New Haven - Employee matching gift(s)$2,250
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John and Daria Barry Foundation
Miami, FL · latest return: tax year 2024- Connecticut Fund for the Environment - Save the Sound, New Haven - Environmental protection$300,000
- Greenwich Land Trust, Greenwich - Conserves open space, connects our community with the natural world and inspires the next generation of…$10,000
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The Rockefeller Foundation
New York, NY · latest return: tax year 2024- Yale University, New Haven - Surveying the indonesian public about climate and alternative sources of energy$225,000
- Wholesome Wave Inc, Bridgeport - For use by its national produce prescription collaborative toward the costs of an effort to expand produce…$55,000
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Gave $16.2M in 2025
Endeavor Foundation Inc
New York, NY · latest return: tax year 2025- Center for International Management Education Inc, Old Lyme - Increasing collaboration and catalyzing investment for the connecticut river watershed$206,000
- Yale University, New Haven - Program on climate change communications$50,000
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Gave $134.4M in 2024
John Templeton Foundation
West Conshohocken, PA · latest return: tax year 2024- Yale University, New Haven - New research directions probing the nature of dark matter: beyond the current impasse$233,899
- Yale University, New Haven - Understanding the nature of inference: discerning deeper correlations and causation$20,377
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Gave $145.9M in 2024
The McKnight Foundation
Minneapolis, MN · latest return: tax year 2024- Inclusive Prosperity Capital Inc, Hartford - for general operating support$200,000
- Yale University, New Haven - to support institutional diversity and the Environmental Fellows Program$42,000
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Synchrony Foundation
Stamford, CT · latest return: tax year 2025- Bartlett Arboretum Association Inc, Stamford - Funding supports general operations and programming.$110,000
- Keep Stamford Beautiful, Stamford - Funding supports general operations and programming.$100,000
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Gave $148.8M in 2024
The William Penn Foundation
Philadelphia, PA · latest return: tax year 2024- Yale University - School of Forestry and Environmental Studies, New Haven - Environmental reporting through yale E360$125,000
- Yale University - School of Forestry and Environmental Studies, New Haven - 2023 environmental fellows program$37,500
Search more environment funders giving in Connecticut →
Organizations several of these foundations fund
Connecticut organizations that received environment grants from two or more of the foundations above, on the same returns.
| Organization | Funders | Grants total |
|---|---|---|
| Yale University New Haven | 4 | $2,179,276 |
| Inclusive Prosperity Capital Inc Hartford | 3 | $901,500 |
| Sound Waters Stamford | 3 | $145,078 |
| The Denison Pequotsepos Nature Center Mystic | 3 | $6,714 |
| Avalonia Land Conservancy Inc Old Mystic | 3 | $4,747 |
| Connecticut Audubon Society Fairfield | 3 | $3,727 |
| Save the Sound New Haven | 3 | $3,089 |
| Keep America Beautiful Inc Stamford | 2 | $3,000,098 |
| Keep Stamford Beautiful Inc Stamford | 2 | $200,000 |
| Aspetuck Land Trust Inc Fairfield | 2 | $150,504 |
How to use this list
A foundation is listed because its own latest tax return itemizes grants to organizations in Connecticut that we classify as environment, by the purpose the foundation wrote or by the recipient's IRS activity code. Their typical grant is the middle of the funders' own typical grants across everything they fund. Start with funders whose typical grant is close to what you need and whose past recipients look like your organization, then open the profile for all of its grants and any application instructions.
Of these 542 foundations, 127 describe how to apply on their latest return; many others give only to organizations they already know. A badge such as Gave $1.2M in 2024 repeats what the latest return reports; it does not mean the foundation is accepting proposals now.
Facts on this page come from the foundation's own IRS Form 990-PF filings as published by the IRS. Grantvello does not know whether a foundation is accepting proposals right now: a past grant is not an open opportunity. Always confirm current guidelines with the funder before applying.