Connecticut · Grantmakers

Foundations That Fund Environment & Conservation in Connecticut

Imperigo has identified 166 funders that made 1,532 grants totaling $72.2M to 178 environment & conservation organizations in Connecticut, with a median grant of $16K. Every figure below is drawn from IRS Form 990 filings through 2025.

Environment & Conservation Funding in Connecticut

Total granted $72.2M
Funders 166
Grants 1,532
Organizations funded 178

Top Funders — page 4 of 4

104. Northeast Wilderness Trust CorporationRegrantor
2 grants to 2 organizations · largest $180K · through 2024 · 37.3% of their giving
$310K
105. Connecticut Land Conservation Council IncRegrantor
16 grants to 15 organizations · largest $24K · through 2024 · 73.4% of their giving
$192K
106. The Humane Society Wildlife Land TrustRegrantor
2 grants to 2 organizations · largest $185K · through 2024 · 12.5% of their giving
$285K
107. Hartford HospitalRegrantor
1 grant to 1 organization · largest $300K · through 2019 · 8.5% of their giving
$300K
108. Climate Jobs National Resource Center IncRegrantor
4 grants to 1 organization · largest $200K · through 2024 · 4.5% of their giving
$555K
109. National Marine Sanctuary FoundationRegrantor
3 grants to 1 organization · largest $349K · through 2022 · 2.9% of their giving
$648K
110. Natural Resources Defense Council IncRegrantor
4 grants to 3 organizations · largest $400K · through 2024 · 1.4% of their giving
$831K
111. Sustainable Ct IncRegrantor
16 grants to 11 organizations · largest $9K · through 2024 · 9.3% of their giving
$123K
112. Guilford Land Conservation Trust IncRegrantor
1 grant to 1 organization · largest $57K · through 2022 · 100.0% of their giving
$57K
113. Kent Land Trust Foundation IncRegrantor
1 grant to 1 organization · largest $51K · through 2019 · 100.0% of their giving
$51K
114. Renew New England AllianceRegrantor
2 grants to 1 organization · largest $75K · through 2022 · 10.7% of their giving
$95K
115. The Prosperity Foundation IncRegrantor
4 grants to 2 organizations · largest $150K · through 2024 · 5.8% of their giving
$171K
116. American Council On Renewable EnergyRegrantor
3 grants to 1 organization · largest $50K · through 2024 · 5.8% of their giving
$150K
117. The Sunrise Project IncRegrantor
3 grants to 2 organizations · largest $320K · through 2024 · 1.6% of their giving
$540K
118. Environmental League of Massachusetts IncRegrantor
4 grants to 1 organization · largest $20K · through 2023 · 8.4% of their giving
$45K
119. FJCRegrantor
38 grants to 8 organizations · largest $58K · through 2024
$716K
120. Sasquanaug Association for Southport Improvement IncRegrantor
1 grant to 1 organization · largest $10K · through 2024 · 100.0% of their giving
$10K
121. Art Council of Greater New Haven IncRegrantor
2 grants to 2 organizations · largest $10K · through 2021 · 9.5% of their giving
$20K
122. Altasea at the Port of Los AngelesRegrantor
1 grant to 1 organization · largest $50K · through 2019 · 3.6% of their giving
$50K
123. Community Helpers USA IncRegrantor
2 grants to 1 organization · largest $19K · through 2024 · 7.1% of their giving
$25K
124. The Nature ConservancyRegrantor
16 grants to 10 organizations · largest $130K · through 2024
$797K
125. New Haven Farms IncRegrantor
1 grant to 1 organization · largest $6K · through 2019 · 100.0% of their giving
$6K
126. Point32health Foundation IncRegrantor
5 grants to 2 organizations · largest $66K · through 2024
$175K
127. Jewish Foundation of Greater New Haven IncRegrantor
2 grants to 2 organizations · largest $56K · through 2024
$66K
128. Windward FundRegrantor
4 grants to 2 organizations · largest $300K · through 2024
$465K

Funders are ordered by how much of their overall giving goes to environment & conservation work in Connecticut, 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. 13 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 Connecticut

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 Connecticut. 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 Connecticut, not every dollar that reached the sector. Figures are a floor, not a ceiling.

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Research Connecticut funders in depth

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