Clasp
Funding Overview
From IRS Form 990 filings · 2019–2025
Total received
$52.7M
Foundation funders
20
Grants recorded
64
Years covered
2019–2025
Who funds Clasp?
Clasp is funded by 20 grantmakers, led by Aspen Global Change Institute Inc ($15.9M), Sequoia Climate Foundation ($13.3M), Climate Imperative Foundation ($7.3M). In total, IRS Form 990 filings record $52.7M in grants to Clasp between 2019–2025.
| Funder | Total given | Grants | Years |
|---|---|---|---|
| Aspen Global Change Institute Inc | $15,918,203 | 5 | 2020–2024 |
| Sequoia Climate Foundation | $13,250,000 | 10 | 2021–2024 |
| Climate Imperative Foundation | $7,325,000 | 4 | 2020–2024 |
| RF Catalytic Capital Inc | $6,500,000 | 2 | 2022–2023 |
| Climateworks Foundation | $4,534,845 | 5 | 2020–2024 |
| Wellspring Philanthropic Fund Inc | $2,000,000 | 1 | 2020 |
| John D and Catherine T Macarthur Foundation | $1,900,000 | 5 | 2020–2024 |
| Combined Jewish Philanthropies of Greater Boston Inc | $820,000 | 2 | 2019–2020 |
| International Sustainable Energy Foundation | $132,000 | 1 | 2024 |
| United States Energy Foundation | $125,000 | 3 | 2021–2024 |
| Sixteen Thirty Fund | $50,000 | 1 | 2022 |
| The William & Flora Hewlett Foundation | $50,000 | 1 | 2021 |
| Ontario Community Foundation | $36,000 | 6 | 2020–2025 |
| Energy Action Fund | $25,000 | 1 | 2022 |
| The R C Durr Foundation Inc | $18,000 | 5 | 2020–2024 |
| Louis N Cassett Foundation | $17,000 | 1 | 2020 |
| Dunn Family Charitable Foundation | $9,500 | 3 | 2022–2024 |
| Pat & Mark Warren Family Foundation | $4,000 | 4 | 2020–2025 |
| Damman Family Foundation Trust | $4,000 | 3 | 2020–2024 |
| Peale Foundation Inc | $1,000 | 1 | 2019 |
Funding over time
Grant dollars and counts received per year
From 2019 to 2025, annual grant giving ranged from $6K (2025) to $16.3M (2022). In 2025 it made 2 grants totaling $6K.
What grants has Clasp received?
Individual grants from IRS Form 990 filings, newest first
| Year | Funder | Purpose | Amount |
|---|---|---|---|
| 2025 | Ontario Community Foundation | Tutor et al | $5,000 |
| 2025 | Pat & Mark Warren Family Foundation | CUSD AFTER SCHOOL TUTORING, ASSISTAN | $1,000 |
| 2024 | Sequoia Climate Foundation | TO PROVIDE TECHNICAL ASSISTANCE SUPPORT IN THE DEVELOPMENT OF ENERGY EFFICIENCY STANDARDS | $4,250,000 |
| 2024 | Aspen Global Change Institute Inc | CRUX PROJECT | $3,817,499 |
| 2024 | Climateworks Foundation | TO EXPAND ACCESS TO SUSTAINABLE COOLING AND REDUCE GREENHOUSE GAS EMISSIONS | $1,705,659 |
| 2024 | Climate Imperative Foundation | ENVIRONMENTAL PROTECTION | $750,000 |
| 2024 | Sequoia Climate Foundation | TO PROVIDE TECHNICAL ASSISTANCE IN SUPPORT OF ENERGY EFFICIENCY TO FOSTER PUBLIC HEALTH | $400,000 |
| 2024 | John D and Catherine T Macarthur Foundation | TO BUILD STATE-LEVEL IMPLEMENTATION CAPABILITIES THAT ACCELERATE EQUITABLE ACCESS TO CLEAN ENERGY TECHNOLOGIES IN INDIA | $250,000 |
| 2024 | International Sustainable Energy Foundation | Grants were provided and expenses were incurred for Green Governance (Policy), Public Diplomacy & Legal to support projects that focus on Governmental/Provincial Sustainability Policies and how best to implement those policies and encourage collaborative effort across various stakeholders such as government offices and affected industrial contacts in India. | $132,000 |
| 2024 | United States Energy Foundation | TO PROMOTE EDUCATION AND ANALYSIS TO ADVANCE ENERGY OPTIMIZATION. | $25,000 |
| 2024 | Ontario Community Foundation | Materials for Online, etc. | $5,000 |
| 2024 | The R C Durr Foundation Inc | GENERAL SUPPORT | $4,000 |
| 2024 | Dunn Family Charitable Foundation | UNRESTRICTED GIFT | $3,500 |
| 2024 | Damman Family Foundation Trust | UNRESTRICTED CONTRIBUTION | $1,000 |
| 2023 | RF Catalytic Capital Inc | IMPROVE ENERGY EFFICIENT APPLIANCE AFFORDABILITY | $2,000,000 |
| 2023 | Sequoia Climate Foundation | TO ADVANCE APPLIANCE EFFICIENCY MEASURES | $1,625,000 |
| 2023 | Climateworks Foundation | PROJECT SUPPORT | $1,103,889 |
| 2023 | Sequoia Climate Foundation | TO ADVANCE FEDERAL APPLIANCE EFFICIENCY STANDARDS | $1,000,000 |
| 2023 | Aspen Global Change Institute Inc | CRUX PROJECT | $864,001 |
| 2023 | Sequoia Climate Foundation | TO ACCELERATE TECHNICAL ASSISTANCE IN SUPPORT OF ENERGY EFFICIENCY | $400,000 |
| 2023 | John D and Catherine T Macarthur Foundation | to build state-level implementation capabilities that accelerate equitable access to clean energy technologies in India | $250,000 |
| 2023 | Ontario Community Foundation | Materials for Online, etc. | $5,000 |
| 2023 | The R C Durr Foundation Inc | GENERAL SUPPORT | $4,000 |
| 2023 | Dunn Family Charitable Foundation | UNRESTRICTED GIFT | $3,000 |
| 2023 | Pat & Mark Warren Family Foundation | PROVIDING AFTER SCHOOL TUTORING | $1,000 |
| 2022 | RF Catalytic Capital Inc | IMPROVE ENERGY EFFICIENT APPLIANCE AFFORDABILITY | $4,500,000 |
| 2022 | Aspen Global Change Institute Inc | CRUX PROJECT | $4,184,703 |
| 2022 | Climate Imperative Foundation | TO SUPPORT RESEARCH, EDUCATION, AND OUTREACH ABOUT CLEAN LIGHTING | $3,000,000 |
| 2022 | Sequoia Climate Foundation | TO ADVANCE APPLIANCE EFFICIENCY MEASURES | $1,625,000 |
| 2022 | Sequoia Climate Foundation | TO ADVANCE FEDERAL APPLIANCE EFFICIENCY STANDARDS | $1,000,000 |
Showing 30 most recent of 64 recorded grants.
Frequently Asked Questions
Who funds Clasp?
Clasp is funded by 20 grantmakers, led by Aspen Global Change Institute Inc ($15.9M), Sequoia Climate Foundation ($13.3M), Climate Imperative Foundation ($7.3M). In total, IRS Form 990 filings record $52.7M in grants to Clasp between 2019–2025.
Who is Clasp's largest funder?
Aspen Global Change Institute Inc is the largest recorded funder of Clasp, with $15.9M across 5 grants (2020–2024).
How much grant funding has Clasp received?
IRS 990 filings record $52.7M in grants to Clasp across 64 grants from 20 funders between 2019–2025. Filings are published on a delay, so recent grants may not appear yet.
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Grant data is drawn from IRS Form 990 filings via Grantable's GrantGraph™. Filings are published on a delay; recent grants may not appear yet.
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