Inevitable
Inevitable

Ep 5: Sarah Kearney, Founder & Executive Director of Prime Coalition

In this episode, I interview Sarah Kearney, founder and executive director of Prime Coalition. Sarah founded Prime Coalition in 2014 to build a tribe of courageous philanthropists that believe market-driven technology innovation and deployment is critical to our fight against climate change. We cove

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Episode Summary

Executive Summary: Sarah Kearney explains how Prime Coalition uses philanthropic/catalytic capital to bridge early climate technologies from high-risk innovation to market-ready solutions. The conversation covers blended finance, recoverable grants, PRI mechanics, donor-advised funds, and Prime’s broader goal of creating a replicable model for mission-driven investment beyond climate while staying focused on climate mitigation.

Main Topics: Prime Coalition’s mission and theory of change (Priority: 5/5): Prime exists to reduce the biophysical and social consequences of climate change by deploying philanthropic capital into market-based solutions that would otherwise struggle to raise funding. Catalytic capital and additionality (Priority: 5/5): Kearney defines Prime’s role as using charitable dollars where traditional capital cannot go because of longer timelines, disproportionate risk, or lower financial returns; the key test is whether the capital is genuinely additional. Blended finance and capital stacking (Priority: 4/5): She describes a vision in which philanthropic, catalytic, and market-rate capital are layered into a single vehicle, with each tranche taking on different risk/return profiles and improving outcomes for all participants. Prime’s vehicles: PRI, recoverable grants, and the Prime Impact Fund (Priority: 5/5): The transcript details how Prime worked first deal-by-deal with foundations and donor-advised funds, then launched a 100% philanthropic seed fund using grants, PRIs, recoverable grants, and mission-related investments. How Prime evaluates and supports companies (Priority: 5/5): Prime seeks companies with gigaton-scale emissions reduction potential, evidence that market-rate investors will join once milestones are hit, and clear evidence that the company would struggle to raise money without Prime. Climate philanthropy ecosystem and mobilization (Priority: 4/5): Kearney argues the climate funder base remains too small despite broad concern about climate change, and says Prime’s success includes bringing in first-time climate and first-time philanthropic investors. Focus on climate, but a replicable model for other sectors (Priority: 3/5): Prime will remain mission-locked on climate, but Kearney wants the investment framework, legal structures, and lessons learned to help other cause areas that face similar capital gaps.

Key Arguments: Philanthropic capital has unique value when it solves problems that market capital cannot, especially due to timing, risk, or return constraints. Additionality is the core criterion: Prime should only invest where its capital materially changes outcomes and helps companies reach a milestone that unlocks follow-on funding. Blended finance can make both philanthropic and market-rate capital more effective by combining tranches with different risk and return expectations. Recoverable grants and PRIs allow charitable dollars to be redeployed after success, increasing the long-term impact of the original philanthropic capital. Prime’s role is not to subsidize “charity cases,” but to help the best climate technologies bridge the gap to commercial scale. Climate work needs both innovation and deployment; treating them as opposing camps is a false choice because they function as feedback loops across the value chain. The right starting point for individuals is to identify their own assets—time, expertise, grant dollars, investment dollars, influence—and apply them where they are most useful. A relatively small amount of philanthropic capital can potentially unlock far larger pools of private capital if it is deployed surgically and strategically.

Data Points: Prime Impact Fund size: $20 million to $40 million - Kearney describes the fund as a 100% philanthropic seed vehicle. Foundation payout requirement: 5% - She notes private foundations must distribute 5% of assets annually, and PRIs can count toward that obligation. Prime partners/participants: 90-some parties - Total number of parties that have participated in Prime transactions. First-time climate or philanthropy investors: At least 40 - Of the parties participating in Prime transactions, at least 40 had never done anything in climate before. Traditional grant share of Prime Impact Fund: About 25% of dollars - Kearney says roughly a quarter of the fund by dollar value came in as traditional grants. Traditional grant share of Prime Impact Fund by count: About 10% - Traditional grants made up about 10% of participating organizations. QuidNet seed one support: 100% of seed one tranche - Prime fully funded the first pilot test for QuidNet Energy. QuidNet seed two support: 50% of round - Prime and Clean Energy Venture Group each supplied half of the second seed round. QuidNet seed three composition: 80% market rate / 20% catalytic - Later round that helped recruit a CEO. QuidNet pilot tests: 47 more pilot tests - Funded after the successful initial pilot. Beyond Meat early support via Impact Assets: Around $1 million to $30 million - Example cited to show potential upside in donor-advised fund impact investing; the original investment reportedly grew to $30 million after IPO. Impact Assets assets under management: Over $700 million - Used as an example of the category’s growth and redeployment power. U.S. private foundations: 86,000 - Kearney cites the number of foundations as a scale reference. Potential foundation commitment target: 5% to 10% - She says if even this share of foundations were substantively committed to climate, it would be very meaningful.

Pivotal Quotes: "the type of capital that we're talking about, the real unique value proposition of it is that it seeks to achieve additionality" — Sarah Kearney: She defines catalytic/philanthropic capital and why Prime uses it. "I don't wake up every day wanting to make a concession. I'm like, I wake up every day wanting to change the world." — Jesse Fink (quoted by Sarah Kearney): Used to explain why Prime prefers a more positive taxonomy than “concessionary investing.” "our ultimate end goal is climate impact" — Sarah Kearney: She explains why it is a win if a company can raise follow-on money without Prime.

Implications: Prime’s model suggests philanthropic capital can be a powerful bridge for climate innovation, especially for high-risk early technologies. If replicated, it could unlock more private capital, mobilize new donors, and create reusable structures for other social-impact sectors.

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