Female-Led VitaminºC Closes €18M Debut Climate Fund to Invest Where Science Meets Scale
TL;DR
VitaminºC, a new female-led venture capital firm based in Zurich and San Francisco, has hit an €18 million ($20 million) first close on its debut climate fund. Co-founded by Nathalie Moral and Sophie Lamparter, the fund targets pre-seed and seed investments of €500K to €1.5 million in climate mitigation and adaptation technologies across energy, agriculture, carbon removal, and resilience. Backed by European entrepreneurial families and supported by a network of climate-tech founders and academic institutions, VitaminºC is launching at a contrarian moment when climate-tech funding has declined, precisely the kind of timing that historically produces the best vintage years.
Key Takeaways
Launching a climate fund during a climate-funding downturn is the right contrarian move. Global climate-tech venture funding has declined from its 2021-2022 peaks as generalist VCs retreated from the category. VitaminºC is entering the market when competition for deals is lower, valuations are more rational, and the companies that are fundraising have been stress-tested by the downturn. The best-performing vintages in venture capital consistently come from periods of reduced capital supply, and climate tech in 2026 fits that pattern perfectly.
The transatlantic Zurich-San Francisco model bridges two critical ecosystems. Europe leads in climate policy, regulation, and academic research. The US leads in commercialization, scaling, and growth capital. VitaminºC's dual-headquarters structure allows it to source European deep-science companies and help them access US markets, or back US climate founders seeking European regulatory tailwinds and early adopters. This is the same transatlantic arbitrage that has worked for firms like EQT Ventures and Index Ventures, applied to climate tech.
The science-validation model is a genuine differentiator. VitaminºC actively connects portfolio companies with academic institutions for rigorous impact validation, funds non-dilutive grants to generate scientific evidence, and pilots blended capital models combining venture and philanthropy. In climate tech, where buyer skepticism is high and greenwashing accusations abound, having third-party scientific validation of your technology's impact is a sales accelerant, not just an ESG checkbox. This approach should help portfolio companies convert pilots to contracts faster.
€500K-€1.5M check sizes target the most capital-starved part of climate tech. Climate pre-seed and seed is where the funding gap is most acute. Deep-tech climate companies need patient capital to move from lab to prototype, and most generalist seed funds lack the technical diligence capability to evaluate hard science. VitaminºC's focused mandate means it can build the domain expertise and scientific advisory network needed to make intelligent bets at this stage, where returns are highest but diligence requirements are most demanding.
Why This Fund Matters
The climate-tech funding landscape has bifurcated into two extremes: mega-funds deploying hundreds of millions into growth-stage clean energy and EV infrastructure, and a desert of capital at the pre-seed and seed stage where breakthrough science needs its first institutional check. VitaminºC sits squarely in that desert, providing the kind of early, patient, science-literate capital that climate founders struggle to find.
The fund's emphasis on measurable impact is not just an LP marketing strategy, it is a competitive moat. Climate-tech buyers, whether corporations meeting Scope 3 requirements or governments implementing the Paris Agreement, increasingly demand rigorous, third-party-validated evidence of emissions reduction or resilience improvement. Companies that can demonstrate validated impact at the seed stage are more likely to win their first enterprise contracts, which is the single biggest predictor of success for climate startups.
The timing coincides with a wave of European climate policy implementation, including the EU Carbon Border Adjustment Mechanism, the Net Zero Industry Act, and national climate adaptation plans, all of which create procurement demand for exactly the technologies VitaminºC's portfolio companies will build. Early-stage climate companies funded now will hit commercial readiness just as these policy-driven demand signals intensify.
The Team
Nathalie Moral and Sophie Lamparter co-founded VitaminºC with complementary experience across venture capital, deep-tech scaling, and international market expansion. While their individual backgrounds are not extensively detailed in public reporting, the combination of scientific advisory relationships and transatlantic operational capability suggests a team that has deliberately built the infrastructure needed to diligence and support hard-science climate companies across both European and American markets.
The advisory network includes Jasmine Kent, CTO and co-founder of Dufour Aerospace and Daedalean (exited), providing deep-tech operational perspective, and Florian Egli, a climate policy expert affiliated with TUM Munich and the EU Environment Agency Committee, adding regulatory and policy expertise that is critical for climate-tech companies navigating the European policy landscape.
What This Means for Founders
If you are building a climate-tech company at the pre-seed or seed stage, particularly in energy systems, agricultural technology, carbon removal, or climate resilience, VitaminºC offers a differentiated value proposition. The €500K-€1.5M check sizes are right-sized for early climate companies, the science-validation model helps you build credibility with enterprise buyers before you have revenue, and the Zurich-San Francisco positioning gives you access to both European regulatory tailwinds and US market opportunities.
Founders should particularly value the blended capital approach, where VitaminºC combines venture investment with non-dilutive grant funding to generate scientific evidence. For capital-intensive climate companies where every dollar of dilution matters, this model preserves equity while building the evidence base needed to raise larger follow-on rounds. If your technology needs scientific validation to unlock commercial traction, this fund is built specifically for your stage and your challenge.
Fund Momentum Take
VitaminºC is a small fund with a smart thesis at the right time. The climate-tech downturn has created a buyers' market at the seed stage, European climate policy is creating real procurement demand, and the gap in science-literate pre-seed capital is well-documented. The €18 million fund size is modest, but at €500K-€1.5M check sizes, it supports 12-20 investments, which is a concentrated enough portfolio to generate meaningful returns from a few breakout winners.
The risk is the classic emerging-manager challenge: building brand recognition, deal flow, and follow-on relationships from a standing start. Climate-tech founders have increasingly good options at the seed stage from established funds like Lowercarbon Capital, Breakthrough Energy Ventures, and Pale Blue Dot, and VitaminºC will need to articulate what it offers that these larger, more established brands do not. The science-validation model and blended capital approach are good answers, but they need to be proven in practice.
Our bet: VitaminºC's contrarian timing and focused mandate will produce a strong debut vintage. The fund fills a genuine gap in the market, the team has assembled the right advisory infrastructure, and the transatlantic model creates strategic optionality for portfolio companies. Small climate funds with strong vintage timing have historically punched well above their weight in returns.
Frequently Asked Questions
What is VitaminºC?
VitaminºC is a female-led venture capital firm based in Zurich and San Francisco, focused exclusively on early-stage climate mitigation and adaptation technologies.
How big is the VitaminºC debut fund?
The fund achieved an €18 million ($20 million) first close in March 2026, targeting pre-seed and seed investments of €500K to €1.5M per company.
Who founded VitaminºC?
The firm was co-founded by Nathalie Moral and Sophie Lamparter, bringing complementary experience in venture capital, deep-tech scaling, and international market expansion.
What sectors does VitaminºC invest in?
The fund targets climate technologies across energy, agriculture, carbon removal, and resilience, with a focus on solutions delivering measurable emissions reduction or improved climate resilience.
What makes VitaminºC different from other climate funds?
The fund combines venture investment with science-validation through academic partnerships and non-dilutive grant funding, plus a blended capital model that pairs venture and philanthropic capital to accelerate portfolio companies.
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