Gigascale 2026: Schroepfer Closes $250M Climate Fund as Sector Splits
Mike Schroepfer's Gigascale Capital closed a $250 million debut institutional fund on June 1, doubling down on climate tech as U.S. clean-energy investment contracts for a second straight quarter. The raise lands as carbon removal posts a record Q1 and capital concentrates among proven players.
Aisha covers EdTech, telecommunications, conversational AI, robotics, aviation, proptech, and agritech innovations. Experienced technology correspondent focused on emerging tech applications.
LONDON, Saturday, June 6, 2026 — Gigascale Capital, the venture firm founded by former Meta chief technology officer Mike Schroepfer, closed its first institutional fund at $250 million on June 1, betting against a souring market consensus on climate tech. The fund will deploy into energy, grid infrastructure, and critical minerals through a climate lens. Gigascale is the first institutional vehicle for a firm that previously ran on Schroepfer's family-office capital. The raise lands in the same week U.S. clean-tech investment posted a sixth straight quarterly decline and durable carbon removal logged its largest Q1 on record.
Key Takeaways
- Gigascale closed a $250M institutional fund on June 1 — its first outside-LP vehicle since launching in 2023.
- The fund targets energy, grid infrastructure and critical minerals through a climate-tech lens, bucking conventional wisdom that has soured on the thesis.
- U.S. clean-tech investments fell for a sixth consecutive quarter to $8 billion in Q1 2026, down 34% year-over-year.
- Durable carbon removal posted 2.3 million tonnes contracted in Q1 2026 — roughly 560% of Q1 2025 volume — led by a 1-million-tonne Microsoft deal.
- Net Zero Insights tracked 199 funding rounds and 12 new climate funds in the two weeks ending June 2, spanning clean energy, grid, AI infrastructure and maritime tech.
Context & Analysis
The Gigascale close is the cleanest signal yet of a structural split inside climate tech. The firm was co-founded in 2023 by Schroepfer, who helped drive Meta's data-center buildout as CTO, and is now backing clean-tech startups supporting the artificial intelligence boom. The pitch is not abatement for its own sake. Gigascale's thesis frames rapid electrification, industrial reshoring, AI deployment and extreme weather as exposing the limits of physical systems built for a different era, and concentrates on clean energy and grid infrastructure, the supply chains supporting them, and AI applied to physical design and deployment.
That framing matters because the macro tape is ugly. American investment in low-carbon energy and transportation fell for a second consecutive quarter, ending an unbroken growth trend stretching back to 2019, with Q1 2026 totaling $61 billion — down 3% sequentially and 9% year-over-year, according to a Rhodium Group analysis. Battery manufacturing investment plunged 47% year-over-year after federal EV tax credits were eliminated. Yet capital is still flowing — just into different hands.
| Company | Position | Recent Move | Source |
|---|---|---|---|
| Gigascale Capital | Early-stage climate VC | Closed $250M debut institutional fund June 1 | Bloomberg |
| Microsoft | Largest CDR buyer | 1M-tonne biochar deal with Liferaft in Q1 | CDR.fyi |
| Big Nature Impact Fund (UK) | Nature-based fund | £65M first close late May 2026 | Net Zero Insights |
| Transition Ventures | Energy-transition VC | $150M Fund II for AI infra and power | Net Zero Insights |
| Convective Capital | Climate adaptation VC | $85M disaster-tech fund close | Net Zero Insights |
Related: Where Carbon Removal Dollars Actually Flow in 2026, per BCG
Competitive Landscape
Gigascale's portfolio reads like a roster of the deep-tech bets institutional climate LPs are now willing to underwrite. The firm has backed Commonwealth Fusion Systems, Heron Power, Mill and Form Energy. Drew Baglino, Tesla's former SVP of Powertrain and Energy, runs portfolio company Heron Power; Radiant is advancing toward one of the first commercial deployments of nuclear microreactor technology in the U.S.; Xcimer Energy achieved first light on its commercial fusion laser system in late 2025; Arbor Energy signed an agreement with GridMarket for up to 5 GW of zero-emission baseload power for data centers; and Fractile announced a $136 million expansion of AI processor production.
Related: Investors Reprice Climate Tech: Late-Q4 Deals Tighten Valuation Bands Across Key Segments The implementation approach emphasizes earning HIPAA compliance certification for healthcare applications,
The competitive frame is widening. Palo Alto-based Gigascale closed its first institutional fund at $250M to back early-stage companies developing clean energy, grid infrastructure, advanced manufacturing, and physical AI technologies. Nairobi-based AHL Venture Partners hit a $30.5M first close on AHL Africa Credit Fund I, London-based Transition Ventures closed a $150M second fund for AI infrastructure and power systems, the UK Big Nature Impact Fund secured £64.6M for biodiversity and peatland restoration, and San Francisco-based Convective Capital closed an $85M fund for disaster monitoring and recovery technologies. Sightline Climate data shows investors raised a record $92 billion in new climate-focused capital across 179 funds last year, but 77% of that total was concentrated among the largest players — institutional heavyweights like Brookfield, Copenhagen Infrastructure Partners, and Energy Capital Partners.
| Company | Category | Key Development | Impact |
|---|---|---|---|
| Heron Power | Industrial power electronics | Led by ex-Tesla SVP Drew Baglino | Grid hardware for AI loads |
| Radiant | Nuclear microreactors | Tracking first U.S. commercial deployment | Data-center baseload |
| Arbor Energy | Baseload zero-emission power | 5 GW supply agreement with GridMarket | Direct AI-infra offtake |
| Dioxycle | Carbon utilization | Multi-year L'Oréal deal for ethylene from CO2 | Industrial offtake validation |
| Liferaft | Biochar carbon removal | 1M-tonne Microsoft offtake in Q1 2026 | Resets CDR price benchmark |
For deeper context, see our related analysis: "Investors Reprice Climate Tech: Late-Q4 Deals Tighten Valuation Bands Across Key Segments".
For deeper context, see our Climate Tech analysis: "Where Carbon Removal Dollars Actually Flow in 2026, per BCG".
What It Means
For Enterprise Buyers
The demand side of climate tech is consolidating around hyperscaler procurement. Microsoft accounted for 43% of Q1 contracted CDR volume, while software buyers, CDR intermediaries, and financial services led sector demand — strong headline volume but continued dependence on a small number of large buyers. Enterprise procurement teams chasing high-integrity removal credits should expect tightening supply of biochar tonnes at sub-megaton scale and rising intermediary spreads. Dioxycle entered a multi-year agreement with L'Oréal to convert captured carbon emissions into ethylene for packaging materials — a template for industrial offtake that bypasses voluntary-market price volatility.
For Investors
Schroepfer's fund is a bet that climate returns now ride on the AI capex cycle, not on policy tailwinds. "Cost curves bend, markets scale, and a better alternative makes the old way obsolete," Schroepfer said, citing solar's move from 40 GW a year to 600 GW in a decade and arguing the companies Gigascale backs "win because they're cheaper, faster, and more reliable." The implication for LPs: late-stage infrastructure-style climate funds still raise easily; early-stage deep tech needs a thematic wrapper — "physical economy," "AI infrastructure" — to clear LP screens.
Additional coverage: European Climate Tech Startups Secure €8.2B Despite Investor Pullback 2026
Additional coverage: Climate Tech Market Trends: Investment, Deployment, and Corporate Demand in 2025
Forward Outlook
Watch three milestones over the next 90 days. First, Gigascale's named LPs — the firm did not immediately name its outside institutions and organizations — will surface in regulatory filings and signal which pension funds and sovereigns are returning to climate. Second, CDR.fyi's Q2 2026 update will test whether non-Microsoft demand can sustain the broadening trend. Third, Q2 Rhodium data, due in August, will show whether the U.S. clean-tech investment slide extended a seventh quarter — or bottomed.
Related: Heat Pumps, Grids, And DAC Rewire Hiring as EU, DOE, Microsoft Trigger Q4 Climate Tech Upskilling
Related: Climate Tech Innovation Hits an Inflection Point as Capital Chases Scale
Additional coverage: European Climate Tech Startups Secure €8.2B Despite Investor Pullback 2026
For deeper context, see our related analysis: "Climate Tech Sector Brief 2026: Adoption Advances and Costs Decline".
Sources include company disclosures, regulatory filings, analyst reports, and industry briefings.
Related Coverage
About the Author
Aisha Mohammed
Technology & Telecom Correspondent
Aisha covers EdTech, telecommunications, conversational AI, robotics, aviation, proptech, and agritech innovations. Experienced technology correspondent focused on emerging tech applications.
Frequently Asked Questions
What did Gigascale Capital announce on June 1, 2026?
Gigascale Capital, founded by former Meta CTO Mike Schroepfer, closed its first institutional fund at $250 million to back early-stage companies in clean energy, grid infrastructure, advanced manufacturing, and physical AI. It is Gigascale's first vehicle backed by outside institutions rather than Schroepfer's family office.
How does the Gigascale raise compare to broader climate tech funding trends?
It runs counter to the macro trend. Rhodium Group data shows U.S. low-carbon energy and transportation investment fell to $61 billion in Q1 2026 — a 9% year-over-year decline — and clean-tech investment specifically dropped 34% year-over-year. Capital is concentrating among proven players and infrastructure funds, with 77% of 2025 climate fund commitments going to the largest LPs.
What is happening in the durable carbon removal market?
CDR.fyi reported Q1 2026 as the largest opening quarter on record with 2.3 million tonnes contracted, roughly 560% of Q1 2025 volume. Microsoft alone accounted for 43% via a 1-million-tonne biochar deal with new supplier Liferaft. Biochar carbon removal made up 93% of Q1 contracted volume.
Which companies are in Gigascale's portfolio?
The firm has backed more than 25 companies including Commonwealth Fusion Systems, Heron Power (led by ex-Tesla SVP Drew Baglino), Radiant (nuclear microreactors), Xcimer Energy (laser fusion), Arbor Energy (zero-emission baseload), Form Energy, Dioxycle (carbon utilization, with an L'Oréal offtake), Fractile (AI chips), and Mill (food waste tech).
What should enterprise buyers and investors watch next?
Three near-term signals: the disclosure of Gigascale's outside institutional LPs, CDR.fyi's Q2 2026 update on whether non-Microsoft demand keeps broadening, and the next Rhodium Group quarterly report due in August to confirm whether the U.S. clean-tech investment decline has bottomed.
