If you’re raising in climate tech right now, the environment is tougher than it was a few years ago. There are fewer new funds, and outside of sectors riding the energy-and-AI wave, deployment is cautious — even for companies doing everything right.
Fortunately, many climate technologies have broad appeal. Take a critical minerals tech startup. To a climate fund, that’s energy-transition infrastructure. To a deep-tech fund, it’s advanced materials and chemical engineering. To a defense fund, it’s supply chain independence from China. Same company, same mission, three different pools of capital. Climate-focused founders need to embrace all three.
We’ve compiled a list of investors that announced or closed new funds over the past year, broken into three segments. This first post covers the core climate and energy specialists. Part two will cover the broader deep-tech and multi-sector physical-industry investors, and part three will focus on defense, space, and American onshoring funds.
Congruent Ventures
Raised: $275M — Fund III (Nov ’25)
Typically first invests at: Pre-seed–Series A
Focus: broad climate tech: energy, grid, insurance, mobility, food, construction
Leads vs participates: Frequent Lead
Recent investments:
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- Cloneable — AI for utilities, ag & infrastructure, Seed, Apr ’26, $4.6M (lead)
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- Ezra — AI for project finance, Seed, Mar ’26, $8M (lead)
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- Zeno — electric motorbikes, Series A, Mar ’26, $25M (co-lead)
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- Terranova — flood-control robotics, Seed, Nov ’25, $7M (co-lead)
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- GridStrong — grid compliance software, Seed, Sep ’25, $10M (lead)
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- Adaptive Insurance — parametric climate insurance, Seed, Feb ’25, $5M (lead)
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- STOR — food preservation tech, Seed, Dec ’24, $4M
Voyager Ventures
Raised: $275M — Fund II (Jan ’26)
Typically first invests at: Pre-seed–Series A
Focus: energy, materials, mobility, built environment, carbon, climate software & AI
Leads vs participates: Frequent Lead
Recent investments:
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- tem — AI electricity-market software, Series B, Feb ’26, $75M
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- Allie AI — AI factory intelligence, Seed, Nov ’25, $5M (lead)
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- Arbor Energy — carbon-negative gas turbines, Series A, Oct ’25, $55M (co-lead)
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- Electroflow Technologies — low-cost LFP material, Seed, Oct ’25, $10M (co-lead)
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- Photara — silver-free solar metallization, Seed, Aug ’25, $8M (co-lead)
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- Leeta Materials — advanced ceramic materials, Seed, Jul ’25, $6M (lead)
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- Astro Mechanica — supersonic jet engines, Series A, Apr ’25, $27M
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- Enapi — EV-charging connectivity platform, Seed, Jan ’25, $8M (lead)
Gigascale Capital
Raised: $250M — Fund I (Jun ’26)
Typically first invests at: Pre-seed–Series A
Focus: clean energy, grid infrastructure, nuclear & fusion, critical minerals, physical AI
Leads vs participates: Occasional Lead
Recent investments:
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- Fractile — AI inference chips, Series B, May ’26, $220M
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- Vor Systems — renewable-energy deal AI, Pre-seed, Mar ’26, $3M (lead)
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- Arbor Energy — carbon-negative gas turbines, Series A, Oct ’25, $55M
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- Commonwealth Fusion Systems — tokamak fusion power, Series B2, Aug ’25, $863M
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- Terraton — biochar carbon removal, Seed, Aug ’25, $12M (co-lead)
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- Heron Power — solid-state grid transformers, Series A, May ’25, $38M
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- Radiant — portable nuclear microreactors, Series C, May ’25, $165M
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- Terradot — enhanced rock weathering, Series A, Dec ’24, $58M
VoLo Earth Ventures
Raised: $135M — Fund II (Sep ’25)
Typically first invests at: Pre-seed–Series A
Focus: climate tech: energy, built environment, materials, housing
Leads vs participates: Frequent Lead
Recent investments:
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- Texture — grid data platform, Series A, May ’26, $12.5M (co-lead)
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- Refiant AI — AI model compression, Seed, Apr ’26, $5M (lead)
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- Reframe Systems — robotic prefab housing, Series A, Aug ’25, $20M (co-lead)
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- Cambium Carbon — mass timber logistics, Series A, Feb ’25, $18.5M (lead)
Convective Capital
Raised: $85M — Convective Capital Fund II (May ’26)
Typically first invests at: Pre-seed–Series A
Focus: wildfire & disaster-resilience tech (physical-risk)
Leads vs participates: Frequent Lead
Recent investments:
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- Voltair — drone grid inspection, Seed, Mar ’26, $2M (lead)
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- Drafted — AI home design, Pre-seed, Dec ’25, $2M (lead)
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- Seneca — wildfire suppression drones, Series A, Oct ’25, $60M (co-lead)
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- The Lumber Manufactory — modular sawmill technology, Seed, Jan ’25, $8M (lead)
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- Stand — high-risk home insurance, Seed, Dec ’24, $30M
Burnt Island Ventures
Raised: $50M — Fund II (Oct ’25)
Typically first invests at: Seed–Series A
Focus: water technology, water infrastructure, climate resilience
Leads vs participates: Occasional Lead
Recent investments:
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- CREW Carbon — wastewater carbon removal, Series A, May ’26, $25M (lead)
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- Current Software — water utility billing, Seed, Apr ’26, $2.75M (lead)
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- Aquatic Labs — reagent-free water sensors, Seed, Mar ’26
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- Waterly — water utility software, Seed, Aug ’25, $4M
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- CNSRV — commercial water conservation, Seed, Sep ’25
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- Previsico — live flood forecasting, Series A, Mar ’25 (lead)
Superorganism
Raised: $26M — Superorganism (debut fund) (Jan ’26)
Typically first invests at: Pre-seed–Seed
Focus: biodiversity & nature tech
Leads vs participates: Rarely Leads
Recent investments:
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- Aarden — AI land-investment platform, Seed, Oct ’25, $4M
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- LGND — geospatial earth AI, Seed, Jul ’25, $9M
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- Rosy Soil — biochar peat-free soil, Seed, Dec ’24, $4M
Vitamin°C
Raised: $20M — debut climate fund (Mar ’26)
Typically first invests at: Pre-seed–Seed
Focus: climate mitigation & adaptation: energy, food, carbon
Leads vs participates: Occasional Lead
Recent investments:
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- Satellites on Fire — wildfire detection satellites, Seed, Apr ’26, $3M
Also worth knowing — scale-up capital (beyond Series B): Three recent vehicles are worth a founder’s attention: Energy Impact Partners closed a $1.36B Flagship Fund III (Oct ’25) — growth equity for energy transition, grid tech, and industrial decarbonization; EIP has written Series A checks from this vehicle, but the focus is later. S2G Investments closed a $1B Solutions Fund I — growth-stage, structured capital (Series C and up) for food, energy, and oceans. And Climactic‘s Material Scale ($11M, Feb ’26) is a commercialization debt-equity vehicle — offtake-backed financing for hardware and materials companies scaling into mass production. (Climactic’s venture arm still backs climate software at seed and Series A; it just didn’t raise a new venture fund this year).
Planetary Scale is a fractional CFO and strategic-finance firm for climate-tech founders, seed to Series C. We help founders run effective fundraises and build the finance function investors expect. If a raise is on your horizon, let’s talk.
Data from the Planetary Scale fundraising database built from public announcements and regulatory disclosures. Amounts are capital raised (announced/disclosed); “new checks” = stage of first investment, not follow-on. Last updated June ’26.