Climate Tech Startup Funding 2025-2026

What are all the funding deals in the climate tech market from August 2025 to July 2026?

The table below lists every disclosed equity round raised by pure-play climate tech companies between August 2025 and July 2026. We count as “pure-play” climate tech companies those whose main purpose is to reduce greenhouse gas emissions or help people, assets and ecosystems adapt to climate change.

Each row shows the company, what it does, its category, the deal date, the funding stage, the round size, the region, the main investors, and the announcement source. For a wider view of how climate tech fits across energy, mobility, buildings, industry, carbon removal and adaptation, we cover it in our Climate Tech market report.

How active has fundraising been in the climate tech market?

As of July 2026, fundraising in the climate tech market has been active but uneven. Over the past 12 months, companies raised 39 disclosed equity rounds and $4.06B combined, which works out to 3.55 deals per month.

The deal count shows that the climate tech market is not a single-round story. Funding appeared across 11 monthly cohorts, with March 2026 standing out at 9 deals and November 2025, May 2026 and June 2026 each reaching 5 deals.

Dollar flow was much less stable than deal flow. The climate tech market averaged $369.5M raised per month, but the median month was only $215.9M, which shows how large rounds skewed the monthly picture.

The strongest months were driven by infrastructure-scale companies. August 2025 reached $1.34B largely because of Commonwealth Fusion Systems and Group14, while November 2025 reached $1.02B with X-energy, Harbinger and Gridware.

If you want to go deeper on the companies behind these funding waves, see our market report covering climate tech funding.

How concentrated has fundraising been in the climate tech market?

As of July 2026, fundraising in the climate tech market has been highly concentrated. Over the past 12 months, the largest deal represented 21.24% of total capital, the top 3 deals represented 49.85%, and the top 10 deals represented 79.91%.

This means climate tech totals should not be read as evenly distributed market health. The $4.06B headline is mostly a story about a small group of power, battery, nuclear, fusion and mobility companies.

Clean Energy Systems alone captured 73.25% of disclosed dollars while representing 41.03% of deals. That gap confirms that the biggest checks were not spread evenly across the full climate tech market.

Concentration also appears geographically. North America captured 77.48% of disclosed capital from 56.41% of deals, showing that the largest checks still cluster in one financing ecosystem.

How much of the climate tech funding signal is driven by outliers?

As of July 2026, most of the funding signal in the climate tech market is driven by outliers. Over the past 12 months, rounds above $50M represented 43.59% of deals and carried the majority of disclosed capital.

The clearest stress test is removing rounds above $50M. Total capital falls from $4.06B to $396.7M, which means megarounds are not an adjustment to the dataset. They are the dataset’s main financing mechanism.

The average round size was $104.2M, while the median round size was $33M. That difference matters because the average overstates what a normal climate tech company in this sample actually raised.

Eight rounds were above $100M, equal to 20.51% of disclosed deals. Those rounds include Commonwealth Fusion Systems, X-energy, Group14, VEMO, Focused Energy, Torus, JetZero and Harbinger.

Is the climate tech market broad with many targets, or narrow with few fundable companies?

As of July 2026, the climate tech market is thematically broad but financially narrow. Over the past 12 months, the dataset includes 39 companies across six categories, but two categories captured 89.66% of all disclosed dollars.

The broadness is visible in the category list. The climate tech market includes clean energy, low-carbon mobility, industrial climate tech, adaptation, carbon removal and building decarbonization.

The narrowness appears in capital allocation. Clean Energy Systems and Low Carbon Mobility dominate dollars, while Carbon Removal Platforms, Building Decarbonization Tech and Climate Adaptation Solutions remain much smaller funding pools.

The opportunity set is therefore not best understood as “all climate solutions.” It is best understood as a market where investors strongly favor companies tied to power access, infrastructure bottlenecks, electrification and large-scale physical deployment.

Is climate tech mostly an early-stage formation market or a late-stage scaling market?

As of July 2026, the climate tech market is almost evenly split between early-stage formation and later-stage scaling. Over the past 12 months, Seed, Series A and Series B rounds represented 48.98% of capital, while later, mature and unknown stages represented 51.02%.

That balance hides a very uneven stage picture. Series B was the strongest stage by dollars, with $1.40B raised, equal to 34.35% of all disclosed capital in the climate tech market.

Series A was the most common stage by deal count, with 13 deals and one-third of disclosed activity. But it captured only 14.03% of capital, which suggests many companies can raise validation capital while fewer graduate to scale financing.

Seed activity was visible but financially small. Four seed rounds produced only $24.7M, or 0.61% of disclosed capital, so new-company formation did not move the market’s dollar economics.

For more context on how stage dynamics shape the climate tech opportunity, see our deeper analysis of the climate tech market.

Which categories attract the most investor attention in climate tech?

As of July 2026, Clean Energy Systems attracted the most investor attention in the climate tech market. Over the past 12 months, the category produced 16 deals and raised $2.98B, equal to 73.25% of disclosed capital.

Clean Energy Systems is both broad and capital-dominant. It includes fusion, nuclear, batteries, grid tools, renewable gas, geothermal, dispatchable solar and long-duration storage.

Industrial Climate Tech ranked second by deal count, with 7 deals, but raised only $201.8M. That suggests investors are exploring many industrial decarbonization technologies without yet underwriting them at the same scale as energy infrastructure.

Low Carbon Mobility ranked second by dollars, with $667M from 5 deals. Its strong dollar share came from VEMO, Harbinger, JetZero, Nanoramic and MAKO, all of which connect climate outcomes to transportation or aviation efficiency.

Which categories attract disproportionately large checks in the climate tech market?

As of July 2026, Clean Energy Systems attracted disproportionately large checks in the climate tech market. Over the past 12 months, it had a capital-share-to-deal-share ratio of 1.79, the strongest ratio among all categories.

That ratio means Clean Energy Systems captured far more capital than its deal count alone would imply. Investors were not merely sampling the category; they were underwriting large technical and deployment risk.

Low Carbon Mobility also over-indexed, with a ratio of 1.28. Its median deal size was $160M, the highest category median, which shows how capital-intensive vehicles, aircraft efficiency, battery platforms and fleet infrastructure can become.

The other categories under-indexed on check size. Industrial Climate Tech, Climate Adaptation Solutions, Carbon Removal Platforms and Building Decarbonization Tech all had capital-share-to-deal-share ratios below 0.30.

Which geographies matter most for fundraising in the climate tech market?

As of July 2026, North America mattered most for fundraising in the climate tech market. Over the past 12 months, it produced 22 deals and $3.15B, equal to 56.41% of deals and 77.48% of disclosed capital.

North America was not just the largest geography by activity. It was the main institutional financing layer for large climate tech rounds, with an average deal size of $143.1M and a median of $54M.

Europe ranked second with 10 deals and $530.9M. Its 25.64% deal share converted into only 13.06% of dollars, which points to strong technical breadth but fewer very large balance-sheet rounds.

Asia-Pacific produced 5 deals and $131.6M, while Latin America produced 2 deals and $252.7M. Latin America’s dollar share was mostly driven by VEMO’s $250M clean mobility round.

If you want to identify the geographies and categories currently attracting the largest checks, explore our full market deck on climate tech.

Is the climate tech opportunity set broad or concentrated in one hub?

As of July 2026, the climate tech opportunity set is global but financially concentrated in one main hub. Over the past 12 months, North America captured 77.48% of disclosed capital, while every other region combined captured 22.52%.

Europe was the clearest second hub by deal count. It produced one-quarter of disclosed deals, but its lower median round size shows that European climate tech funding was more distributed and less dominated by megadeals.

Asia-Pacific under-indexed sharply in public equity dollars. Its 12.82% deal share converted into only 3.24% of disclosed capital, suggesting smaller commercialization or component rounds in this dataset.

The absence of Middle East and Africa deals should not be read as proof of no climate activity. The filter excludes project finance, grants, debt-only financings and undisclosed rounds, which are common in climate-related infrastructure.

Is climate tech a market of small experiments or scaled financings?

As of July 2026, climate tech is a market of scaled financings rather than small experiments. Over the past 12 months, 18 disclosed rounds were $50M or larger, while only 2 rounds were below $5M.

The middle of the climate tech market is thinner than expected. There were 12 rounds between $5M and $20M, 7 rounds between $20M and $50M, and 18 rounds at $50M or more.

This structure points to a financing cliff. Many climate tech companies can raise validation capital, but only a smaller group can cross into infrastructure-scale or manufacturing-scale financings.

The median round size of $33M is more representative than the $104.2M average. The average is heavily distorted by fusion, nuclear, battery, grid, mobility and other large infrastructure rounds.

If you want to stay on top of the funding thresholds and scaling patterns in this market, check out our market report on climate tech.

Who are the investors that appear the most in climate tech fundraising?

As of July 2026, only nine investors appeared in more than one disclosed climate tech deal. Over the past 12 months, investor repetition was visible, but not concentrated enough to imply a closed insider market.

Galvanize appeared in X-energy, Quilt and DISA Technologies. Future Energy Ventures appeared in Reel and GridCARE, while Climate Capital appeared in Scalvy and Thea Energy.

Peak XV or Surge, Avaana Capital, Union Square Ventures, Fifty Years, Barclays Climate Ventures and Energy Impact Partners each appeared in two deals. Most repeat investors focused on adjacent themes rather than the full climate tech market.

This pattern matters because climate tech is too broad for one investor cluster to define it. Repeat exposure exists, but the largest rounds are still shaped by category-specific capital needs, strategic demand and infrastructure credibility.

One caveat matters for any investor ranking. Round announcements rarely disclose each investor’s individual check size, so repeat participation should not be read as exact dollars committed by investor.

Who is the author of this content?

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