What are the latest funding news in the climate tech market? (October 2026)
Building a startup or looking for your next investment in climate tech? Our report gives you the full picture.
Climate tech funding remained active through late September and early October 2026, with capital flowing into clean power, electric mobility, carbon removal, building efficiency, water adaptation and distributed energy.
The 12 latest qualifying deals provided here represent approximately $553.9 million in disclosed equity funding, ranging from a $700,000 carbon-capture financing to Reverion's $175 million Series B.
The mix also shows how broad climate tech has become, with investors backing both capital-intensive physical infrastructure and software-enabled systems that make energy assets more efficient and flexible.
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Insights
- The 12 latest climate tech deals represent about $553.9 million in disclosed funding, but the market remains concentrated: Reverion, Rainmaker and Ultraviolette alone attracted $360 million, roughly 65% of the total.
- September 21 was particularly active for climate tech funding, with four deals totaling about $231.2 million across water adaptation, distributed energy, renewable-energy software and advanced nuclear power.
- Hardware-heavy climate technologies continue to attract the largest checks, with clean power, advanced nuclear, electric mobility and weather modification accounting for most of the capital in this latest group.
- Climate adaptation is becoming a meaningful venture category in its own right, illustrated by Rainmaker's $100 million Series B for technology designed to increase freshwater availability in drought-stressed regions.
- Buildings remain an investable decarbonization segment beyond solar installations, with Novele and Mojave raising a combined $36 million for energy storage, intelligent controls and more efficient commercial HVAC systems.
- Carbon removal funding spans very different maturity levels, from Jeevan's $700,000 early financing for modular carbon capture to Cotierra's commercial-scale biochar deployment across tropical agricultural supply chains.
- Several of the largest rounds are financing manufacturing rather than basic research, suggesting that parts of the climate tech market are moving from technology validation toward industrial deployment and production scale.
- Digital climate infrastructure is still attracting capital when it directly controls physical energy assets, as shown by Amber Electric and Metris Energy, rather than simply measuring or reporting corporate sustainability metrics.
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In our report covering the climate tech market, you will always find fresh funding data, taken straight from our own verified funding database.
Summary table of the latest funding deals in the climate tech market as of October 2026
We define the climate tech market as technologies whose main purpose is to reduce greenhouse gas emissions or help people, assets and ecosystems adapt to the impacts of climate change.
We include solutions across energy, mobility, buildings, industry, food and land use, carbon removal, and the digital and financial tools that directly enable these mitigation or adaptation outcomes.
We exclude broad ESG and sustainability tools, general environmental or social impact solutions without a clear climate focus, and consumer products whose climate impact is indirect, marginal or mainly marketing-driven.
| Name | When | Amount in $ | Round Type | Category |
|---|---|---|---|---|
| Jeevan Climate Solutions | October 2, 2026 | $0.70M | Equity financing | Carbon removal & direct air capture |
| Novele | September 30, 2026 | $17M | Series A | Building energy & distributed storage |
| Reverion | September 29, 2026 | $175M | Series B | Clean power & energy storage |
| ArkeaBio | September 29, 2026 | $15M | Series A2 | Agricultural methane & climate biotech |
| Cotierra | September 29, 2026 | $3M | Venture equity | Biochar & carbon removal |
| Ultraviolette Automotive | September 23, 2026 | $85M | Series E | Electric mobility |
| Mojave Energy Systems | September 23, 2026 | $19M | Series B | Building HVAC & energy efficiency |
| American Supercritical | September 23, 2026 | $8M | Pre-seed | Waste-heat recovery & power efficiency |
| Rainmaker | September 21, 2026 | $100M | Series B | Climate adaptation & water |
| Amber Electric | September 21, 2026 | ~$56.2M | Series E | Distributed energy & grid flexibility |
| Metris Energy | September 21, 2026 | ~$5M | Seed | Renewable-energy asset management |
| Kairos Power | September 21, 2026 | $70M | Strategic equity | Advanced nuclear & clean power |
All the latest funding deals in the climate tech market as of October 2026
Jeevan Climate Solutions raised $0.70 million in equity funding in October 2026
When was it?
Jeevan Climate Solutions reported the financing on October 2, 2026, through a Form D filing covering approximately $700,000 of equity sold.
Who are they?
Jeevan Climate Solutions develops modular systems that use its DeCarbonHIX solid sorbent to capture CO2 from industrial emissions and ambient air.
Geographical focus?
Jeevan Climate Solutions is based in Pennsylvania and is developing carbon-capture technology that can ultimately be deployed in industrial and direct-air-capture projects internationally.
Why do we include them in the climate tech market?
Jeevan Climate Solutions belongs in climate tech because carbon removal is the core purpose of its technology, placing the company in the carbon capture and direct air capture category.
What is the company stage?
Jeevan Climate Solutions is at the MVP and pilot stage, with an operational direct-air-capture prototype as it works toward larger commercial deployments.
How much did they raise?
Jeevan Climate Solutions reported approximately $0.70 million of equity sold in this financing.
What round is it?
Jeevan Climate Solutions disclosed an equity financing without a conventional Series designation.
Why did they raise?
Jeevan Climate Solutions is expected to use the capital to continue advancing its carbon-capture platform from technical validation toward commercial deployment.
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Novele raised $17 million in a Series A in September 2026
When was it?
Novele announced the Series A on September 30, 2026.
Who are they?
Novele combines AI-powered building-energy software with distributed battery hardware to predict and optimize electricity use inside occupied commercial buildings.
Geographical focus?
Novele is initially focused on commercial buildings across the United States and is using the financing to support a wider national rollout.
Why do we include them in the climate tech market?
Novele belongs in climate tech because its system reduces electricity demand and increases grid flexibility, placing it in the building energy and distributed storage category.
What is the company stage?
Novele is at the early-growth stage, with a commercial full-stack product and a strategy to expand deployments across the United States.
How much did they raise?
Novele raised $17 million in this financing.
What round is it?
Novele raised an oversubscribed Series A.
Why did they raise?
Novele raised the capital to expand nationally and scale its BoardOS software and EnergyBoard distributed-energy hardware across more commercial buildings.
Reverion raised $175 million in a Series B in September 2026
When was it?
Reverion announced the Series B on September 29, 2026.
Who are they?
Reverion builds reversible solid-oxide fuel-cell power plants that generate electricity from renewable gases and can reverse operation to store electricity as gas.
Geographical focus?
Reverion is based in Germany, where it is expanding manufacturing capacity while targeting energy projects and customers internationally.
Why do we include them in the climate tech market?
Reverion belongs in climate tech because its plants enable highly efficient dispatchable power, energy storage and biogenic CO2 capture, placing it in the clean power and energy storage category.
What is the company stage?
Reverion is in industrial scale-up, with pre-series systems already operating and the company now preparing for much higher manufacturing volumes.
How much did they raise?
Reverion raised $175 million in this financing.
What round is it?
Reverion raised a Series B.
Why did they raise?
Reverion raised the capital mainly to build a new German production site, increase manufacturing capacity roughly tenfold and support larger commercial deployments.
ArkeaBio raised $15 million in a Series A2 in September 2026
When was it?
ArkeaBio announced the financing on September 29, 2026.
Who are they?
ArkeaBio is developing a vaccine that targets methane-producing microbes inside cattle rumens to reduce livestock methane emissions.
Geographical focus?
ArkeaBio is targeting the global livestock industry, with New Zealand planned as the first market for its commercial product.
Why do we include them in the climate tech market?
ArkeaBio belongs in climate tech because reducing livestock methane is the direct purpose of its product, placing it in agricultural methane reduction and climate biotech.
What is the company stage?
ArkeaBio is in late R&D and remains pre-commercial as it concentrates resources on its first methane-reducing vaccine and initial market launch.
How much did they raise?
ArkeaBio raised $15 million in this financing.
What round is it?
ArkeaBio raised a Series A2.
Why did they raise?
ArkeaBio raised the capital to advance its first commercial methane vaccine, support its New Zealand launch and reach the milestones needed for initial revenue.
In our market report about climate technology, we always try to gather several sources and make estimates that make sense, so you can work with solid numbers.
Cotierra raised $3 million for its biochar platform in September 2026
When was it?
Cotierra's financing was reported on September 29 and September 30, 2026.
Who are they?
Cotierra builds decentralized biochar reactors and monitoring technology that convert agricultural residues into stable carbon directly inside farming supply chains.
Geographical focus?
Cotierra focuses on tropical agricultural supply chains, starting with coffee and expanding into crops including cocoa, cotton and citrus.
Why do we include them in the climate tech market?
Cotierra belongs in climate tech because its biochar systems remove carbon while reducing agricultural emissions, placing it in the biochar and carbon removal category.
What is the company stage?
Cotierra is at the early-commercial stage, moving from successful field deployments toward repeatable multi-year installations across multiple agricultural commodities.
How much did they raise?
Cotierra raised $3 million in this financing.
What round is it?
Cotierra raised a venture-equity round without a publicly disclosed Series designation.
Why did they raise?
Cotierra raised the capital to industrialize its reactor and digital monitoring platform, scale existing deployments and enter additional tropical agricultural supply chains.
Ultraviolette Automotive raised $85 million in a Series E in September 2026
When was it?
Ultraviolette Automotive announced the financing on September 23, 2026.
Who are they?
Ultraviolette Automotive designs and manufactures high-performance electric motorcycles and scooters using its own battery, powertrain and connected-vehicle technologies.
Geographical focus?
Ultraviolette Automotive sells in India and Europe and is preparing further expansion into the United States, Latin America and Southeast Asia.
Why do we include them in the climate tech market?
Ultraviolette Automotive belongs in climate tech because its product portfolio replaces combustion-engine two-wheelers with battery-electric vehicles, placing it in the electric mobility category.
What is the company stage?
Ultraviolette Automotive is at the growth stage, with commercial vehicle sales underway and manufacturing and international distribution expanding.
How much did they raise?
Ultraviolette Automotive raised $85 million in this financing.
What round is it?
Ultraviolette Automotive raised a Series E.
Why did they raise?
Ultraviolette Automotive raised the capital to scale production, launch new models, develop its next generation of electric-vehicle platforms and expand internationally.
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Mojave Energy Systems raised $19 million in a Series B in September 2026
When was it?
Mojave Energy Systems announced the financing on September 23, 2026.
Who are they?
Mojave Energy Systems builds liquid-desiccant HVAC systems that manage humidity separately from temperature to reduce commercial-building cooling and dehumidification energy use.
Geographical focus?
Mojave Energy Systems primarily serves commercial buildings in the United States across sectors including grocery, healthcare, hospitality, education and industrial facilities.
Why do we include them in the climate tech market?
Mojave Energy Systems belongs in climate tech because lower HVAC energy consumption directly reduces building electricity demand, placing it in the building HVAC and energy-efficiency category.
What is the company stage?
Mojave Energy Systems is at the commercial-growth stage, with systems already in the market and manufacturing and sales operations being expanded.
How much did they raise?
Mojave Energy Systems raised $19 million in this financing.
What round is it?
Mojave Energy Systems raised a Series B.
Why did they raise?
Mojave Energy Systems raised the capital to expand manufacturing, grow its sales organization and develop additional products based on its ArctiDry technology.
American Supercritical raised $8 million in pre-seed funding in September 2026
When was it?
American Supercritical announced the financing on September 23, 2026, as the company emerged from stealth.
Who are they?
American Supercritical builds compact supercritical-CO2 power systems that convert gas-turbine exhaust heat into additional electricity without consuming additional fuel.
Geographical focus?
American Supercritical is initially targeting gas turbines in the United States, particularly installations serving data centers and distributed-power applications.
Why do we include them in the climate tech market?
American Supercritical belongs in climate tech because its core technology recovers wasted heat and improves fuel efficiency, placing it in waste-heat recovery and power efficiency.
What is the company stage?
American Supercritical is pre-commercial and is moving from engineering development toward testing, pilot deployment and low-volume production.
How much did they raise?
American Supercritical raised $8 million in this financing.
What round is it?
American Supercritical raised a pre-seed round.
Why did they raise?
American Supercritical raised the capital to commercialize its supercritical-CO2 power blocks, expand engineering and testing, and establish low-volume manufacturing capacity.
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Rainmaker raised $100 million in a Series B in September 2026
When was it?
Rainmaker announced the Series B on September 21, 2026.
Who are they?
Rainmaker uses autonomous aircraft, radar and atmospheric software to seed suitable clouds and increase rain or snowfall for additional freshwater supply.
Geographical focus?
Rainmaker is initially focused on the western United States, where drought and water constraints create significant demand for additional precipitation.
Why do we include them in the climate tech market?
Rainmaker belongs in climate tech because its technology helps regions adapt to water scarcity and drought, placing it in climate adaptation, water and weather modification.
What is the company stage?
Rainmaker is at the PMF and early-growth stage, with field deployments completed while the company continues to scale the technology and its geographic footprint.
How much did they raise?
Rainmaker raised $100 million in this financing.
What round is it?
Rainmaker raised a Series B.
Why did they raise?
Rainmaker raised the capital to expand atmospheric research, improve autonomous cloud-seeding systems and sensing technology, and scale freshwater production into additional regions.
Amber Electric raised approximately $56.2 million in a Series E in September 2026
When was it?
Amber Electric announced the financing on September 21, 2026.
Who are they?
Amber Electric combines dynamic electricity retail with software that automatically manages home batteries, solar systems and electric vehicles using real-time energy prices.
Geographical focus?
Amber Electric is strongest in Australia and is now expanding its distributed-energy platform into the United Kingdom and continental Europe.
Why do we include them in the climate tech market?
Amber Electric belongs in climate tech because its platform helps renewable electricity and distributed batteries respond to grid conditions, placing it in distributed energy and grid flexibility.
What is the company stage?
Amber Electric is at the growth stage, with a significant Australian battery-automation footprint and an expanding international utility-partnership strategy.
How much did they raise?
Amber Electric raised €49 million, equivalent to approximately $56.2 million at the time of the announcement.
What round is it?
Amber Electric raised a Series E.
Why did they raise?
Amber Electric raised the capital to accelerate European expansion and continue developing battery, electric-vehicle and vehicle-to-grid automation technology.
Metris Energy raised approximately $5 million in seed funding in September 2026
When was it?
Metris Energy announced the seed financing on September 21, 2026.
Who are they?
Metris Energy provides an AI-native operating platform that combines operational, meter, financial and contract data for owners of renewable-energy portfolios.
Geographical focus?
Metris Energy was founded in the United Kingdom and is expanding into continental Europe, with Germany among its priority markets.
Why do we include them in the climate tech market?
Metris Energy belongs in climate tech because its software is purpose-built to operate renewable-energy assets, placing it in renewable-energy asset management and digital climate infrastructure.
What is the company stage?
Metris Energy is at the PMF and early-growth stage, managing thousands of renewable-energy projects while expanding its product and geographic reach.
How much did they raise?
Metris Energy raised €4.35 million, approximately $5 million, in this financing.
What round is it?
Metris Energy raised a seed round.
Why did they raise?
Metris Energy raised the capital to develop more AI automation, support additional renewable asset classes and expand the platform across European markets.
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Kairos Power secured $70 million in strategic equity funding in September 2026
When was it?
Kairos Power announced the strategic financing on September 21, 2026.
Who are they?
Kairos Power is developing fluoride-salt-cooled high-temperature nuclear reactors designed to provide reliable zero-carbon electricity at commercial scale.
Geographical focus?
Kairos Power is focused on the United States, with demonstration reactors in Tennessee and manufacturing capabilities in New Mexico.
Why do we include them in the climate tech market?
Kairos Power belongs in climate tech because its reactors are designed to provide firm low-carbon electricity that can replace fossil power, placing it in advanced nuclear and clean power.
What is the company stage?
Kairos Power is at the pre-commercial demonstration stage, with regulatory permits secured and its Hermes reactor program under construction.
How much did they raise?
Kairos Power secured $70 million in equity as part of a package worth up to $100 million when in-kind engineering services are included.
What round is it?
Kairos Power received a strategic equity investment rather than a conventional Series round.
Why did they raise?
Kairos Power raised the capital to support engineering and construction of Hermes 2 and prepare the capabilities required for later commercial reactor deployments.
In our market report about climate technology, we don't want to repeat what boring consulting reports say. Instead, we show you the real and latest market signals that matter.
Written by the New Market Pitch teamWe track new markets so founders and investors can move faster. About us
