About Climate First
Climate First, an accelerator and incubator program founded in 2023, is based in London, United Kingdom. With a presence in 2 countries, it has supported around 9 startups in sectors like Environment Tech, Enterprise Applications. As of Apr 2026, Climate First has 1 unicorn under its belt. Most notable companies in
its portfolio include Fervo Energy, Momentick and QD-SOL. The program is backed by a team of 12 people who primarily support Series E startups based in United States. Its latest investment was a $462M Series E round in Fervo Energy on Dec 04, 2025, which also saw participation from B Capital and AllianceBernstein.
Key Metrics
Founded Year
2023
Location
London, United Kingdom
Portfolio Companies
Sectors of Investment
Stages of Investment
Series E
Locations of Investment
Unicorn in Portfolio
Climate First's List of Top Investments
Climate First has a portfolio of 9 companies, one of which is a Unicorn. Their most notable investments include Fervo Energy and Momentick.Their portfolio spans across Israel and United States. They have invested in Environment Tech, Enterprise Applications, Energy Tech and 8 other sectors, across stages such as Series E stage. Here is the list of top investments by Climate First:
1. Fervo Energy
Developer of next-generation geothermal projects delivering carbon-free energy. It pioneers a new approach to geothermal energy using technologies like horizontal drilling and distributed fiber optic sensing to unlock geothermal resources. It focuses on making geothermal energy a scalable resource and ensures environmental health and safety in its operations. The company aims to decarbonize challenging parts of the electricity sector through geothermal energy.
Key facts about Fervo Energy
- Founded Year: 2017
- Location: San Francisco (United States)
- Stage: Series E
- Total Funding till date: $1.12B
- Employee Count: 225 as on Mar 31, 2026
- Investors: AllianceBernstein, Mitsui and 39 Others
- Latest Funding Round: Conventional Debt, Mar 19, 2026, $*****
- Highlight: Editors' Pick
2. Momentick
Provider of emissions intelligence derived from satellite imagery and algorithms. The company delivers technology to detect and monitor emissions on a global scale. It applies algorithms to satellite imagery from multiple sources. The company tracks emissions performance over time to verify regulatory compliance.
Key facts about Momentick
- Founded Year: 2020
- Location: Ramat Hasharon (Israel)
- Stage: Series A
- Total Funding till date: $5M
- Employee Count: 9 as on Jul 01, 2024
- Investors: FinTLV, Tau Ventures and 4 Others
- Latest Funding Round: Series A, Jan 15, 2025, $*****
3. QD-SOL
Key facts about QD-SOL
- Founded Year: 2021
- Location: Ness Ziona (Israel)
- Stage: Funding Raised
- Investors: Climate First
4. Lava Power
Developer of heat engine technology converting heat into zero-emission electricity. The company’s technology focuses on isothermal heat engines and heat pumps for industrial applications. It offers solutions for converting industrial waste heat and enhancing geothermal energy generation. The company also develops large-scale industrial heat pumps for heating and cooling.
Key facts about Lava Power
- Founded Year: 2020
- Location: Sdot Yam (Israel)
- Stage: Seed
- Total Funding till date: $7M
- Investors: Grove Ventures, Maj Invest and 3 Others
- Latest Funding Round: Seed, Dec 15, 2022, $*****
Provider of AI-enabled underwater ROVs for unmanned maritime inspection. It provides users with AI-based hull inspection and cleaning solutions. It also provides users with anti-fouling coating, installation solutions, and hydrodynamic performance solutions.
Key facts about NakAI Robotics
- Founded Year: 2021
- Location: Holon (Israel)
- Stage: Funding Raised
- Investors: Varana Capital, Tal Ventures and 2 Others
Climate First's Year-on-Year Investment Trends
In 2025, it made 1 investment. Its most recent first time investment was in Fervo Energy.Climate First's Investments by Stage
Climate First has made 1 investment in Series E stage with an average round size of $462M.Climate First's Investments by Sector
Climate First has a diverse portfolio, with companies operating in the Energy Tech, Enterprise Applications, Environment Tech and Sustainability Tech. Notably, it has invested in 6 Enterprise (B2B) companies, 5 Tech companies, 2 Saas companies and at least 2 companies focusing on Social impact.Sector | No. of Investments |
|---|---|
Energy Tech | 1 |
Enterprise Applications | 1 |
Environment Tech | 1 |
Sustainability Tech | 1 |
Note: We have considered here, only first round of investments
Climate First's Investments by Geography
Climate First has made most investments in United States (1).Climate First's recent investments
Climate First has not made any investment in 2026 so far.Here are the most recent investments by Climate First:
Filter this listDate | Company | Location | Round Details | Round Amount | Co-Investors |
|---|---|---|---|---|---|
Dec 04, 2025 | United States | Series E | 2533 | [+23] |
Unicorns in Climate First's Portfolio
Climate First has 1 unicorn in its portfolio - Fervo Energy. The most recent unicorn in their portfolio is Fervo Energy which became a unicorn in 2025.Here is a list of unicorns in Climate First's portfolio:
Tracxn Score | Company | Short Description | Founded year | Sector | Location | Company Stage | First Investment/ Acquisition Details |
|---|---|---|---|---|---|---|---|
65 | Developer of next-generation geothermal projects delivering carbon-free energy | 2017 | San Francisco | Series E | ropjpdg |
Team profile of Climate First
Climate First has a team of 12 members including 4 Partners and 1 Venture Partner located in United Kingdom and United States. Climate First's team does not sit on the board of any company as of now.Here is a list of top team members in Climate First:
Name | Designation | Location | Board Memberships | Contact Details |
|---|---|---|---|---|
Partner | United Kingdom | - | ||
Partner | - | - | ||
Partner | London | - | ||
Partner | London | - | - | |
Venture Partner | Ridgefield | - |
Co-investors of Climate First
Over the past year, 37 investors have co-invested in Climate First's portfolio companies. This includes funds and angels.
- Invested before Climate First: Breakthrough Energy, Capricorn and 22 others have invested in rounds before Climate First. There is 1 company where Breakthrough Energy has invested before Climate First and 1 company where Capricorn has invested before Climate First.
- Top Co-investors of Climate First: 10 investors entered a company along with Climate First. These include investors like B Capital (1 company).
- Invested after Climate First: A total of 3 investors have invested in Climate First's portfolio after their investments. Top Investors include J P Morgan (1 company) and Bank of America (1 company).
Recent News related to Climate First
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Fervo Energy Raises $462 Million Series E to Accelerate Geothermal Development and Meet Surging Energy Demand with Clean, Firm PowerBusiness Wire•Dec 10, 2025•B Capital, Fervo Energy, Vinson & Elkins, Atacama Ventures and 5 others
