Breakthrough Energy Ventures

Breakthrough Energy Ventures is an investor-led venture capital firm based in Kirkland, Washington, focused on climate and energy technology. It makes minority investments across seed, early, and later stages in companies delivering environmental services, climate technology, and cleantech solutions. The firm seeks scalable technologies that provide reliable, affordable power while reducing greenhouse gas emissions and supports innovations that address energy access, infrastructure, and transportation needs. Its mission emphasizes patient, impact-oriented investing to accelerate the transition to low-emission energy systems.

Bunmi Adekore

Investor

Tara Bansal

Investor

Gaëtan Bonhomme

Investor

Jim Cabot

Managing Director

Priscilla Chan MD

Co-Founder, Breakthrough Energy Coalition

Bhargavi Chevva

Investor

Quinn Cornelius

Investor

David Danielson

Managing Director

Mark Gallogly

Investor

Christian Garcia

Managing Director

Tom Griffin

Investor

Mark Hartney

Principal

Timothy Heidel

Principal

Christina Karapataki

Partner

Sila Kiliccote

Partner

Allegra Kowalewski-Ferreira

Investor

Phil Larochell

Principal

Phil Larochelle Ph.D

Partner, Breakthrough Energy Ventures

Cheua Lovan

Investor

Brian Mayers

Investor

Jeff Momplaisir

Senior Associate

Chris Poirier

Investor

Julia Reinaud Ph.D

Senior Director, Europe

Juilia Reinaud

Senior Director

Cooper Rinzler

Investor

Christopher Rivest

Investor

Kyle Teamey

Investor

Eric Toone

Managing Director

Peter Turner

Investor

Libby Wayman

Investor

Karl White

Investor

Stefan Zlatev

Investor

Past deals in Renewables

Arnergy

Series B in 2025
Arnergy specializes in delivering sustainable energy solutions for businesses and homes in emerging markets. Its mission is to provide clean, reliable power tailored to tackle intermittency and grid unreliability, enabling clients to access affordable distributed energy systems.

Bloom Biorenewables

Series A in 2025
Bloom Biorenewables Ltd is a Swiss company established in 2019, specializing in the development of innovative technologies that convert wood and agricultural waste into renewable materials as substitutes for petroleum-based products. The company focuses on producing bio-based materials for various sectors, including fragrances, plastics, and textiles, thereby offering sustainable alternatives to fossil fuels. By introducing a novel approach to the production of biorenewable products and fuels, Bloom Biorenewables aims to make a significant impact in promoting the use of sustainable resources and addressing climate change challenges.

Aetherflux

Series A in 2025
Aetherflux is an aerospace company focused on providing renewable energy solutions to households, businesses, and military operations worldwide. The company has developed an innovative design for space-based solar power, which entails a constellation of small satellites that harness sunlight, convert it into electricity, and wirelessly transmit the power to ground stations. This technology aims to deliver reliable energy distribution while minimizing environmental impact, positioning Aetherflux at the forefront of the renewable energy sector.

Terra CO2 Technologies

Series B in 2025
Terra CO2 Technologies produces low-carbon alternatives for cement replacement. It converts locally sourced feedstocks into high-performing, cost-competitive cementitious materials, aiming to reduce emissions in the construction industry.

INERATEC

Grant in 2025
INERATEC develops sustainable fuels and power-to-X plants to replace fossil fuels with carbon-neutral alternatives. The company focuses on renewable e-fuels and synthetic chemical products that enable transportation and industrial processes to run on climate-friendly energy. It produces renewable hydrogen and other greenhouse gases, which are transformed into products such as e-kerosene, carbon dioxide-neutral diesel, synthetic waxes, and methanol, allowing chemical plants to operate using synthetic fuels with climate-neutral energy, reduced chemical waste, and enhanced climate protection.

Mangrove Lithium

Venture Round in 2025
Mangrove Lithium is a Vancouver-based company that has developed a modular platform for producing battery-grade lithium hydroxide and carbonate efficiently from diverse input streams. Its scalable solution can be co-located with upstream producers or manufacturers, enabling cost-effective conversion of waste brines to chemicals and desalinated water.

H2SITE

Series B in 2025
H2SITE develops on-site hydrogen production technology that enables compact systems for generating hydrogen at customer sites. The technology supports low-carbon hydrogen production and integrates production, transportation, and storage, making hydrogen transport more viable and helping unlock hydrogen markets. The company aims to help businesses reduce transportation costs and energy waste by providing efficient, on-site hydrogen solutions.

Stoke Space

Series C in 2025
Stoke Space is a company dedicated to developing a fully reusable medium-lift rocket known as Nova, which aims to provide cost-effective and sustainable access to space. The company focuses on creating rockets that deliver satellites in a manner that is low-cost, on-demand, and capable of daily flights. By emphasizing environmental stewardship, Stoke Space seeks to significantly reduce atmospheric impact and facilitate dynamic space operations. With its vertically integrated design and manufacturing capabilities, the company is positioned to accelerate the growth of the space economy while promoting sustainable practices in the aerospace industry.

Deep Sky

Grant in 2024
Deep Sky develops carbon dioxide removal infrastructure and technologies to capture and store CO2 using renewable energy at scale. It provides renewable-energy powered capture and storage services that enable compliance, voluntary, and government procurement markets to monetize premium carbon dioxide removal credits while ensuring safe, long-term storage of the gas. By combining scalable capture with storage and environmental resources, Deep Sky supports efforts to reduce the carbon footprint and accelerate market adoption of CDR solutions.

HyperHeat

Pre Seed Round in 2024
HyperHeat develops advanced electric heating solutions capable of reaching temperatures up to 2000°C. Utilizing renewable electricity, HyperHeat provides an efficient alternative to fossil fuels for industries like steel, cement, and chemicals. With a high efficiency rate and scalability, the technology offers significant CO2 emission reductions.

NitroVolt

Seed Round in 2024
NitroVolt decarbonizes nitrogen-based fertilizer production for agriculture. Its patented Nitrolyzer unit produces ammonia on-demand using air, water, and renewable electricity at farms, reducing emissions and logistics costs.

LuxWall

Series B in 2024
LuxWall is a building materials company that designs and manufactures vacuum-insulated glass, a transparent insulation material that reduces heating and cooling losses and improves building energy efficiency. Its vacuum-insulated glass supports energy standards for commercial and residential buildings and uses technology aimed at enabling greater thermal performance. Founded in 2020 and headquartered in Ypsilanti, Michigan, LuxWall seeks to advance sustainable construction and has indicated a potential to reduce global carbon emissions by more than 0.5 gigatonnes per year, highlighting its environmental impact.

RedoxBlox

Series A in 2024
RedoxBlox develops thermochemical energy storage technology to decarbonize high-temperature industrial thermal processing and provide long-duration energy storage for the grid. The technology enables continuous high-temperature heat while integrating with existing infrastructure to replace natural gas combustion, supporting electrification and renewables deployment. It reduces carbon dioxide and nitrogen oxides emissions, enhances safety and resilience, and aims to lower total capital cost for industrial processors and power plant operators. By delivering scalable, long-duration heat, RedoxBlox helps industries leverage renewable energy and move toward low-emission operations.

AirLoom Energy

Seed Round in 2024
AirLoom Energy develops wind energy technology that uses lightweight wings operating on a track to capture wind. The design aims to deliver the same amount of energy as conventional turbines at a fraction of the cost, enabling low-cost utility-scale wind energy. The system uses multiple small airframes on a slender oval track with downwind forces supported by a bridling system, and the configuration can be adjusted depending on the landscape, allowing clients to harvest wind energy in cost-effective and quicker ways.

Dandelion Energy

Series C in 2024
Dandelion Energy, Inc. is a Palo Alto, California-based company founded in 2017 that specializes in affordable geothermal heating and cooling solutions. The company replaces traditional air conditioning and heating systems with an innovative home geothermal system that utilizes a powerful heat pump and underground pipes to transfer heat between the earth and the residence. This system is designed to harness thermal energy from below the earth's surface to regulate indoor temperatures and provide hot water, allowing homeowners to transition from conventional heating fuels to a more sustainable geothermal alternative. Dandelion Energy is committed to making renewable heating and cooling accessible and cost-effective for homeowners.

Baseload Capital

Series B in 2024
Baseload Capital invests globally in renewable heat power projects. It provides financial tools for operators to build and run these plants, focusing on geothermal systems that offer clean, reliable energy.

Type One Energy

Seed Round in 2024
Founded in 2019 by renowned fusion scientists and business leaders, Type One Energy is dedicated to delivering sustainable and affordable fusion power globally. The company employs advanced manufacturing methods, computational physics, and high-field superconducting magnets to develop its optimized stellarator fusion energy system. Its FusionDirect program aims for a low-risk, efficient path to a fusion power plant within the next decade.

Graphyte

Series A in 2024
Graphyte offers carbon removal services by utilizing a carbon casting technology.

44.01

Series A in 2024
44.01 specializes in CO2 removal from the atmosphere by accelerating the natural weathering process in peridotite rocks, converting captured CO2 into stable minerals.

TS Conductor

Venture Round in 2024
TS Conductor specializes in advanced electrical transmission conductors. Utilizing a carbon-fiber-composite core instead of steel, their products are lighter, stronger, and more efficient, carrying higher current with reduced energy loss.

Rondo Energy

Grant in 2024
Rondo Energy is a company focused on providing zero-carbon industrial heat solutions. Its innovative Rondo Heat Battery captures low-cost renewable electricity and converts it into continuous high-temperature heat, allowing industrial processes to operate with reduced energy costs and eliminated emissions. By enabling clients to transition to renewable energy sources, Rondo Energy supports the decarbonization of industrial operations, contributing to a more sustainable future.

Planted Solar

Series A in 2024
Planted Solar develops and deploys solar power plants using a rapid deployment platform that increases energy output per acre and accelerates project delivery. It combines development software, terrain-adaptive high-density racking, and automated construction to build flexible, all-terrain power plants. Through advanced site planning and logistics, the company aims to maximize land use and streamline solar development, enabling faster, scalable deployment of clean energy.

Xcimer

Series A in 2024
Xcimer Energy is an innovative company focused on developing laser-driven fusion technology to deliver affordable, abundant, and carbon-free energy. Founded in 2021 and based in Redwood City, California, Xcimer integrates low-cost excimer laser technology with the HYLIFE reaction chamber concept to create a scalable Inertial Fusion Energy (IFE) system. This approach addresses significant challenges that have historically hindered the viability of fusion power, enabling the application of experimentally proven controlled fusion reactions for electrical power generation. By transforming the energy marketplace, Xcimer aims to provide a sustainable energy solution that can meet growing global demands.

Reactive Technologies

Series D in 2024
Reactive Technologies LTD is an energy technology company based in London, United Kingdom, focused on facilitating the transition to clean energy through innovative solutions for grid operators, electric utilities, and renewable asset owners. The company offers a range of advanced technologies, including GridMetrix, which provides real-time inertia measurements for transmission system operators, and GridMetrix for distribution network operators, which measures system strength and helps manage constraints. Its Tradenergy platform enhances forecasting, risk management, and optimization for energy flexibility, while the Dynamic PPA feature allows generators to capitalize on market opportunities and mitigate price risks. Reactive Technologies is recognized for its groundbreaking Grid-Sonar™ technology, which delivers precise data on grid operations, thereby improving planning and maximizing electricity supply utilization. Established in 2010, the company has expanded its reach internationally, with commercial offices in the UK, USA, and Australia, and an R&D center in Finland.

Windfall Bio

Series A in 2024
Windfall Bio is an innovative company based in San Mateo, California, that addresses climate change by transforming harmful methane emissions into organic fertilizer. Established in 2022, the company utilizes methane-eating microbes to capture methane from various sources, including agriculture, oil and gas, and waste management. This nature-based technology not only reduces the methane footprint of these industries but also improves their operational efficiency and profitability while minimizing the negative environmental impacts associated with synthetic fertilizers. By providing farmers and other producers with the means to convert methane into valuable soil nutrients, Windfall Bio fosters a sustainable agricultural future and contributes positively to environmental conservation. The company is backed by prominent venture capital firms, reflecting its potential to make a significant impact in the fight against climate change.

Mission Zero

Series A in 2024
Mission Zero develops air capture technology that removes carbon dioxide from the atmosphere and concentrates it for sequestration pathways. The system is designed to recover historic CO2 at any scale by pulling ambient air, dissolving the carbon in a water solvent, and releasing it as a gas through electrodialysis, enabling CO2 users, project developers, engineers, and scientists to convert historic carbon waste into climate value.

Equilibrium Energy

Funding Round in 2023
Equilibrium Energy specializes in optimizing energy consumption and reducing costs through its advanced energy management platform. The company aims to facilitate sustainable practices, enhance efficiency for power companies, and contribute positively to the environment.

Fourth Power

Series A in 2023
Fourth Power specializes in utility-scale thermal battery storage solutions. It converts renewable energy into a reliable on-demand power source, addressing grid needs while facilitating the transition to decarbonized infrastructure.

Malta

Venture Round in 2023
Malta is a developer of industrial-grade, grid-scale electro-thermal energy storage technology. The system captures energy from wind, solar, and fossil generators, converts electrical energy into thermal energy by creating a temperature difference, stores heat in molten salt, and reconverts it to electricity with a heat engine to be dispatched to the grid when needed. The technology enables long-duration energy storage, helping mitigate wind and solar curtailment and improve the matching of generation and demand, addressing bottlenecks in distribution and transmission and supporting affordable, reliable electricity on demand. Founded in 2018 and based in Cambridge, Massachusetts, Malta's solution targets grid operators and energy players seeking to balance supply and demand with grid-scale storage.

AirLoom Energy

Seed Round in 2023
AirLoom Energy develops wind energy technology that uses lightweight wings operating on a track to capture wind. The design aims to deliver the same amount of energy as conventional turbines at a fraction of the cost, enabling low-cost utility-scale wind energy. The system uses multiple small airframes on a slender oval track with downwind forces supported by a bridling system, and the configuration can be adjusted depending on the landscape, allowing clients to harvest wind energy in cost-effective and quicker ways.

NitroVolt

Grant in 2023
NitroVolt decarbonizes nitrogen-based fertilizer production for agriculture. Its patented Nitrolyzer unit produces ammonia on-demand using air, water, and renewable electricity at farms, reducing emissions and logistics costs.

Yard Stick

Series A in 2023
Yard Stick develops a handheld device that measures soil carbon levels in real-time. This enables evidence-based regenerative farming practices, improving soil health, increasing farmer income, and combating climate change by sequestering carbon.

Rondo Energy

Series B in 2023
Rondo Energy is a company focused on providing zero-carbon industrial heat solutions. Its innovative Rondo Heat Battery captures low-cost renewable electricity and converts it into continuous high-temperature heat, allowing industrial processes to operate with reduced energy costs and eliminated emissions. By enabling clients to transition to renewable energy sources, Rondo Energy supports the decarbonization of industrial operations, contributing to a more sustainable future.

Equilibrium Energy

Series A in 2023
Equilibrium Energy specializes in optimizing energy consumption and reducing costs through its advanced energy management platform. The company aims to facilitate sustainable practices, enhance efficiency for power companies, and contribute positively to the environment.

Dioxycle

Series A in 2023
Dioxycle develops electrolyser solutions that convert captured carbon dioxide into valuable chemical products. Its technology enables businesses to treat carbon dioxide as a resource, reducing reliance on fossil feedstocks and lowering industrial emissions.

CarbonCure

Venture Round in 2023
CarbonCure Technologies Inc. is a Canadian company that specializes in technology designed to sequester carbon dioxide (CO2) in concrete production. Founded in 2007 and headquartered in Dartmouth, Nova Scotia, the company provides a retrofit solution for existing concrete plants, allowing producers to incorporate waste CO2 from industrial emitters into their concrete products. During manufacturing, this CO2 is chemically converted into solid mineral carbonates, enhancing the strength of the concrete while reducing its carbon footprint. CarbonCure's innovative approach enables concrete manufacturers to produce green concrete without compromising quality or cost, thereby facilitating a shift towards sustainable building practices. The company also offers marketing and environmental reporting services to support its customers in the growing green building market. By licensing its technology at a low capital expenditure, CarbonCure generates a recurring revenue stream while contributing to the reduction of greenhouse gas emissions in the concrete industry.

CubicPV

Venture Round in 2023
CubicPV is a solar manufacturing company that focuses on producing wafers and tandem modules using advanced silicon and perovskite technologies. The company develops innovative semiconductor combinations for tandem modules, which enhance energy harvesting by utilizing two different light absorbers, thus improving efficiency across a broader spectrum of sunlight. This technology aims to reduce the cost of solar electricity to be competitive with conventional energy sources, such as coal. By manufacturing silicon wafers directly from the silicon melt, CubicPV streamlines the production process, eliminating several steps and effectively doubling the yield. This approach not only lowers the cost of clean electricity but also minimizes the carbon footprint associated with solar panel production, supporting the growing global demand for sustainable energy solutions.

Xcel Energy

Grant in 2023
Xcel Energy is a leading electric and natural gas utility company serving approximately 6 million customers across eight states. It generates power through diverse sources including coal, nuclear, natural gas, hydro, solar, wind, and biomass. The company is committed to reducing carbon emissions and aims to supply more than half of its electricity from renewable sources by 2030.

Type One Energy

Seed Round in 2023
Founded in 2019 by renowned fusion scientists and business leaders, Type One Energy is dedicated to delivering sustainable and affordable fusion power globally. The company employs advanced manufacturing methods, computational physics, and high-field superconducting magnets to develop its optimized stellarator fusion energy system. Its FusionDirect program aims for a low-risk, efficient path to a fusion power plant within the next decade.

Windfall Bio

Seed Round in 2023
Windfall Bio is an innovative company based in San Mateo, California, that addresses climate change by transforming harmful methane emissions into organic fertilizer. Established in 2022, the company utilizes methane-eating microbes to capture methane from various sources, including agriculture, oil and gas, and waste management. This nature-based technology not only reduces the methane footprint of these industries but also improves their operational efficiency and profitability while minimizing the negative environmental impacts associated with synthetic fertilizers. By providing farmers and other producers with the means to convert methane into valuable soil nutrients, Windfall Bio fosters a sustainable agricultural future and contributes positively to environmental conservation. The company is backed by prominent venture capital firms, reflecting its potential to make a significant impact in the fight against climate change.

Viridos

Series A in 2023
Viridos is a company that develops and commercializes genomic-driven solutions aimed at tackling global energy and environmental issues. It specializes in synthesizing and programming DNA to create and utilize technologies in synthetic genomics. The company designs and develops microbes for various industrial processes and environmental applications, including microbial cultivation technologies that identify novel microorganisms and new genes. Additionally, Viridos focuses on enhancing biofuel production, utilizing photosynthetic organisms to generate value-added products from sunlight and carbon dioxide, and improving the recovery rates of subsurface hydrocarbons. Its innovations also extend to the development of high-yield, disease-resistant feedstocks. Through these efforts, Viridos contributes to the production of energy, chemicals, and pharmaceuticals, while also promoting carbon sequestration and environmental remediation.

Stratus Materials

Series A in 2023
Stratus Materials is a manufacturer specializing in the development of manganese-rich, cobalt-free cathode active materials for lithium-ion batteries. Their products aim to deliver superior performance, enhanced safety, reduced costs, and minimal environmental impact, catering primarily to businesses seeking advanced battery solutions for electric vehicles.

PeakSyncer

Seed Round in 2023
PeakSyncer, a subsidiary of Zhong Xi Group, LLC, specializes in an AI-powered cloud platform designed to optimize energy management for utility companies. The platform leverages artificial intelligence to automate and streamline demand response programs, reducing peak energy loads. It offers real-time reporting, seamless data tracking, and integration with existing infrastructure, ensuring smooth implementation. PeakSyncer also facilitates compliance with regulatory requirements and supports sustainable energy ecosystems by engaging customers in demand response initiatives. The platform is scalable, continuously learning from past syncs to improve accuracy and efficiency, and offers 24/7 monitoring and dedicated support.

Rumin8

Seed Round in 2023
Rumin8 is addressing a critical environmental challenge by targeting methane emissions from livestock, which account for approximately 3.7% of global greenhouse gas emissions. The company has developed a groundbreaking technology that significantly reduces methane emissions from cattle by up to 95% by harnessing and transforming natural anti-methane compounds found in plants into dietary supplements for livestock. This innovation not only curtails methane production but also enhances the efficiency of the animals’ digestive systems, thereby providing them with more energy for growth. Rumin8's mission is to decarbonize millions of cattle worldwide, contributing to a more sustainable and climate-favorable food system to meet the dietary needs of a growing global population.

LuxWall

Venture Round in 2023
LuxWall is a building materials company that designs and manufactures vacuum-insulated glass, a transparent insulation material that reduces heating and cooling losses and improves building energy efficiency. Its vacuum-insulated glass supports energy standards for commercial and residential buildings and uses technology aimed at enabling greater thermal performance. Founded in 2020 and headquartered in Ypsilanti, Michigan, LuxWall seeks to advance sustainable construction and has indicated a potential to reduce global carbon emissions by more than 0.5 gigatonnes per year, highlighting its environmental impact.

Dandelion Energy

Series B in 2022
Dandelion Energy, Inc. is a Palo Alto, California-based company founded in 2017 that specializes in affordable geothermal heating and cooling solutions. The company replaces traditional air conditioning and heating systems with an innovative home geothermal system that utilizes a powerful heat pump and underground pipes to transfer heat between the earth and the residence. This system is designed to harness thermal energy from below the earth's surface to regulate indoor temperatures and provide hot water, allowing homeowners to transition from conventional heating fuels to a more sustainable geothermal alternative. Dandelion Energy is committed to making renewable heating and cooling accessible and cost-effective for homeowners.

Othersphere

Pre Seed Round in 2022
Othersphere develops a SaaS platform that helps identify profitable and sustainable locations for deploying zero or low greenhouse gas industrial technologies. This enables companies to reduce their greenhouse gas emissions trajectories while gaining access to unique market insights.

RIFT

Seed Round in 2022
RIFT is a startup on a mission towards a sustainable future that is powered by clean and renewable energy.

Baseload Capital

Convertible Note in 2022
Baseload Capital invests globally in renewable heat power projects. It provides financial tools for operators to build and run these plants, focusing on geothermal systems that offer clean, reliable energy.

LanzaJet

Grant in 2022
LanzaJet is a company dedicated to producing sustainable aviation fuels (SAF) aimed at reducing the environmental impact of the aviation industry. By utilizing innovative technology, LanzaJet converts non-recyclable waste into low-carbon fuels, providing a viable alternative to traditional fossil fuels. The company's mission aligns with the principles of the circular economy, as it seeks to accelerate the energy transition while enabling airlines to lower their carbon emissions. Through its commitment to cleaner fuel options, LanzaJet plays a significant role in addressing the challenges of greenhouse gas emissions in aviation.

Molten Industries

Seed Round in 2022
Molten Industries specializes in developing clean technology aimed at decarbonizing the hydrogen market. Its innovative platform combines methane-splitting and electrolysis technologies, featuring integrated thermal control and modular design for low-emission performance. This enables various industrial sectors to access cleaner hydrogen inputs with reduced environmental impact and scalable deployment.

Electra

Venture Round in 2022
Electra is a company dedicated to revolutionizing iron and steel production by significantly reducing carbon dioxide emissions. It specializes in alternative steelmaking technology that employs innovative electrochemical and hydrometallurgical processes. By electrifying and decarbonizing the steelmaking process, Electra enables the production of low-carbon clean iron from various ores and renewable energy sources. This approach not only minimizes the environmental impact associated with traditional steel production but also helps companies lower energy intensity and costs, promoting sustainability within the industry.

Blue World Technologies

Series B in 2022
Blue World Technologies is a developer and manufacturer of methanol fuel cell components and systems aimed at the automotive, heavy-duty transportation, and stationary application sectors globally. Founded on January 1, 2018, in Aalborg, Nordjylland, by Mads Friis Jensen, Mads Bang, and Anders Korsgaard, the company offers a green alternative to traditional combustion engines and diesel generators. Its innovative approach focuses on high-temperature PEM technology combined with methanol-reforming, providing energy-efficient and sustainable solutions. Blue World Technologies enables clients to establish development and manufacturing operations in strategic markets, optimizing the supply chain and enhancing customer proximity.

Fervo Energy

Series C in 2022
Founded in 2017, Fervo Energy specializes in developing and operating geothermal assets using proprietary technology. Based in San Francisco, the company generates clean power through innovative geoscience methods, aiming to provide a dispatchable foundation for a 100% clean energy future.

Terabase Energy

Series B in 2022
Terabase Energy is a provider of automation and digital deployment solutions for utility-scale solar projects. The company develops software and services, including a cloud-based artificial intelligence project development platform that supports collaborative digital models, and offers technical advisory and engineering services. It markets an automation platform that integrates software, automation, and advanced construction techniques to help solar developers and EPC firms optimize project planning, streamline deployment, improve site efficiency, and manage costs, enabling scalable solar installations. The solutions are used by more than 400 engineering, procurement, and construction firms, developers, and independent power producers in 28 countries. Terabase Energy is based in Berkeley, California, with an additional office in Melbourne, Australia.

Blue Frontier

Series A in 2022
Blue Frontier develops sustainable air conditioning technology with integrated energy storage. Founded in 2018 and based in Fort Lauderdale, Florida, the company aims to reduce energy consumption compared with conventional systems. Its technology supports HVAC-as-a-Service models and stores electricity, enabling operation during periods when renewable energy is abundant without compromising cooling service. The system uses less electricity than traditional air conditioners, contributing to lower utility costs and improved grid resilience for clients.

Source

Series D in 2022
Source is a developer and manufacturer of solar-powered devices that extract drinkable water from the atmosphere. Its hydro panel technology uses advanced materials science to pull water from even the driest conditions and mineralize it for delivery to taps, enabling clean water access for residential, commercial, industrial, and community use. The company was founded in 2014 and is headquartered in Scottsdale, Arizona.

ReMo Energy

Seed Round in 2022
ReMo Energy is a company that specializes in the innovative manufacturing of industrial materials by utilizing renewable energy instead of fossil fuels. It focuses on developing distributed-scale green ammonia plants that produce nitrogen fertilizers from renewable electricity, air, and water. By employing predictive modeling and a novel approach to vegetation development, ReMo Energy effectively harnesses local renewable energy sources to create green chemicals. This approach addresses the challenges of food security and climate change while optimizing the use of distributed, intermittent renewable energy resources.

Terra CO2 Technologies

Series A in 2022
Terra CO2 Technologies produces low-carbon alternatives for cement replacement. It converts locally sourced feedstocks into high-performing, cost-competitive cementitious materials, aiming to reduce emissions in the construction industry.

H2SITE

Series A in 2022
H2SITE develops on-site hydrogen production technology that enables compact systems for generating hydrogen at customer sites. The technology supports low-carbon hydrogen production and integrates production, transportation, and storage, making hydrogen transport more viable and helping unlock hydrogen markets. The company aims to help businesses reduce transportation costs and energy waste by providing efficient, on-site hydrogen solutions.

Fleetzero

Venture Round in 2022
Founded in Auburn, Alabama in 2021, Fleetzero develops a fleet of electric cargo ships to decarbonize ocean freight. Its vessels offer lower operational costs and higher reliability than traditional fossil-fuel ships.

C-Zero

Venture Round in 2022
C-Zero is a Santa Barbara-based hard-tech startup developing technology to decarbonize natural gas. It uses high temperatures to split methane into hydrogen and solid carbon, enabling emission reduction in industries like ammonia production, electric generation, and fuel cell vehicles.

Turntide Technologies

Venture Round in 2022
Turntide Technologies specializes in sustainable technologies that reduce energy consumption and operating costs in buildings, agriculture, and electric transport. It has developed an efficient electric motor system based on switched reluctance technology, managed by cloud software and connected to precise controls via IoT. The company aims to eliminate the roughly 25% of global electricity wasted by legacy motors, accelerating the transition from fossil fuels toward renewable energy. Founded in 2013 and headquartered in Sunnyvale, California, Turntide's solutions target improvements in space conditioning, maintenance, and refrigeration energy use.

Zap Energy

Series C in 2022
Zap Energy, Inc. is a Seattle-based company that specializes in the design and manufacture of sheared-flow stabilized Z-Pinch fusion reactors for power generation. Founded in 2017, the company focuses on developing compact and scalable fusion technology that offers low-carbon, cost-effective, and flexible energy solutions. Unlike conventional fusion methods, Zap Energy's approach utilizes electric current to create magnetic fields that confine and compress plasma, enhancing the stability and efficiency of the fusion process. This innovative technology aims to provide sustainable energy while requiring less capital investment compared to traditional fusion systems.

Mangrove Lithium

Series B in 2022
Mangrove Lithium is a Vancouver-based company that has developed a modular platform for producing battery-grade lithium hydroxide and carbonate efficiently from diverse input streams. Its scalable solution can be co-located with upstream producers or manufacturers, enabling cost-effective conversion of waste brines to chemicals and desalinated water.

Mission Zero

Seed Round in 2022
Mission Zero develops air capture technology that removes carbon dioxide from the atmosphere and concentrates it for sequestration pathways. The system is designed to recover historic CO2 at any scale by pulling ambient air, dissolving the carbon in a water solvent, and releasing it as a gas through electrodialysis, enabling CO2 users, project developers, engineers, and scientists to convert historic carbon waste into climate value.

Source

Series D in 2022
Source is a developer and manufacturer of solar-powered devices that extract drinkable water from the atmosphere. Its hydro panel technology uses advanced materials science to pull water from even the driest conditions and mineralize it for delivery to taps, enabling clean water access for residential, commercial, industrial, and community use. The company was founded in 2014 and is headquartered in Scottsdale, Arizona.

Brimstone

Series A in 2022
Brimstone develops a carbon-negative process for producing ordinary portland cement and supplementary cementitious material. Its technology uses calcium silicate rock instead of limestone, delivering identical products at scale while significantly reducing CO2 emissions.

SparkMeter

Venture Round in 2022
SparkMeter develops smart electricity metering systems and grid management software for underserved markets. Its products include residential and commercial meters, along with software solutions that enhance grid efficiency, enable prepaid billing, and facilitate remote monitoring. Founded in 2012, SparkMeter operates from Washington D.C. and Nairobi, Kenya.

Heirloom

Series A in 2022
Heirloom is a carbon capture company developing direct air capture technology that accelerates the natural absorption of carbon dioxide. Its approach uses a limestone-based process to increase CO2 uptake and stores the captured carbon permanently underground, powered by renewable energy. The company also applies carbon capture and utilization techniques to enhance natural CO2 removal. By offering a scalable, renewable-energy driven solution, Heirloom aims to help businesses meet sustainability goals with a cost-effective path to significant carbon removal.

Our Next Energy

Series A in 2022
Our Next Energy is a developer and manufacturer of advanced energy storage technology, established in 2020 and headquartered in Novi, Michigan. The company specializes in innovative battery chemistries that prioritize safety and utilize sustainable raw materials, aiming to create a reliable and cost-effective supply chain. By employing a dual-chemistry design, Our Next Energy enhances energy density and safety, catering to mobility and grid storage applications. This approach enables original equipment manufacturers to meet market range expectations while promoting access to sustainable power solutions.

Antora Energy

Series A in 2022
Antora Energy specializes in delivering reliable, zero-carbon industrial heat and power solutions to heavy industries. The company's core technology involves thermal energy storage that absorbs excess solar and wind electricity, converting it into usable heat for industrial processes.

Rondo Energy

Series A in 2022
Rondo Energy is a company focused on providing zero-carbon industrial heat solutions. Its innovative Rondo Heat Battery captures low-cost renewable electricity and converts it into continuous high-temperature heat, allowing industrial processes to operate with reduced energy costs and eliminated emissions. By enabling clients to transition to renewable energy sources, Rondo Energy supports the decarbonization of industrial operations, contributing to a more sustainable future.

Verdox

Venture Round in 2022
Verdox is dedicated to reversing climate change through the development and deployment of advanced technology. The company’s proprietary electro-swing process, developed at MIT, enables carbon dioxide and other acid gases to be captured with up to 80% less energy and 70% less cost than conventional approaches.

H2Pro

Series B in 2022
Founded in 2019, H2Pro develops innovative water-splitting technology for producing hydrogen fuel. Its proprietary E-TAC method decouples hydrogen and oxygen evolution reactions, enabling efficient and sustainable green hydrogen production.

Sustaera

Series A in 2021
Founded in 2021 and headquartered in Cary, North Carolina, Sustaera develops direct air capture technology. This innovative solution uses renewable energy to remove carbon dioxide directly from the air, offering scalable, low-cost systems for global clients aiming to restore the carbon balance.

Stoke Space

Series A in 2021
Stoke Space is a company dedicated to developing a fully reusable medium-lift rocket known as Nova, which aims to provide cost-effective and sustainable access to space. The company focuses on creating rockets that deliver satellites in a manner that is low-cost, on-demand, and capable of daily flights. By emphasizing environmental stewardship, Stoke Space seeks to significantly reduce atmospheric impact and facilitate dynamic space operations. With its vertically integrated design and manufacturing capabilities, the company is positioned to accelerate the growth of the space economy while promoting sustainable practices in the aerospace industry.

Mangrove Lithium

Series A in 2021
Mangrove Lithium is a Vancouver-based company that has developed a modular platform for producing battery-grade lithium hydroxide and carbonate efficiently from diverse input streams. Its scalable solution can be co-located with upstream producers or manufacturers, enabling cost-effective conversion of waste brines to chemicals and desalinated water.

TS Conductor

Series A in 2021
TS Conductor specializes in advanced electrical transmission conductors. Utilizing a carbon-fiber-composite core instead of steel, their products are lighter, stronger, and more efficient, carrying higher current with reduced energy loss.

Our Next Energy

Series A in 2021
Our Next Energy is a developer and manufacturer of advanced energy storage technology, established in 2020 and headquartered in Novi, Michigan. The company specializes in innovative battery chemistries that prioritize safety and utilize sustainable raw materials, aiming to create a reliable and cost-effective supply chain. By employing a dual-chemistry design, Our Next Energy enhances energy density and safety, catering to mobility and grid storage applications. This approach enables original equipment manufacturers to meet market range expectations while promoting access to sustainable power solutions.

ESS

Post in 2021
Founded in 2011, ESS provides safe, cost-effective long-duration energy storage solutions for commercial & industrial applications, utilities, microgrids, and off-grid systems. Their patented iron-electrolyte flow cell design enables reliable clean energy integration.

LuxWall

Venture Round in 2021
LuxWall is a building materials company that designs and manufactures vacuum-insulated glass, a transparent insulation material that reduces heating and cooling losses and improves building energy efficiency. Its vacuum-insulated glass supports energy standards for commercial and residential buildings and uses technology aimed at enabling greater thermal performance. Founded in 2020 and headquartered in Ypsilanti, Michigan, LuxWall seeks to advance sustainable construction and has indicated a potential to reduce global carbon emissions by more than 0.5 gigatonnes per year, highlighting its environmental impact.

Yard Stick

Seed Round in 2021
Yard Stick develops a handheld device that measures soil carbon levels in real-time. This enables evidence-based regenerative farming practices, improving soil health, increasing farmer income, and combating climate change by sequestering carbon.

M2X Energy

Series A in 2021
M2X Energy is a technology company that offers automated systems for converting methane into valuable products. Its innovative, non-catalytic partial-oxidation reformer can process various feedstocks like landfill gas and biogas, helping businesses reduce greenhouse gas emissions by minimizing waste.

Reactive Technologies

Venture Round in 2021
Reactive Technologies LTD is an energy technology company based in London, United Kingdom, focused on facilitating the transition to clean energy through innovative solutions for grid operators, electric utilities, and renewable asset owners. The company offers a range of advanced technologies, including GridMetrix, which provides real-time inertia measurements for transmission system operators, and GridMetrix for distribution network operators, which measures system strength and helps manage constraints. Its Tradenergy platform enhances forecasting, risk management, and optimization for energy flexibility, while the Dynamic PPA feature allows generators to capitalize on market opportunities and mitigate price risks. Reactive Technologies is recognized for its groundbreaking Grid-Sonar™ technology, which delivers precise data on grid operations, thereby improving planning and maximizing electricity supply utilization. Established in 2010, the company has expanded its reach internationally, with commercial offices in the UK, USA, and Australia, and an R&D center in Finland.

44.01

Seed Round in 2021
44.01 specializes in CO2 removal from the atmosphere by accelerating the natural weathering process in peridotite rocks, converting captured CO2 into stable minerals.

Redwood Materials

Series C in 2021
Founded by JB Straubel in Nevada, Redwood Materials specializes in recycling lithium-ion batteries and electronics. It develops processes to extract and refine key materials like lithium, nickel, cobalt, and copper, creating a circular supply chain for electric vehicles and energy storage systems. The company aims to reduce environmental impact and lower production costs by recycling end-of-life products.

Natel Energy

Series B in 2021
Founded in 2005, Natel Energy designs, builds, and sells restoration hydro turbines for generating renewable electricity from moving water across drops. Its turbines can be installed in various settings, including retrofit of existing turbines, non-power dams, irrigation canals, and new stream reach developments. The company also offers digital services like HydroForecast, which uses satellite imagery and machine learning for hydrologic modeling and power generation forecasting.

Turntide Technologies

Convertible Note in 2021
Turntide Technologies specializes in sustainable technologies that reduce energy consumption and operating costs in buildings, agriculture, and electric transport. It has developed an efficient electric motor system based on switched reluctance technology, managed by cloud software and connected to precise controls via IoT. The company aims to eliminate the roughly 25% of global electricity wasted by legacy motors, accelerating the transition from fossil fuels toward renewable energy. Founded in 2013 and headquartered in Sunnyvale, California, Turntide's solutions target improvements in space conditioning, maintenance, and refrigeration energy use.

CubicPV

Venture Round in 2021
CubicPV is a solar manufacturing company that focuses on producing wafers and tandem modules using advanced silicon and perovskite technologies. The company develops innovative semiconductor combinations for tandem modules, which enhance energy harvesting by utilizing two different light absorbers, thus improving efficiency across a broader spectrum of sunlight. This technology aims to reduce the cost of solar electricity to be competitive with conventional energy sources, such as coal. By manufacturing silicon wafers directly from the silicon melt, CubicPV streamlines the production process, eliminating several steps and effectively doubling the yield. This approach not only lowers the cost of clean electricity but also minimizes the carbon footprint associated with solar panel production, supporting the growing global demand for sustainable energy solutions.

Electric Hydrogen

Series A in 2021
Electric Hydrogen is a company focused on deep decarbonization by developing low-cost, high-efficiency systems for producing fossil-free hydrogen. The company targets industrial sectors such as ammonia and steel production, which contribute significantly to global greenhouse gas emissions. By rethinking electrolysis technology from scratch, Electric Hydrogen aims to make clean hydrogen competitive with traditional methods in terms of cost and scale. Their advanced PEM (Proton Exchange Membrane) technology uses renewable electricity to generate clean hydrogen gas, reducing industrial pollution and dependence on fossil fuels. The company's leadership team brings extensive experience from pioneering clean energy companies like Tesla and First Solar, positioning Electric Hydrogen as a strong contender in the quest for zero-emission industrial processes.

WeaveGrid

Series A in 2021
WeaveGrid is a technology company focused on facilitating the integration of electric vehicles (EV) with the power grid. By employing machine learning, optimization, and predictive analytics, WeaveGrid's software addresses the challenges associated with EV-grid integration for utility companies. This innovative solution not only enhances the incorporation of renewable energy resources but also aims to reduce costs for utility customers. The company's efforts support the broader goals of decarbonization in the transportation and power sectors, enabling utilities to safely and economically adapt to the growing demand for electric vehicles.

Heirloom

Pre Seed Round in 2021
Heirloom is a carbon capture company developing direct air capture technology that accelerates the natural absorption of carbon dioxide. Its approach uses a limestone-based process to increase CO2 uptake and stores the captured carbon permanently underground, powered by renewable energy. The company also applies carbon capture and utilization techniques to enhance natural CO2 removal. By offering a scalable, renewable-energy driven solution, Heirloom aims to help businesses meet sustainability goals with a cost-effective path to significant carbon removal.

Fervo Energy

Series B in 2021
Founded in 2017, Fervo Energy specializes in developing and operating geothermal assets using proprietary technology. Based in San Francisco, the company generates clean power through innovative geoscience methods, aiming to provide a dispatchable foundation for a 100% clean energy future.

Solidia Technologies

Venture Round in 2021
Solidia Technologies is an advanced materials company that develops low‑energy processes for building and construction products. Its proprietary technology captures and stores CO₂ in concrete, turning the gas into a useful component of the material. The company’s solutions enable the production of cement, concrete, and stone alternatives that deliver higher performance while reducing energy use and waste. By integrating artificial intelligence into the manufacturing workflow, Solidia improves quality control, cuts material waste, and lowers carbon emissions, supporting a more sustainable construction industry. Founded in 2008 and headquartered in Piscataway, New Jersey, the firm serves the concrete and cement sectors worldwide.

Turntide Technologies

Venture Round in 2021
Turntide Technologies specializes in sustainable technologies that reduce energy consumption and operating costs in buildings, agriculture, and electric transport. It has developed an efficient electric motor system based on switched reluctance technology, managed by cloud software and connected to precise controls via IoT. The company aims to eliminate the roughly 25% of global electricity wasted by legacy motors, accelerating the transition from fossil fuels toward renewable energy. Founded in 2013 and headquartered in Sunnyvale, California, Turntide's solutions target improvements in space conditioning, maintenance, and refrigeration energy use.

Malta

Series B in 2021
Malta is a developer of industrial-grade, grid-scale electro-thermal energy storage technology. The system captures energy from wind, solar, and fossil generators, converts electrical energy into thermal energy by creating a temperature difference, stores heat in molten salt, and reconverts it to electricity with a heat engine to be dispatched to the grid when needed. The technology enables long-duration energy storage, helping mitigate wind and solar curtailment and improve the matching of generation and demand, addressing bottlenecks in distribution and transmission and supporting affordable, reliable electricity on demand. Founded in 2018 and based in Cambridge, Massachusetts, Malta's solution targets grid operators and energy players seeking to balance supply and demand with grid-scale storage.

Yard Stick

Pre Seed Round in 2021
Yard Stick develops a handheld device that measures soil carbon levels in real-time. This enables evidence-based regenerative farming practices, improving soil health, increasing farmer income, and combating climate change by sequestering carbon.

Bloom Biorenewables

Seed Round in 2021
Bloom Biorenewables Ltd is a Swiss company established in 2019, specializing in the development of innovative technologies that convert wood and agricultural waste into renewable materials as substitutes for petroleum-based products. The company focuses on producing bio-based materials for various sectors, including fragrances, plastics, and textiles, thereby offering sustainable alternatives to fossil fuels. By introducing a novel approach to the production of biorenewable products and fuels, Bloom Biorenewables aims to make a significant impact in promoting the use of sustainable resources and addressing climate change challenges.

Dandelion Energy

Series B in 2021
Dandelion Energy, Inc. is a Palo Alto, California-based company founded in 2017 that specializes in affordable geothermal heating and cooling solutions. The company replaces traditional air conditioning and heating systems with an innovative home geothermal system that utilizes a powerful heat pump and underground pipes to transfer heat between the earth and the residence. This system is designed to harness thermal energy from below the earth's surface to regulate indoor temperatures and provide hot water, allowing homeowners to transition from conventional heating fuels to a more sustainable geothermal alternative. Dandelion Energy is committed to making renewable heating and cooling accessible and cost-effective for homeowners.
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