Founded in 2010, EIT InnoEnergy is a leading European innovation engine focused on Sustainable Energy. It invests in early-stage climate tech and energy companies across Europe and the US, providing equity minority investments and added value services to de-risk projects.

European Bank for Reconstruction and Development finances projects and provides advisory services to the public and private sectors. It supports new ventures and expansion in existing companies through project financing, loans, and equity or quasi-equity investments, including equity funds and guarantees, and it partners with private entities to invest across sectors such as banking, energy, manufacturing, infrastructure, information technology, and services. The bank also helps publicly owned entities privatize and restructure municipal services and engages in policy reform dialogue and advisory services, along with trade finance and loan syndication. Founded in 1990 and headquartered in London, it operates across regions including Southeastern and Central Europe, the Baltic States, Eastern Europe and the Caucasus, Central Asia, and parts of the Middle East and Africa, aiming to foster market-oriented change and private sector development by mobilizing capital for sustainable investments. It has invested more than €130 billion in over 5,200 projects.

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.

Energy Impact Partners is a New York-based private investment firm focused on the energy transition. It backs entrepreneurs and established energy and industrial companies across venture, growth, credit and infrastructure, with an emphasis on energy efficiency, clean energy generation, smart grids, energy storage, distributed generation, and related digital and data-enabled services. The firm collaborates with partners to accelerate innovation in smart buildings, mobility, cybersecurity for energy systems, and comprehensive energy services, often pursuing co-investments. Since its founding in 2015, Energy Impact Partners has built a global footprint with offices in New York, San Francisco, Palm Beach, Cologne and London, enabling investments across North America and Europe. It seeks to align investments with environmental impact and scalable infrastructure, supporting the transition to sustainable energy and resilient energy systems.

Established in 2020, the European Innovation Council supports innovative startups and researchers with promising ideas, focusing on early-stage companies with positive environmental, social, or governance impacts. It co-invests alongside private investors.

Lowercarbon Capital is a venture capital firm founded in 2018 and based in Jackson, Wyoming, that funds research and invests in companies developing technologies to reduce CO2 emissions and advance decarbonization, with a focus on energy, transportation, industrial materials, and agriculture.

Founded in Singapore in 2017, Antler is an early-stage venture capital firm that invests globally. It focuses on backing exceptional founders from day one, offering a global community network of co-founders, talent, advisors, expansion support, and capital across various sectors such as technology, healthcare, finance, consumer goods, and more.

Chevron Technology Ventures is the corporate venture capital arm of Chevron Corporation, focused on scouting, funding, testing, validating, and integrating emerging technologies into Chevron's core businesses. Founded in 1999 and based in Houston, with a presence in California, it identifies early-stage companies across the United States and pursues opportunities in areas such as industrial decarbonization, emerging mobility, energy decentralization, circular economy, water management, advanced materials, hydrogen infrastructure, sensors, and related digital technologies. The team collaborates with startups to develop and commercialize technologies that can enhance Chevron's operations, reduce costs, and improve performance, acting as an innovation partner that helps Chevron adopt new capabilities while aligning with the company's strategy.

Founded in 1995, SOSV is a global venture capital firm headquartered in New Jersey. It focuses on seed-to-growth stage investments in deep tech innovations, primarily in bio-tech/life sciences and hardware/robotics sectors, with a commitment to human and planetary health.

Shell Ventures is the strategic investment arm of Shell, focusing on identifying and adopting innovative technologies to enhance commercial advantage. It invests in promising tech companies, joint ventures, and venture capital funds across sectors such as power, mobility, emission management, digital, and resources.

Founded in 2019, MCJ is a venture capital firm based in Boston, Massachusetts. The company focuses on investing in technology startups that drive industrial transformation and infrastructure resilience, aiming to make industries cleaner, more profitable, and more resilient.

Congruent Ventures is a venture capital firm founded in 2017 and based in the San Francisco Bay Area. It specializes in early-stage investments in climate technology and sustainable development across North America, with a focus on mobility and urbanization, energy transition, food and agriculture, and sustainable production and consumption. The firm seeks technology companies that improve energy and resource efficiency and partners with teams capable of scaling hardware, software, or services. Its portfolio spans sectors such as transportation, consumer products, industrials, IT software, and related climate tech areas, reflecting a commitment to backing ventures that deliver measurable environmental impact.

Prelude Ventures is a San Francisco-based venture capital firm established in 2013, dedicated to investing in early-stage startups that aim to address climate change. The firm focuses on sectors such as advanced energy, food and agriculture, transportation, logistics, advanced materials, manufacturing, and advanced computing. By supporting innovative businesses in these areas, Prelude Ventures seeks to foster the development of the next generation of companies that can significantly impact environmental sustainability and contribute to a more sustainable future.

Helen Ventures is the corporate venture capital arm of Helen, founded in 2019 and headquartered in Helsinki, Finland. It invests from its balance sheet in early and growth‑stage startups across Europe and Israel, with a focus on energy, e-mobility, circular economy, decarbonization, and digital solutions for the energy sector. The firm targets renewable energy technology, smart energy solutions, distributed energy systems, and related digital platforms, seeking to accelerate the adoption of transformative technologies in collaboration with customers and industry experts. By supporting startups that advance sustainable energy and related digital capabilities, Helen Ventures aims to help create new energy era solutions accessible to customers and partners.

SFC Capital is a United Kingdom based venture capital firm founded in 2012 that focuses on early-stage investments, including pre-seed and seed rounds, in sectors such as software, technology, e-commerce, consumer products, enterprise solutions, green technology, medical technology, and hospitality. It backs UK startups through an Angel Network and seed funds, providing capital and guidance and offering access to SEIS- and EIS-qualifying investment opportunities. The firm is described as a leading seed investor in the UK.

Founded in 2011, DCVC is a venture capital firm based in Palo Alto, California. The firm invests in early-stage companies utilizing deep tech to solve complex problems across sectors such as artificial intelligence, exascale computing, climate, engineering, materials science, robotics, space, water, biology, defense, and security.

Founded in 2003, Union Square Ventures is a venture capital firm based in New York. It specializes in early to late-stage investments in internet-focused companies, with a focus on web services creating large networks and innovative use of information technology across industries like media, marketing, fintech, climate tech, and healthcare.

BP Ventures is a venture capital firm established in 2007, investing in private technology companies to accelerate innovation across the energy sector. With over $400 million invested across more than 40 entities and over 200 co-investors, BP Ventures focuses on Oil & Gas Value Chain, Low Carbon Technologies & Fuels, and Energy Usage & Trading, delivering near-term business value while backing breakthrough innovations for a sustainable future.

Clean Energy Ventures is a venture capital firm focused on seed and early-stage investments in climate technology and advanced energy innovations. The firm targets technologies and business model innovations that address climate change and greenhouse gas emissions, with emphasis on energy storage, grid connectivity, renewable energy production, clean transportation, and the water-energy nexus. It seeks scalable solutions ready for commercial deployment and supports them with capital and guidance to accelerate growth. Headquartered in Boston, Massachusetts, Clean Energy Ventures is the venture capital arm of Clean Energy Venture Group and concentrates its activity in the United States and Canada, drawing on the group’s network and operational experience to help portfolio companies scale.

Founded in Berlin, Germany in 2020, Vireo Ventures is a venture capital firm focusing on seed and pre-seed stage investments. It supports European tech startups driving electrification and digitalization, taking a long-term view and providing extensive support to its portfolio companies.

MassVentures is a venture capital firm based in Waltham, Massachusetts, established in 1978 as a quasi-public corporation by the Massachusetts Legislature. The firm focuses on providing seed and early-stage funding to high-growth startups, facilitating their transition from concept to commercialization. MassVentures invests primarily in sectors such as information technology, healthcare, cybersecurity, e-commerce, mobile, manufacturing, and robotics. With a governance structure that includes an independent Board of Directors and management by experienced venture capitalists, MassVentures leverages the state's entrepreneurial spirit and innovation centers to support the Massachusetts innovation economy. The firm also offers accelerator programs to further assist emerging companies in their growth journey.

Khosla Ventures is a California-based venture capital firm founded in 2004 by Vinod Khosla. It provides capital and strategic guidance to startups across stages, focusing on technology-driven companies in areas such as artificial intelligence, climate and sustainability, enterprise software and services, fintech, digital health, medical technology and diagnostics, therapeutics, consumer products, and frontier technologies. The firm backs bold ventures with the potential to disrupt markets and improve lives, supporting companies from early to growth stages and working closely with entrepreneurs to apply science, technology and innovative business models. While primarily investing in North American technology companies, Khosla Ventures pursues opportunities globally and emphasizes experimentation and impact alongside financial returns. The firm also maintains related impact initiatives that support entrepreneurs addressing socio-economic challenges in emerging markets.

Energy & Environment Investment, Inc. is a Tokyo-based impact investment firm founded in 2006, specializing in the clean technology sector. As Japan's first venture capital firm dedicated to this area, it aims to support promising ventures by providing both financial resources and strategic guidance. The firm is comprised of experienced professionals who have a strong background in founding and managing companies within the venture capital landscape. By focusing on the environment and energy sectors, Energy & Environment Investment seeks to foster innovation and sustainable practices in clean technology, contributing to the broader goals of environmental sustainability and energy efficiency.

High-Tech Gründerfonds Management GmbH is a venture capital firm based in Bonn, Germany, specializing in early-stage investments in high-tech startups. Established in 2005, the firm focuses on technology-driven companies across various sectors, including information and communication technology, life sciences, healthcare, automation, and cleantech. HTGF typically invests in companies that have been operational for no more than one year, aiming to contribute up to €0.6 million in initial funding and up to €3 million in follow-on financing. The firm seeks a minority stake, generally around 15%, and provides a subordinated loan convertible into equity, with deferred interest for up to four years to support liquidity. With a total investment volume of approximately €895.5 million across three funds, HTGF has successfully supported over 500 startups and attracted more than €2 billion in follow-on investments from external sources. The firm's investors include notable public and private entities, underscoring its role as a key player in fostering innovation and growth within the German startup ecosystem.

Mitsubishi UFJ Capital is a venture capital firm based in Tokyo, with additional offices in Osaka and Nagoya, founded in 1974. It concentrates on seed to development stage and startup investments across healthcare, biotech, information technology, electronics, high technology, life sciences, fintech, ICT, SaaS, and AI sectors. The firm targets opportunities in Japan and with relevance to the Japanese market, and it participates in investment syndication for Japanese investments to support entrepreneurs and innovation within the domestic economy.

Founded in Berlin, Germany, AENU is an impact fund driving systemic transformation in venture capital by focusing on long-term investments in early-stage European climate-tech and social impact companies.

Founded in 2018, Climate Capital is a venture capital firm based in San Francisco. It invests in companies that directly or indirectly reduce global greenhouse gas emissions across sectors such as energy, transportation, and agriculture.

Founded in 2009 and based in New York City, BoxGroup is an early-stage investment fund focusing on pre-seed to Series A rounds. It invests globally, with a primary focus on New York City, Silicon Valley, and Los Angeles. The firm typically allocates between $50,000 and $250,000 per investment across various sectors including consumer, enterprise, fintech, healthcare, life science, marketplace, synthetic biology, and climate.

National Grid Partners (NGP) is the investment arm of National Grid, focusing on investing in and developing innovative technologies and business models in the energy sector. With a mission to drive the future of energy, NGP seeks out opportunities to collaborate with startups and entrepreneurs to transform the industry and create sustainable solutions for a cleaner, more efficient energy system. By leveraging their expertise and resources, NGP aims to support and accelerate the growth of innovative companies that are shaping the future of energy.

Speedinvest is a venture capital firm based in Vienna, with offices in Berlin, Paris, London, Munich, and San Francisco, that focuses on early-stage technology investments across Europe, including Central and Eastern Europe. The firm backs seed to early growth rounds in areas including deep tech, fintech, health, industrial tech, marketplaces, consumer tech, software-as-a-service, and network effects, with a platform philosophy and hands-on support via an in-house Platform+ team that provides growth marketing, human resources, US business development, and networking assistance from day one. Typical investments range from a few hundred thousand euros up to about three million euros, with a preference for minority stakes up to around 20% and for taking co-entrepreneurial operational roles for six months to a year. Speedinvest was founded in 2011 and is known for combining capital with hands-on operational support to help portfolio companies scale.

SET Ventures is an Amsterdam-based venture capital firm founded in 2007 that invests in European energy and renewable sector companies across early to growth stages. It backs digital technology-enabled solutions aimed at carbon-free energy systems, including energy generation, distribution and storage, energy efficiency, and smart energy applications in buildings, industry, mobility, and infrastructure. The firm targets investments in technology-enabled clean energy and sustainability initiatives, often with a focus on smart grid, energy storage, and EV/green building applications, and seeks to support portfolio companies with strategic guidance, including board participation. Typical check sizes range from approximately €0.5 million to €6 million per company over the life of participation. SET Ventures concentrates on Europe and prioritizes companies that combine software and hardware components to create scalable energy solutions.

EDP Ventures is the corporate venture arm of EDP Energias de Portugal. It targets seed, series A and early-stage startups operating in energy-related sectors, including energy efficiency, energy storage, smart grids, electric mobility, and information technology. The firm invests across regions, typically providing €0.5 million to €5 million in early-stage rounds. Based in Lisbon, Portugal, EDP Ventures maintains an additional office in Sao Paulo, Brazil. By backing high-potential startups, it seeks to accelerate innovation and adoption of clean energy and digital technologies within the broader energy ecosystem.

Founded in 2000, General Catalyst is a venture capital firm specializing in early-stage and growth equity investments. It focuses on accelerating ideas, careers, and companies towards success by providing ongoing momentum and mentorship based on deep experience.

Founded in 2013, Powerhouse is an innovation firm that supports seed-stage startups developing software to accelerate decarbonization in global energy and mobility systems. It offers a 6-month program, investing $50,000 to $250,000 for equity stakes.

NGP Energy Capital Management is a private equity and venture capital firm focusing on energy investments. Founded in 1988 and headquartered in Irving, Texas, with offices in Houston, London, Santa Fe, and Stamford, it manages a family of energy-focused funds. The firm invests across the energy value chain, including oil and gas exploration and production, midstream, oilfield services, energy efficiency, alternative energy, natural gas gathering and processing, and power technology, as well as related areas such as water resources, food and agriculture, and coastal protection. It targets a range of capital events from seed and startup funding to growth equity, middle-market and later-stage buyouts, and may co-invest in direct oil and gas property interests alongside portfolio companies. Typical investments span from a few million to several hundred million dollars, with a North American focus and selective international opportunities. The firm aims to partner with management teams to support growth and help navigate the challenges of the energy industry.

Established in 2001, Sustainable Development Technology Canada (SDTC) is a Canadian organization that funds and supports innovative cleantech projects. It focuses on moving groundbreaking technologies to market, creating jobs, driving economic growth, and promoting environmental benefits. SDTC operates independently but collaborates with various stakeholders from private industry, academia, and governments.

Founded in 2017, Starlight Ventures is a venture capital firm based in Miami, Florida. It invests globally in early-stage companies addressing global challenges through breakthrough science and technology, focusing on areas such as energy transition, synthetic biology, space technology, and novel computing platforms.

Founded in 2013, Third Sphere is a venture capital firm based in Brooklyn, New York. It focuses on investing in early-stage climate action companies, with a track record of over 100 portfolio companies that unlock greenhouse gas reductions and resilience through innovative strategies.

Voyager Ventures is a venture capital firm founded in 2021 with offices in San Francisco and New York. It pursues early-stage investments in climate technology and decarbonization, spanning mobility, energy, materials, food, the built environment, analytics, industrial systems, and carbon removal, typically in pre-seed, seed, and Series A rounds.

Founders Fund is a San Francisco-based venture capital firm that backs science and technology companies across multiple stages, from seed to late-stage. It pursues transformative technologies and follows a founder-friendly investment approach that provides substantial support with minimal interference. The firm invests in ventures solving difficult problems across sectors such as aerospace and transportation, artificial intelligence, advanced computing, energy, healthcare, biotechnology, cybersecurity, fintech, consumer internet, software, robotics, and related technology fields. It has backed notable companies early, including SpaceX, Palantir, and Facebook, reflecting a history of partnering with ambitious founders to scale breakthrough technologies.

Founded in 2019, Zero Carbon Capital is a venture capital firm based in Hampshire, UK. It invests in pre-seed and seed-stage climate tech companies across the UK and Europe, focusing on scientific and hardware innovations that aim to reduce emissions by at least 0.5 gigatons of CO2e per year by 2050.

S2G Ventures is a Chicago-based, multi-stage investment firm focused on fostering innovation across food and agriculture, oceans, and energy. Founded in 2014, it targets late-stage venture and growth investments and maintains a portfolio spanning seed, venture, and growth rounds. The firm backs entrepreneurs delivering market-driven solutions that transform food systems and related sectors, including ingredients, infrastructure and logistics, food safety technology, retail and consumer brands, as well as opportunities in ocean and energy domains. Its objective is to catalyze healthier, sustainable, and locally sourced food systems through investments that cover agricultural products, logistics, and consumer offerings.

Ben Franklin Technology Partners of Southeastern Pennsylvania is a technology-focused capital provider based in Philadelphia, founded in 1982 to advance the region's technology community. The organization funds and supports technology companies across Pennsylvania, especially in information technology, health, and physical sciences, investing substantial capital in early-stage and established ventures. It has invested over 170 million dollars in more than 1,750 regional technology companies and has launched university-industry partnerships to translate scientific discoveries into commercial products, while seeding regional initiatives that strengthen the entrepreneurial ecosystem and create jobs.

Founded in 2020, Future Energy Ventures is a venture capital firm headquartered in Essen, Germany. It invests globally in early-stage startups focusing on digital and digitally enabled technologies within the energy sector.

Braemar Energy Ventures is a New York–based venture capital firm that focuses exclusively on technology and communications opportunities in the energy sector. Founded in the early 2000s by four principals with deep investment, financing, and operating experience in energy, the firm targets early‑stage companies across energy technology, mobility, power, resource revolution, and infrastructure. It helps portfolio companies mature by providing strategic guidance and financing expertise, leveraging industry knowledge to address long‑term challenges and enable management teams to focus on execution and growth as they integrate into the broader energy market.

Alumni Ventures Group is a venture capital firm based in Manchester, New Hampshire, with offices across North America. It provides access to venture investing for individual accredited investors, particularly alumni networks, by offering diversified portfolios of venture opportunities and allowing members to invest alongside fellow alumni in ventures led by peers. The firm backs early-stage and later-stage opportunities across technology, consumer, healthcare, financial services, and other sectors, with a sector- and geography-agnostic approach. It typically invests between $10,000 and $3 million per deal and emphasizes the involvement of alumni connections and an institutional lead investor in opportunities. Alumni Ventures also offers focused funds to broaden participation, enabling accredited investors to access venture portfolios diversified by type, sector, stage, and geography. The model aims to democratize access to venture capital while maintaining rigorous selection standards through alumni networks.

Founded in 2021, Climentum Capital is a venture capital firm based in Copenhagen, Denmark. It invests in European seed and series A climate tech companies, focusing on sustainable, low-carbon, and circular industries.

Founded in Tokyo in 1998, Global Brain is a venture capital firm focusing on seed to late-stage investments across various sectors globally. They have invested in over 300 startups, facilitating 25 IPOs and 61 M&As through hands-on support services.

Chalmers Ventures is a Swedish venture capital firm based in Gothenburg that supports technology-driven companies through coaching, financing and business development. The firm invests across seed, early, and growth stages in Sweden, with programs that include incubation, startup camps and accelerator activities as well as a technology transfer program. It focuses on companies connected to the Gothenburg region and Sweden operating in information technology, communications, new materials, green tech, health tech and biotechnology, and seeks innovative ventures with growth potential. The firm typically makes minority investments and uses a staged funding approach, providing capital through various program phases and through balance sheet investments. It partners with ventures that participate in its programs, helping them advance from explore to scalable stages and achieve commercial success.

EnCap Investments L.P., established in 1988, is a Houston, Texas-based private equity firm focused on the oil and gas industry. It specializes in seed, start-up, emerging growth, and early venture investments, typically allocating between $10 million and $350 million per deal. The firm primarily invests in upstream and midstream oil and gas companies, with a particular interest in natural gas pipelines, processing facilities, and energy infrastructure projects. EnCap also considers investments in the energy transition sector. It operates from offices in Houston and Dallas, Texas.