Echo River Capital focuses on early‑stage water technology companies worldwide, aiming to digitize, decarbonize, and decentralize the water cycle. The firm envisions a future of freshwater harmony with nature, facilitated by technology. It is one of few investors with a narrow focus on smart water technology that addresses global challenges for human health, the environment, and climate resilience.

SOSV is a global venture capital firm based in Princeton, New Jersey, founded in 1995, that focuses on seed to growth investments in deep technology across health, environmental tech, hardware, robotics, and cross border software, with a particular emphasis on Asia. The company runs accelerator style startup development programs, including HAX and IndieBio, which provide facilities, engineering resources, and lab equipment to help founders accelerate product development, acquire customers, and attract later stage funding. SOSV pursues a limited number of high potential startups, offering extensive hands on support to speed commercialization and scale, and aims to back innovations that improve human and planetary health.

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.

Burnt Island Ventures is a venture capital firm founded in 2020 and based in New York City, focused on early-stage investments in B2B, energy, information technology and clean technology/climate tech sectors, and has been described as supporting water entrepreneurship.

Emerald Technology Ventures is a Switzerland-based venture capital firm specializing in clean technology. It targets investments in energy, water, and materials sectors and supports companies from seed through late-stage growth. The firm seeks global opportunities, with a focus on emerging energy technologies, industrial information technology, solar, distributed generation, energy storage, water purification and wastewater treatment, waste recycling, biomass, and related energy conversion technologies. It invests in companies worldwide, with a presence and activity in Europe, Australia, Israel, and North America, and aims to back ventures poised for significant market growth through multiple funding rounds.

SVG Ventures|THRIVE is an investment and accelerator firm based in Los Gatos, California, focused on sustainable agri-food, agritech, food tech, and related supply chains. The company provides support, acceleration, mentorship, validation, and venture-building services to early-stage technology companies, often in collaboration with public and private partners on strategy, innovation and global expansion. It prioritizes climate-smart and ESG-oriented opportunities and backs startups operating in the United States, Canada, and Europe. Since its formation in 2010, SVG Ventures|THRIVE has built a network to help portfolio companies scale through strategic guidance and industry connections.

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.

European Investment Fund (EIF) is a public institution established in 1994 to improve access to finance for Europe's small and medium-sized businesses. It designs and develops venture capital and guarantee instruments to support SMEs and to catalyse private investment, aiming to build a robust European equity ecosystem. EIF engages in venture capital, growth capital, and guarantee operations, backing innovative entrepreneurs primarily in technology and life sciences, as well as across other sectors. Through cornerstone investments and fund participation, EIF seeks to crowd in private investors and stimulate venture activity across Europe. Its equity portfolio has grown substantially, with assets under management exceeding EUR 14 billion, reflecting its broad role in strengthening SME finance and supporting entrepreneurship and growth.

Mazarine Ventures is a technology investor focused on generating social and environmental impact by backing early-stage companies that develop innovations to improve efficiency and mitigate water and wastewater risks. The firm emphasizes solutions that address water-related public health and safety, environmental protection, and business continuity challenges, as well as risks arising from a changing climate. It seeks founders who are ambitious and pragmatic, advancing creative approaches to rapidly translate ideas into scalable technologies.

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.

Chalmers Ventures is a Gothenburg, Sweden-based venture capital firm that supports startups through incubation, seed and early-stage investments, and growth financing. It operates programs such as an incubator, startup camp, accelerator, and technology transfer initiative, and emphasizes a connection to the Gothenburg region and Sweden. The firm focuses on information and communications technology, new materials, environmental engineering, medical technology, and biotechnology, and it conducts balance sheet investments, typically taking minority stakes in participating companies.

Katapult Group is an Oslo-based accelerator and venture firm founded in 2016 that invests in early-stage technology startups, with a focus on climate and ocean-related initiatives. The company operates Katapult Accelerator, a program that supports startups in environmental, societal, and exponential technologies, and Katapult Ocean, an ocean-focused venture initiative. Together, these platforms aim to steward capital and innovation toward sustainable development, aligning impact with technology and fostering multi-stakeholder collaboration.

XPV Water Partners is a Toronto-based impact investment firm founded in 2006 that targets investments in water-related companies and utility enterprises. Its team comprises water entrepreneurs, operators, and investment professionals committed to generating environmental and social impact alongside financial returns. The firm operates globally, seeking opportunities across North America, Europe, the Middle East, and Asia, and focuses on growth and expansion within the water sector.

Serra Ventures is a venture capital firm based in Champaign, Illinois. Founded in 2008, it invests in technology companies at early and growth stages across the United States, with select international activity, focusing on information technology, deep technology, instrumentation, devices, B2B software as a service, and agricultural technologies.

SFC Capital is a United Kingdom-based venture capital firm founded in 2012 that makes early-stage investments in UK startups, including pre-seed and seed rounds. It backs companies across sectors such as software, technology, e-commerce, consumer, enterprise, green tech, medical technology, and hospitality, providing capital plus strategic guidance to support growth and product development. The firm operates a model that combines an angel network with seed funds to back SEIS- and EIS-qualifying businesses, aiming to offer exposure to a diversified portfolio while delivering hands-on support to portfolio companies.

The EBRD is an international financial institution founded in 1990 and headquartered in London that provides project financing and advisory services to support private sector development and transformation in emerging markets. It finances banks, industries, and businesses, supports new ventures and investments in existing companies, and helps privatize and restructure municipal services in publicly owned entities. Through its banking and treasury activities, it offers loans, equity and quasi-equity investments, guarantees, and equity funds for smaller enterprises, along with trade finance and loan syndication. It works with commercial partners to invest in private enterprises across sectors including energy, manufacturing, ICT, infrastructure, agribusiness, and real estate, across Europe, the Middle East and beyond, including a significant footprint in Central and Eastern Europe, the Baltics, and the Caucasus. It provides policy reform dialogue and advisory services to support market modernization, governance, and reform. It has invested over €130 billion in more than 5,000 projects.

The Yield Lab is a venture capital firm and accelerator focused on agtech and agrifood technology. Based in Saint Louis, Missouri, it operates a global network with regional activities in Latin America, Europe and Asia Pacific. The firm provides early-stage investments in agriculture technology startups and supports them through accelerator programs to advance product development, commercialization and scale across the food and farming value chain.

Antler is a global venture capital firm based in Singapore that backs early-stage technology companies. It runs incubation programs and provides a global community of co-founders, access to talent, expert advisors, expansion support, and capital to help startups grow. The firm targets a broad range of sectors, including healthcare, finance, software, energy, consumer and B2B technologies, and operates through regional programs across Europe, the United States, the United Kingdom, Southeast Asia, India, Africa, and beyond.

MassVentures is a Massachusetts-based venture capital firm that provides seed and early-stage funding to high-growth startups in the Massachusetts innovation economy, helping concepts move from idea to commercialization. Founded in 1978 as a quasi-public corporation by the Legislature of the Commonwealth, it is governed by an independent board and managed by experienced venture investors. The firm focuses on information technology, healthcare, cybersecurity, e-commerce, mobile, manufacturing, and robotics sectors in Massachusetts and operates accelerator programs to support portfolio companies. MassVentures leverages the state's entrepreneurial ecosystem, educated workforce, and centers of innovation to back early-stage ventures.

British Design Fund is a London-based venture capital firm that invests in early-stage, well-designed product companies in the United Kingdom. The firm focuses on IP-backed hardware innovations that can positively impact society and the environment, supporting entrepreneurs with scalable products to accelerate growth and create long-term value. By backing innovative designers and engineers, British Design Fund aims to nurture stand-out businesses across the UK, providing strategic capital and guidance to help them reach commercialization and scale while reinforcing responsible design and sustainability.

KAUST Innovation Ventures is a venture capital firm established in 2010 and located in Thuwal, Saudi Arabia. The firm focuses on fostering the emerging Saudi technology ecosystem by making seed and early-stage investments in high-tech startups across various sectors, including energy and environment, food and water, advanced materials, robotics, information and communications technology, and healthcare. By acting as a long-term strategic partner, KAUST Innovation Ventures supports its portfolio companies through mentorship and acceleration programs offered by its Entrepreneurship Center. The firm aims to cultivate an innovation-driven investment community and attract both local and international investors to contribute to the growth of innovative technologies in the region.

PureTerra Ventures is an Amsterdam based investment firm founded in 2017 that specializes in growth and expansion investments in water technology companies. The firm concentrates on backing disruptive water technologies and related sectors such as agriculture and water utilities, and pursues global opportunities by supporting portfolio companies across multiple regions with capital and strategic guidance. Through its focus on water and waste, PureTerra seeks to generate scalable solutions with environmental and social impact while helping companies scale internationally.

Clean Energy Ventures is a Boston-based venture capital firm that invests in seed- and early-stage climate technology startups across North America, Europe and Israel. It focuses on advancing energy storage, grid connectivity, renewable energy production, clean transportation, and the water–energy nexus, supporting technologies and business models with scale potential to reduce greenhouse gas emissions. The firm backs companies that address climate change through market-driven approaches and seeks to accelerate commercialization of disruptive clean energy innovations.

IP Group is a London-based venture capital firm that focuses on commercialising intellectual property from research-intensive institutions. It creates value by identifying early-stage IP, developing it into commercially viable opportunities, and forming strategic partnerships to support portfolio companies. The firm provides capital, strategic guidance, and industry insight to science- and technology-based businesses, with emphasis on clean technology, life sciences, and deep tech. With more than twenty years of experience, IP Group supports the growth of science and technology companies from inception toward scale, helping translate research into market-ready products and accelerate their impact.

Almi Invest is Sweden’s leading early-stage venture capital firm, investing in scalable startups across sustainability, industry, technology, and life sciences. It supports companies from pre-seed to Series A and co-invests with independent private investors to accelerate innovation and long-term success. The firm emphasizes active ownership, providing strategic guidance, board participation, and access to a broad investor network to help startups scale responsibly. Almi Invest operates as part of the Almi Group and is funded by the European Regional Development Fund, Almi AB, and regional partners, reflecting its public-private model. While focused on Sweden, its portfolio spans diverse sectors, with a mission to drive economic growth and environmental progress by backing entrepreneurs who create tangible impact.

SDIC Innovation Investment Management is the private equity and venture capital arm of State Development & Investment Corp. It makes investments across technology and manufacturing sectors, including mobile internet, internet of things, cloud computing, big data, information technology services, industrial robotics, and intelligent manufacturing. The firm also targets high-end medical equipment, diagnostics, high-value consumables, modern agricultural equipment, ships and marine engineering, new materials, clean energy, energy conservation, and healthcare; for new energy vehicles it focuses on intelligent upstream and downstream supply chains, power batteries and systems, and related technologies. Founded in 2009, the company is based in Beijing with an additional office in Asia. The firm aims to support development and deployment of innovative technologies through private equity and venture capital investments.

Rainmatter Capital is the corporate venture capital arm of Zerodha, based in Bangalore, India. It funds and incubates early-stage Indian fintech startups and health ventures, with a focus on the capital markets space. The organization offers mentorship, workspace support, and investment, typically ranging from $100,000 to $1 million in exchange for minority stakes, to startups across the country. Through its programs, Rainmatter Capital aims to accelerate innovation in fintech and related sectors by providing capital and hands-on resources to entrepreneurs.

A London-based venture capital firm focused on the water sector. Founded in 2009, it targets early-stage opportunities in water technology and water infrastructure, investing in private companies as well as publicly listed companies worldwide.

Oxford Science Enterprises is a university-partnered venture firm that collaborates with the University of Oxford to translate fundamental technologies into companies. It funds life sciences, artificial intelligence and software, healthcare, and deep-tech ventures addressing major challenges such as nuclear fusion, quantum computing, and infectious disease treatments. Founded in 2015, it has raised more than £600 million to build a technology ecosystem and leverages its network of investors, entrepreneurs and sector experts to pursue co-investment, recruit senior management, and launch spin-outs from Oxford research.

Global Brain is a Tokyo-based venture capital firm founded in 1998 that backs technology companies from seed stage through growth rounds. It targets a broad range of sectors including AI, cloud and software, fintech, robotics, life sciences, media, and mobility, and pursues global investments across Europe, North America, Africa and Asia-Pacific. The firm emphasizes hands-on support and resources for portfolio companies, aiming to help them scale beyond financing. It operates a pure investment fund alongside corporate venture funds formed with leading public companies across telecom, real estate, financial services, beverages, agriculture and food, logistics, and electronics.

Ben Franklin Technology Partners of Southeastern Pennsylvania is a non-profit organization founded in 1982 that supports the region's technology ecosystem. Based in Philadelphia, it acts as a capital provider and catalyst for early-stage and growing technology companies across information technology, health, and physical sciences by offering seed-stage funding and related resources to accelerate commercialization. The organization facilitates university–industry partnerships and regional initiatives that connect scientific research with market opportunities, with the aim of creating jobs and strengthening entrepreneurial communities in Southeastern Pennsylvania. Through its programs and partnerships, it supports adoption of new technologies and helps build a robust regional innovation ecosystem.

HG Ventures is the venture capital arm of The Heritage Group. It invests in early and growth-stage companies developing advanced materials and systems for transportation infrastructure, environmental services, and specialty chemicals, as well as digital systems relevant to these industries. The firm aims to partner with portfolio companies by leveraging The Heritage Group’s operating companies and research center to provide technical expertise, manufacturing capabilities, and expansive industry networks. HG Ventures focuses on opportunities in the United States, typically backing companies positioned to improve infrastructure resilience, environmental performance, and energy production through innovative materials and processes. Through its strategic support, the firm helps portfolio companies scale and integrate with real-world supply chains and customers.

De.mem is a decentralized water and wastewater treatment company that designs, builds, owns, and operates treatment systems for industrial, municipal, and residential customers. It offers disinfection technologies including chlorination and ultraviolet systems; biological treatments with aerobic and anaerobic processes; chemical dosing and treatment; membrane-based water treatment systems such as microfiltration, ultrafiltration, hollow fiber nanofiltration, reverse osmosis, and membrane bioreactors; and other processes such as dissolved air flotation, media filtration, and ion exchange. The company provides product life-cycle and automation tools, operation and maintenance services, as well as consulting, engineering, and optimization services. It serves mining, electronics, chemicals, oil and gas, and food and beverage sectors and operates in Australia, Singapore, and Germany.

Toyota Ventures is the corporate venture capital arm of Toyota Motor, based in the San Francisco Bay Area (Los Altos, California). It invests in early-stage startups worldwide, aiming to identify and bring disruptive technologies to Toyota's ecosystem. The firm focuses on frontier technologies across artificial intelligence, autonomy, mobility, robotics, cloud computing, climate tech, renewable energy, smart cities, digital health, fintech, materials, and energy, seeking to partner with founders to accelerate commercialization and scale. Through its investment programs, Toyota Ventures supports startups that align with Toyota's goals of advancing mobility, sustainable energy, and digital innovation, while providing strategic value to Toyota.

Breakthrough Energy Ventures is an investor-led venture capital firm based in Kirkland, Washington, providing patient capital to climate and energy technology companies across seed, early, and later stages. It concentrates on environmental services, climate change, climate technology, and cleantech, investing minority stakes to back technologies that deliver reliable, affordable power while reducing emissions and advancing zero-emission energy solutions.

Lowercarbon Capital is a venture capital firm founded in 2018 and based in Jackson, Wyoming. It invests in companies developing technologies to reduce carbon dioxide in the atmosphere, with a focus on sectors including energy, impact, transportation, industrial materials, and agriculture. The firm supports research and commercialization of emissions-reducing solutions and backing for entrepreneurs pursuing ways to lower emissions, remove carbon, and actively cool the planet.

Right Side Capital Management is a San Francisco-based venture capital firm founded in 2010 that invests in early-stage technology startups. It specializes in pre-seed and seed rounds for capital-efficient companies, with a focus on the United States and Canada and occasional activity in Western Europe, Israel, Australia, and New Zealand. The firm typically makes 75 to 100 investments per year, with round sizes from 50,000 to 500,000 and pre-money valuations ranging from 1,000,000 to 3,500,000. Portfolio companies are typically located outside the San Francisco Bay Area and New York City, and the firm aims to provide a clear yes or no on opportunities within about two weeks.

Starquest Capital is a venture capital and private equity firm based in Paris, France, with a China presence in Beijing. Founded in 2008, it pursues direct investments and fund-of-fund strategies in the New Economy, including sectors such as technology, cybersecurity, green tech, digital services, and healthcare. The firm takes a global outlook and collaborates with partners, including state-owned enterprises, to support growth-stage companies and identify future unicorns.

1517 Fund is a venture capital firm based in Telluride, Colorado, that provides pre-seed and seed capital to technology startups in software, hardware, and deep tech. It targets makers, hackers, and scientists who pursue ambitious projects outside traditional academic paths, supporting early-stage companies led by individuals who learn by doing and build new technologies through hands-on experimentation.

BDC Venture Capital is a major Canadian venture capital investor that engages across the development cycle from seed to expansion, concentrating on technology-based companies with high growth potential that can become market leaders. It supports the growth of Canadian businesses through financing, consulting services, and securitization, with a focus on small and mid-sized enterprises. Since its inception in 1975, it has invested in more than 400 companies spanning life sciences, telecommunications, information technology, and advanced technologies, aiming to foster innovation and scale across the Canadian economy.

Venture Catalysts is an integrated incubator that provides funding, mentorship, and a broad network to early-stage startups. It offers investments ranging from 500K to 2 million per startup with incubation support for 18-24 months. Founded in 2016, it has built a large network of 4500+ angel investors across 36 cities in six countries, with co-investments from notable global investors. The organization prioritizes developing the startup ecosystem in Tier II and III cities in India, operating incubation programs in cities such as Ahmedabad, Lucknow, Raipur, Surat, Nagpur, as well as Delhi, Mumbai, Bangalore and Kolkata. It supports seed and Series A rounds, provides strategic guidance and business-lead generation through its network, and helps startups access education and opportunities for investor engagement. More than 10 incubatee companies have raised Series A in recent years, underscoring its role in early-stage investments and incubation leadership.

Buoyant Ventures is a Chicago-based venture capital firm that backs early-stage climate tech startups, focusing on digital climate solutions across energy, mobility, circular economy, food and agriculture, water, climate intelligence, and the built environment.

Slater Technology Fund is an evergreen not-for-profit seed fund and venture capital firm based in Providence, Rhode Island. It supports early-stage technology ventures, often stemming from academic institutions or government laboratories in the region, with the aim of catalyzing transformational impact and high-value job creation. The fund typically invests at inception in Rhode Island-based companies across life sciences, biomedical technology, software, internet, digital media, energy and environment technology, and related sectors, with up to 0.75 million per transaction and up to 3 million annually, and it can reinvest. The structure seeks substantial follow-on financing from venture capital investors or strategic partners to advance growth, usually over the longer term.

SAIL Capital Partners is a venture capital and private equity firm based in Newport Beach, California, founded in 2002 by Walter Schindler. The firm concentrates on backing companies that address global resource challenges through technology-driven solutions in energy and water, seeking to deploy capital across businesses that improve resource efficiency and sustainability.

SWEN Blue Oceans Partners is a Paris-based venture capital investment firm, founded in 2018, that pursues impact investments in ocean-related solutions. It finances and supports companies developing innovations to address major ocean threats, notably overfishing and plastic pollution, and seeks to enable scalable marine technologies and business models that mitigate pollution and climate-related impacts on the seas. By backing early and growth-stage ventures, the firm aims to accelerate the adoption of sustainable ocean innovations, delivering environmental benefits alongside commercial opportunities.

2048 Ventures is a thesis-driven early-stage venture capital firm based in Princeton, New Jersey. It backs technology startups across the United States and Canada, leads pre-seed rounds with high conviction, and writes checks typically ranging from $500,000 to $2 million to support initial rounds and ongoing company building. The firm operates as a hands-on partner, leveraging its background as operators and product-focused investors to help founders refine product plans, accelerate growth, and close follow-on rounds. Its investment focus spans artificial intelligence, fintech, cybersecurity, hardware, healthcare technology, biotechnology, machine learning, robotics, Internet of Things, augmented and virtual reality, climate tech, e-commerce enablement, business-to-business marketplaces, and SMB vertical SaaS. Since 2018, it has backed over 200 startups, reflecting long-term partnerships with ambitious founders building technologies of the future.

BeAble Capital, founded in 2016 and based in Madrid, Spain, is a venture capital firm focused on science and technology driven opportunities. It concentrates on deep science and technology transfer, intellectual property rich industrial endeavors, and sectors such as advanced materials, nanotech, photonics, micro and nano electronics, ICT platforms, nanotechnology, biotechnology, energy, environment, healthcare and wellbeing, medtech, robotics, artificial intelligence, agriculture and food. The firm supports the creation and development of technology-based companies from early stages, emphasizing strong IP and long research and development backgrounds. Services include identifying technologies, valuing and transferring IP, company creation, fundraising, marketing, internationalization, and strategic and managerial guidance to help startups scale within Spain and beyond. BeAble Capital positions itself as a science-first investor that bridges scientific discovery with entrepreneurship to foster technology transfer and the growth of startups grounded in solid research and IP.

BP is a global energy company engaged in the full energy value chain, including upstream exploration and production of oil and natural gas, downstream refining and marketing, trading of energy commodities, and shipping services to support distribution worldwide. The company also operates a specialized aviation fuels division, Air BP, serving airports and airlines. In response to evolving energy demand, BP has significantly expanded investments in renewable energy sources such as wind, solar, and biofuels through its Alternative Energy initiatives, aiming to transition toward a lower-carbon portfolio while maintaining core hydrocarbon operations.

Investir&+ SAS is a venture capital firm based in Paris, France, established in 2005. The firm specializes in investing in early-stage and growth-stage socially conscious companies across various sectors, including housing, water, energy, employment, health, and sustainable agriculture. Investir&+ focuses on companies that have been operational for at least 12 to 18 months and typically invests between €0.3 million and €1 million per investment, with a maximum total investment of €2 million in a single enterprise. The target enterprise value for investments ranges from €0.7 million to €5 million. The firm aims to hold its investments for five to seven years and seeks board representation in its portfolio companies. Committed to the common good, Investir&+ strives to make a positive social and environmental impact through its investment activities.

Founded in 2016, Climate Impact Capital is an impact investment firm based in Houston, Texas. It focuses on early-stage technology companies addressing climate change through innovations in energy, food, and water solutions.