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.

Helios Climate Ventures is a venture capital firm founded in 2016 and based in Aspen, Colorado. The firm specializes in investing in early-stage technology and clean technology companies, focusing on opportunities that promise high impact and significant returns. Helios Climate Ventures leverages its extensive network to identify and source well-vetted investment opportunities that are typically challenging to access. As a Registered Investment Adviser, the firm emphasizes its commitment to fostering innovation in the clean technology sector while seeking to drive positive environmental outcomes through its investments.

Founded in New York, MUUS Climate Partners is a venture capital firm specializing in investments at the intersection of decarbonization and technological innovation, with a focus on the climate tech sector.

Burnt Island Ventures is an early-stage venture capital firm based in New York that identifies, funds, and supports founders building technology-driven companies. The firm focuses on energy, information technology, clean technology, climate technology, and water-related startups, with an emphasis on B2B and technology-enabled products and services across industrial and consumer applications. Since its founding in 2020, Burnt Island Ventures has positioned itself as a specialized investor that works closely with founders to accelerate product development, market validation, and growth.

Mountain Group Capital, LLC is a venture capital and private equity firm founded in 2002 and based in Nashville, Tennessee. The firm specializes in seed, early-stage, venture equity, buyouts, growth capital, and later-stage investments, primarily targeting the life sciences, animal health, and technology sectors. Within life sciences, it emphasizes MedTech, medical devices, diagnostics, nutraceuticals, and expedited drug development. In the animal health sector, the firm focuses on technologies that enhance companion animal health and agricultural practices. Mountain Group Capital also invests in disruptive technologies that feature innovative business models with manageable development risk and a swift path to market. The firm seeks investment opportunities in North America, particularly in the Southeastern United States and Tennessee, typically targeting companies with revenues between $1 million and $50 million. It generally prefers to acquire minority interests in venture capital investments while aiming for controlling interests in buyout transactions.

Tramway Venture Partners, established in 2017, is a venture capital firm headquartered in Albuquerque, New Mexico. The company focuses on investing in innovative startups within the information technology, life sciences, and healthcare sectors.

Cottonwood Capital Partners is a venture capital firm that backs early- and seed-stage startups in disruptive technology and related fields such as healthcare, information technology, nanotechnology, photonics, advanced materials, sensors, clean energy, robotics, life sciences, and enterprise software. The firm focuses on Southwest United States and Northern Europe, investing primarily in Arizona, New Mexico, Texas, Colorado, and Utah, and in the Netherlands and parts of Northern Europe, including Mexico as part of its regional reach. Typical investments range from about $1 million to $3 million, and the firm often takes a board seat on portfolio companies. Founded in 2009, Cottonwood Capital Partners is based in Los Alamos, New Mexico, with additional offices in El Paso, Santa Fe, and Enschede, Netherlands.

Granite Ventures is a San Francisco-based venture capital firm founded in 1992 that concentrates on seed, Series A and Series B investments in technology companies. It backs early-stage startups across the United States, with interests in cloud infrastructure and applications, mobility, internet applications, and software, as well as communications components, wireless, network and application security, storage, digital media, and related technologies. The firm typically leads investments and aims to take a board seat in its portfolio companies. Initial investments commonly range from about $0.5 million to $4 million, with potential follow-on capital bringing total commitments up to roughly $10 million over the life of a company. Granite Ventures has backed numerous startups, reflecting a track record of supporting founders toward category leadership.

EPIC Ventures is a Salt Lake City-based venture capital firm that backs early-stage software and internet infrastructure companies across the United States. The firm leverages the operational and financial experience of its partners, a network of technology industry contacts, and guidance from advisors to help portfolio companies scale and succeed. It focuses on technology-driven sectors such as software-as-a-service, healthcare, security, and the future of work, with investments spanning software, mobile, big data, and internet of things platforms. EPIC Ventures maintains a hands-on approach, combining geographic reach with operational insight to support entrepreneurs from inception through growth stages. The firm seeks to partner with teams positioned to lead the information economy of tomorrow and aims to accelerate growth through strategic collaboration and capital.

Mazarine Ventures is a technology investment firm based in Chicago, Illinois, focused on generating social and environmental impact through early-stage investments. The firm specifically seeks out young companies that offer innovative solutions to improve efficiencies and address water and wastewater-related risks. Mazarine Ventures is particularly interested in founders who are proactive and dedicated to tackling challenges associated with public health, environmental protection, business continuity, and climate change. The firm invests in various sectors, including communications, networking, diagnostic equipment, biotechnology, water utilities, and software, targeting companies with revenue of around one million dollars. Through its investments, Mazarine Ventures aims to support ventures that contribute positively to society and the environment.

SAIL Capital Partners LLC is a venture capital and private equity firm established in 2002 and based in Newport Beach, California. Founded by Walter Schindler, the firm focuses on investing in companies that address critical challenges related to global natural resources, particularly in the energy, water, and environmental sectors. Its investment portfolio includes companies such as The Cleantech Group, Xtreme Power, and WaterHealth International, among others. SAIL Capital Partners emphasizes innovative technologies across various industries, including environmental science, agriculture, and manufacturing, aiming to contribute to sustainable solutions while generating financial returns.

vSpring Capital was a private equity and venture capital firm founded in 2000 and based in Salt Lake City, Utah. It specialized in seed, startup, and early-stage investments, with a focus on information technology and life sciences sectors, including areas such as genomics, drug discovery, enterprise software, and medical devices. The firm primarily targeted companies located in the Intermountain West region of the United States, particularly the Rocky Mountain area. Known for its hands-on approach, vSpring Capital aimed to be the first investor in its portfolio companies, providing operational assistance, making key introductions, and helping to recruit top executives. The firm typically invested between $2 million and $3 million initially, with potential follow-on investments up to $10 million over the life of a company. In 2012, vSpring Capital merged with Signal Peak Ventures, combining their expertise and resources under the Signal Peak Ventures name.

Altira Group is a Denver-based private equity and venture capital firm founded in 1996 by Dirk McDermott. It invests in oil and gas and related technology and services, information technology, energy, advanced manufacturing, the internet of things, climate technology, software as a service, robotics and drones, and other sectors in the United States.

Trinity Capital is a lending firm that provides debt-based financing to growth-stage and venture-backed companies, including venture debt, revolving lines, senior and subordinated debt, and equipment financing. Headquartered in Phoenix, Arizona, it was founded in 2008 and collaborates with venture capital firms, technology banks, and portfolio companies to tailor financing solutions that help startups preserve equity while obtaining capital. The firm focuses on technology-driven and knowledge-based sectors, including healthcare, information technology, software as a service, financial services, consumer products, manufacturing, energy, cleantech, and nanotechnology, and supports growth, early-stage to later-stage ventures, buyouts, and acquisitions. Trinity Capital aims to partner with venture-backed startups seeking flexible capital to fuel growth, scale operations, or navigate strategic transactions.

Signal Peak Ventures is a Salt Lake City, Utah-based private equity and venture capital firm that pursues early-stage and growth investments in technology companies across the United States. It concentrates on information technology sectors, including software as a service, enterprise software, networking and communications, security software, Internet, and mobile computing, and also engages with life sciences companies in drug delivery, diagnostics, and medical devices. The firm provides operational support to portfolio companies, such as introductions to customers and strategic partners and assistance in recruiting executives and co-investors, drawing on a team with extensive leadership and investment experience. Founded in 2011, the firm has raised multiple funds and generally makes initial investments in the low to mid single digits with follow-on capital over the life of a company in the five to ten million range.

Verge Fund, established in 2003, is a venture capital firm based in Albuquerque, New Mexico. It specializes in early-stage growth investments, focusing on life science, technology, and renewable sectors within the state. The firm's principals, with a combined 43 years of experience, leverage their local knowledge and networks to identify and support high-potential startups, often at the seed stage when business plans may not be fully developed. Verge Fund aims to generate significant returns by providing capital and expertise to promising ventures in New Mexico.

Global Environment Fund (GEF), founded in 1990 and based in Bethesda, is an asset management firm that focuses on venture capital investments in sectors such as energy, utilities, and agriculture. With approximately $1 billion in assets under management, GEF seeks to invest in businesses worldwide that offer effective solutions to environmental and energy challenges. The firm specializes in private equity dedicated to clean technology, emerging markets, and sustainable forestry. GEF's investor base includes notable endowments, foundations, family offices, and pension funds, reflecting its commitment to promoting sustainable practices while generating returns.