Prime Impact Fund

Lilac is a leading technology provider of commercially ready ion exchange (IX) solutions that unlock faster, cheaper, and cleaner production to meet lithium needs now, not later.

Via Separations is a membrane technology company driving the transition from expensive, energy-intensive thermal separations to efficient, lower cost filtration. They focus on improving manufacturing competitiveness by lowering costs and energy consumption in industrial separations.

Verdox provides an innovative solution for carbon removal, utilizing fully electric electrochemical technology to capture CO₂ from industrial processes and ambient air efficiently.

Gradient Technologies offers a passwordless multi-factor authentication (MFA) solution that eliminates traditional authentication methods, providing a frictionless user experience while enhancing security against credential-based cyberattacks.

Sublime Systems is a leading provider of resources and information. It offers comprehensive data and tools.

Clean Crop Technologies is transforming the future of food by addressing challenges at the farm level with their proprietary DriPRIME™ technology, which uses cold plasma to improve seed vigor and protect crops from pathogens.

Charm Industrial Co., Limited focuses on technology products such as speakers, headphones, mounts, wireless chargers, lighting, power, cables, and accessories, emphasizing innovative design and compliance with international standards.

Noon Energy is focused on providing 24/7 clean, reliable electricity through ultra-long duration energy storage technology, enabling energy independence and security.

Zanskar is the first AI-native geothermal energy company, using modern geoscience and artificial intelligence to unlock geothermal resources for affordable, carbon-free energy.

Vesta is a public benefit corporation focused on developing Marine Enhanced Rock Weathering (mERW) to accelerate the Earth's natural process of carbon dioxide removal using olivine sand in coastal projects.

Clean Energy Ventures funds disruptive, capital-light technologies and business model innovations that reshape how we produce and consume energy. Since 2005, the leadership team has invested in 40+ climate tech startups with the potential to substantially reduce greenhouse gas emissions by 2050. The firm requires every investment to demonstrate 2.5 gigatons of CO2 mitigation potential using their proprietary calculator. More than 60% of the investment team holds advanced science or engineering degrees to provide hands-on technical support. Their track record includes only ~15% write-offs in hardware-focused cleantech, unusually low for a sector where 90%+ of post-2007 funded companies failed to return capital.

A $1+ billion climate fund backed by ultra-high-net-worth individuals like Bill Gates, Jeff Bezos, and Jack Ma, with an unusually long 20-year investment horizon and a requirement that portfolio companies can avoid at least 500 million tons of CO2 emissions annually by 2050. The fund combines deep technical expertise from former ARPA-E leaders and scientists with access to a broader Breakthrough Energy ecosystem of policy, advocacy, and deployment programs, making it a gold standard validator for technically ambitious climate hardware companies.

Prelude Ventures manages capital exclusively for the climate-focused Simons family, creating a single-LP structure that demands strict venture returns from a 100% climate portfolio while applying a hard "no fossil fuels" rule that rejects any technology making oil, gas, or coal extraction cheaper or longer-lived. The firm combines deep technical operating experience with climate activism roots and has invested continuously through climate tech's "dark years" since 2009, positioning itself as a climate generalist comfortable with high capital intensity and long hardware timelines across the entire low-carbon economy.

Leads deep-tech, hardware-heavy climate investments across cutting emissions, carbon removal, and time-buying solutions, backing nonprofit research and offering in-house scientific expertise plus hands-on technical, hiring, and regulatory support.

A family office-backed venture fund focused on climate-sensitive clean energy, healthcare, food, and air innovations.