Clean Energy Ventures

Nth Cycle is the industry leader in critical metal refining, utilizing patented electro-extraction technology to recover critical metals from end-of-life batteries, scrap metal, and mined ore on-site at facilities.

LineVision delivers actionable transmission grid intelligence, enabling utilities and system operators to optimize operations and planning activities.

ConnectDER provides meter socket adapters that facilitate faster and more affordable installations of solar panels, battery backups, and electric vehicle chargers for homes.

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

OXCCU develops technologies to convert waste carbon into sustainable aviation fuels, chemicals, and plastics, aiming to create the lowest cost and lowest emission pathways for hydrocarbon production.

Advanced manufacturer of next-gen turbocompressors, driving breakthrough heat pump performance.

Rebound Technologies offers innovative cooling solutions powered by IcePoint technology, which leverages ice as a thermal battery to reduce energy consumption and carbon emissions in industrial cooling applications.

Aqua Membranes manufactures advanced reverse osmosis membrane elements using innovative printed spacer technology to enhance water treatment efficiency and sustainability.

Travertine Tech specializes in sustainable production of minerals and chemicals critical for energy storage, agriculture, and infrastructure, utilizing next-generation phosphate technology that is circular and carbon-negative.

NitroFix develops modular, scalable green-ammonia generators that enable industries to reduce production costs and achieve net-zero emissions by utilizing renewable energy sources for on-demand generation, storage, and use of emissions-free ammonia.

Electrified Thermal Solutions is pioneering the future of zero-carbon industrial heat cheaper than natural gas, using electrically conductive firebricks to create the Joule Hive™ Thermal Battery, which converts and stores electricity as heat at high temperatures.

Carbon Upcycling is a carbon and waste circularity company that converts carbon emissions and industrial waste byproducts into valuable, local materials for low-carbon cement production.

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.

Early-stage climate investor using a 12,000+ startup proprietary database and hedge-fund-style quantitative screening instead of relationship sourcing, often taking board seats (96%) and offering Rocky Mountain Institute sector expertise.

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.

Nonprofit-governed, 100% catalytic capital vehicle prioritizing climate impact over returns, filling the critical capital gap for hard-tech solutions and requiring ≥0.5Gt CO2e impact, additionality, and path to commercial follow-on.

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