Investor Profile: Prelude Ventures — Thesis, Cheque Size & How to Apply

Founders exploring Prelude Ventures funding are knocking on one of climate tech's longest-standing doors. The San Francisco firm invests in and supports early-stage startups with the greatest potential to mitigate climate change, and a portfolio-company release from January 2026 describes it as managing approximately US$2 billion in assets. For over a decade Prelude has sought out purpose-driven founders, providing the capital and expertise to build the next generation of category-defining businesses that, in its own words, will reshape the global economy for the greater good of people and planet.

Thesis and focus areas

Prelude's positioning is blunt: "For us, climate is everything." The firm organises its work across seven sectors — Built Environment, Carbon Management, Compute, Food and Agriculture, Energy, Manufacturing and Industrials and Mobility — and looks for exceptional entrepreneurs tackling large market opportunities that reduce the global economy's carbon intensity. The team's history runs back to the early days of cleantech: Managing Director Gabriel Kra began investing in solar-era clean technology in 2009, and the firm has spent more than a decade backing founders through the sector's boom, bust and current resurgence. The emphasis is on ventures that pair real climate impact with the potential to become multi-billion-dollar businesses.

Cheque size and stage

Prelude is an early-stage investor; specific cheque sizes are not publicly disclosed. The firm's deal activity gives a sense of the rounds it plays in: it led Vaulted Deep's US$32.3 million Series A, led Quaise Energy's US$134 million Series B first close (alongside strategic co-leads JERA and Idemitsu), and co-led Graphyte's US$30 million Series A. Founders should read this as a fund comfortable leading meaningful early rounds and staying in through the scale-up phase.

Notable portfolio

Featured portfolio companies include Lightship (electric trailers), Mill (kitchen-based food-waste processing) and Arable (agricultural sensing and analytics). Beyond the homepage highlights, the firm's recent lead investments include Vaulted Deep, a biomass carbon-removal and storage company delivering durable carbon dioxide removal; Quaise Energy, developing ultra-deep geothermal drilling using millimetre-wave technology from MIT; and Graphyte, scaling durable carbon removal through its Carbon Casting process. The portfolio skews toward hard-tech, science-driven climate solutions with genuine deployment momentum.

Team

The team is led by Matt Eggers, Managing Partner, alongside Managing Directors Mark Cupta and Gabriel Kra. Cupta's background spans chemical engineering and the Stanford Graduate School of Business, while Kra is one of the sector's longest-tenured investors. The firm operates from One Ferry Building, San Francisco, CA 94111, with a lean team focused squarely on climate.

How to apply for funding

Prelude does not publish a formal pitch-application form on its website — founders will not find an online submission portal. What it does publish are direct contact details: [email protected] and (415) 729-1270, both listed on the firm's site alongside its LinkedIn presence. That email is the official front door for founders. Given the firm's purpose-driven thesis, a pitch that clearly quantifies the venture's climate-mitigation potential — not just its commercial upside — is likely to resonate best with the team.