February 5, 2026

Episode 18: Cam Ross (Green Angel Ventures) - What Makes Climate Tech Investable

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Episode summary

Cam Ross, CEO of Green Angel Ventures, discusses what makes climate tech companies investable on Episode 18 of Scaling Green Tech, a podcast by Adopter.

Ross explains how Green Angel Ventures evaluates over a thousand companies each year to select approximately six for new investment, having deployed £58 million across more than 50 UK-based portfolio companies to date. He traces the investment process from initial screening through specialist review, pitch events, and a multi-week due diligence programme. He argues that the strongest early-stage climate tech companies are those whose products are commercially viable without a green premium - standing on their own feet even if supporting regulation were removed. Ross also outlines why 2025 was a difficult year for climate tech fundraising, with early-stage exits at a four-to-five-year low, but presents evidence from Green Angel's own portfolio that fundraising timelines are shortening and 2026 is set to improve.

This episode is relevant for early-stage climate tech founders preparing to raise angel or seed investment, angel investors looking to join a climate-focused syndicate, climate adaptation technology developers seeking funding, and B2B marketers working with deep tech startups on investor-facing messaging and pitch deck strategy.

Guest profile

Cam Ross is the CEO of Green Angel Ventures. Ross has previously been a founder himself and brings experience across early-stage investment and business growth in the climate technology sector.

Green Angel Ventures is a specialist venture capital investment company focused on early-stage climate technology businesses in the UK. The company operates a 300-plus angel investor network called Green Angel Syndicate, alongside the Green Angel Climate Change Fund, and has deployed £58 million across more than 50 portfolio companies. Portfolio companies span sectors including water technology (StormHarvester), biodiversity measurement (Nature Metrics), construction materials transparency (Qflow), and low-carbon building materials (Dekiln).

Company Website

Cam Ross LinkedIn

Key takeaways

  • Green Angel Ventures evaluates over a thousand companies per year and made six new investments in 2025, alongside approximately 20 follow-on investments into existing portfolio companies.
  • Green Angel Ventures has deployed £58 million across more than 50 UK-based portfolio companies, with an average investment of just over £1 million per company.
  • According to Cam Ross, early-stage climate tech exits in 2025 were at a four-to-five-year low, creating a bottleneck where angel investors who have not received returns cannot recirculate capital into new deals.
  • Ross argues that investable climate technology must be commercially viable without a green premium - products need to be cheaper, easier to use, or functionally superior regardless of whether supporting regulation remains in place.
  • Green Angel Ventures is launching the 2026 edition of its Climate Change Fund, which will invest in around a dozen companies across the year, including adaptation technologies alongside its established mitigation focus.

topics covered

  • Green Angel's portfolio and investment thesis 
  • How angel network members add value to portfolio companies
  • The thousand-to-six screening and due diligence process
  • Why the founder matters at the earliest investment stage
  • Marketing, messaging, and pitch deck quality for early-stage startups
  • Commercial viability versus the green premium
  • Climate adaptation as an expanding investment category
  • The 2025 funding slowdown and prospects for 2026
  • Capital-intensive climate tech and the role of grant funding
  • Regulation as both an accelerator and a risk for climate tech companies
  • The Green Angel Climate Change Fund 2026 and how to get involved

Frequently asked questions

What is an angel investor network?
What makes a climate tech company investable at Green Angel Ventures?
How do early-stage climate tech companies get funded in the UK?
Is climate tech investment increasing or decreasing?
What is climate adaptation investment?

About Scaling Green-Tech

Scaling Green-Tech by Adopter is a podcast for people shaping the future of climate technology - founders, investors, and ecosystem leaders at the forefront of adaptation and resilience solutions. As part of Adopter’s mission to accelerate the adoption of high-impact climate innovation, the podcast aims to amplify real voices and practical insights that can help others navigate the startup journey. These conversations go beyond the hype to bring real, unfiltered stories - the wins, the roadblocks and everything you need to know in between.

Read the full transcript here
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