Guillaume Gras (ECBF): Investing In Growth-Stage Circular Startups

Guillaume Gras (ECBF): Investing In Growth-Stage Circular Startups

Author: Hugo Rauch November 5, 2025 Duration: 52:01

🌊 The Fifth Swell Has Arrived

What does circularity really look like when the hype fades?

I sat down with Guillaume Gras, Investment Director at ECBF and former Innovafeed co-founder (raised over €250M), to unpack how climate VCs think about circularity, and what truly drives growth and resilience.

In this episode, we explore what circularity means beyond buzzwords and regulation, and how founders can build scalable businesses that turn waste into value without losing sight of economics.

***

Connect with Guillaume:

ECBF.VC

Guillaume Gras | LinkedIn

Or ask me for an intro!

***

🌊 Next Up on The Swell

An interview with former co-founders of two unicorns now turned climate VC…



This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit newwavenewsletter.substack.com

Hugo Rauch hosts New Wave, a podcast that lives at the intersection of business ambition and scientific reality. This isn't about distant predictions or abstract science; it's a grounded exploration of the technologies and companies being built right now to address our environmental future. Each episode focuses on the practical journey, dissecting the models, the breakthroughs, and the hard decisions that define the climate tech landscape. You'll hear from founders, researchers, and investors who are actively shaping this space, getting into the specifics of what works, what doesn't, and why. The conversations move beyond hype to examine the tangible mechanics of creating viable solutions, from energy storage and sustainable materials to carbon removal and regenerative agriculture. It’s for anyone who thinks about the climate challenge not just as a crisis, but as a complex and urgent field of innovation. By tuning into this podcast, you gain a clearer understanding of the economic forces and scientific principles driving the next generation of environmental solutions. New Wave connects the dots between the lab, the boardroom, and the impact we need to see in the world, offering a sober yet optimistic look at where substantive progress is truly being made.
Author: Language: English Episodes: 89

New Wave.
Podcast Episodes
Jahed Momand (Cerulean Ventures): AI, Nature & Pre-Seed Bets [not-audio_url] [/not-audio_url]

Duration: 51:38
Subcribe to the newsletter: New Wave | Hugo Rauch | Substack****🌊 Pricing Nature As An AssetWhy the next wave of climate returns will be built on data, ecosystems, and riskWe’re joined by Jahed Momand, General Partner at…
Jessica Burley (Planet A): Funding the Physical World in Europe [not-audio_url] [/not-audio_url]

Duration: 27:57
Thank you to this week’s sponsor:Accelerating Impact - a non-profit advancing impact finance by mobilizing capital and running free accelerator programs for emerging fund managers. Join for expert coaching, training, fin…
Erik Engellau (Norrsken Launcher): How To Commercialize Science [not-audio_url] [/not-audio_url]

Duration: 53:52
Thank you to this week’s sponsor:Accelerating Impact - a non-profit advancing impact finance by mobilizing capital and running free accelerator programs for emerging fund managers. Join for expert coaching, training, fin…
AI for Materials: Breakthrough or Illusion? [not-audio_url] [/not-audio_url]

Duration: 45:28
Sign up to New Wave's newsletter. ***This week on New Wave Weekly:👉 AI won’t magically invent new materialsAlphaFold worked because biology had great data. Inorganic materials don’t. Sparse datasets, missing thermodynami…
Anna Finizio: Inside Europe’s Largest LP (EIF) [not-audio_url] [/not-audio_url]

Duration: 45:03
Thank you to this week’s sponsor:Accelerating Impact - a non-profit advancing impact finance by mobilizing capital and running free accelerator programs for emerging fund managers. Join for expert coaching, training, fin…