Reactor – The Podcast for Deeptech & Climate Tech Mission-Driven Founders
Reactor is where ambitious founders and industry leaders share the real stories behind scaling deeptech & climate tech impact-driven companies. Hosted by Jérôme Gilleron, this podcast dives deep into the challenges, strategies, and breakthroughs that drive profitable and cashflow-positive growth in climate tech, deeptech, and sustainability.
Through candid interviews with startup founders, scale-up executives, and industry experts, we explore:
✅ How to scale mission-driven businesses without burning out
✅ Fundraising, sales, and growth strategies for impact startups
✅ Lessons from leaders who’ve built and scaled industry-defining companies
Whether you're a founder, investor, or operator in the climate tech and deeptech space, Reactor brings you actionable insights to fuel your growth.
🎧 Subscribe now and turn your vision into reality!
👉 Available on Spotify, Apple Podcasts, YouTube, and your favorite podcast platforms.
Reactor – The Podcast for Deeptech & Climate Tech Mission-Driven Founders
Reactor is where ambitious founders and industry leaders share the real stories behind scaling deeptech & climate tech impact-driven companies. Hosted by Jérôme Gilleron, this podcast dives deep into the challenges, strategies, and breakthroughs that drive profitable and cashflow-positive growth in climate tech, deeptech, and sustainability.
Through candid interviews with startup founders, scale-up executives, and industry experts, we explore:
✅ How to scale mission-driven businesses without burning out
✅ Fundraising, sales, and growth strategies for impact startups
✅ Lessons from leaders who’ve built and scaled industry-defining companies
Whether you're a founder, investor, or operator in the climate tech and deeptech space, Reactor brings you actionable insights to fuel your growth.
🎧 Subscribe now and turn your vision into reality!
👉 Available on Spotify, Apple Podcasts, YouTube, and your favorite podcast platforms.

This city ski slope heats and powers 150,000 people—by burning their trash.
It sits on top of Copenhagen’s waste-to-energy plant, CopenHill.
In the late 2000s, the city wanted to shut down coal but still had 440,000 tons of non-recyclable waste to deal with every year.
Instead of burying or exporting it, they turned it into energy.
The challenge: build an incinerator that’s clean, efficient, and embraced by locals.
Danish architects BIG—Bjarke Ingels Group proposed something radical: make it visible, fun, educational, and a true public place.
Enter CopenHill (opened 2017): a sharp, industrial building with high-performance filters to limit emissions.
On the roof: a 400 m ski slope, an 85 m climbing wall, hiking trails, and a 10,000 m² green roof.
It reflects Copenhagen’s ambition to lead on urban sustainability.
CopenHill doesn’t hide waste. It shows it, treats it, and transforms it.
Today, CopenHill =
♻️ 440,000 tons of waste transformed each year
🏠 Heat & power for 150,000 residents
🌱 A green roof, sports, and public space on top of an industrial plant
Would you ski on a power plant?
#climatetech #wastetoenergy #urbaninnovation #CopenHill #Copenhagen #BIG #architecture #sustainability #deeptech #Reactor