Reactor Meetup @Vivatech 2025 Paris & Book a call with 24 early-stage investors to get honest pitch feedback
News, Companies and Opportunities from the Deeptech & Climate Tech Worlds – June 3rd, 2025
Hello everyone!
I hope that everybody is doing great. Vivatech is around the corner in Paris. This is an exciting event and I can’t wait to meet you all. I am organizing a side event just for the community.
This newsletter is published every other week and dives into the many aspects of building profitable deeptech and climate tech businesses.
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Overview
Reactor news in 1 minute:
Reactor on Tour - a few spots available to interview tech scale-ups and corporations:
Lisbon, Portugal, June 28-29th 2025 - 2 spots
Reactor Corporate Pioneer Program: do you know a great large company who works well with startups? I want to interview them.
5 news of the week:
✅ A real-life hoverbike is here — and it actually flies
✅ Book a call with 24 early-stage investors to get honest pitch feedback
✅ Switzerland just turned its train tracks into solar farms
✅ Genomines unveils its new 600m² lab to scale sustainable metal extraction
✅ The climate capital stack is here — find out who really funds innovation
My recommendations to learn more: growing Figma from 10 to 1000 employees
Reactor Vivatech side event
Happy to start a series of in-person events to create connexions in the deeptech and climate tech world.
Investors, corporate leaders, startup and scale-ups CxOs, register to meet ambitious peers the night before Vivatech starts.
See you there!
https://www.linkedin.com/events/reactorcommunity-vivatechsideev7335177613923037184/comments/
Operation - Reactor Corporate Pioneer Program
“Corporates don’t pay startups.”
“Corporations and startups can’t work together.”
Let’s stop the blame and shame, shall we?
There are large companies that work with startups and pay them for contracts.
I want to know, share and highlight those companies who work well with deeptech and climate tech startups. Write to me on LinkedIn.
If you have successfully worked with a large company that treats startups well, write to me.
If you work for a large corporation that works well with startups, you've got it: write to me.
Forget the bad ones: Let’s shine light on the good ones.
Reactor Tech Podcast Tour
I am travelling in the following months and looking forward to meeting new entrepreneurs, leaders, and investors:
Lisbon, June 28th-29th
Are you there, or do you know someone who will send them this link to work with me? Work with Reactor.
1️⃣ A Hoverbike from the Future Takes Off
Volonaut just launched the world's first hoverbike. Think Harry Potter’s broomstick meets sleek drone tech.
With their Airbike, anyone can now zoom across landscapes, explore the sky, and return home with nothing but wind in their hair and adventure in their soul.
🧹 Is this the future of clean, short-distance air mobility?
Watch the video and decide for yourself:
🔗
https://volonaut.com/
🔗 Shared by Marc Duckeck
2️⃣ Talk to These 24 Investors Directly
Don’t just pitch blind. Book a call with 24 early-stage investors, including GPs and angels who back some of the world’s best-known startups.
Ask them: “What would make my startup irresistible to you?”
Get honest, practical advice — rates range from $25 to $250.
You’ll find investors from Overlook Ventures, Ethos Fund, Fiat Ventures, Outside VC, and more.
📞 Search their profiles and book on the Hubble Marketplace
Shared by Kevin Jurovich
3️⃣ Train Tracks Turn Into Solar Farms
Swiss startup Sun-Ways just turned railway tracks into power plants.
Using removable solar panels laid between live tracks, they’re proving that existing infrastructure can become a clean energy source — no extra land use required.
🇨🇭 Pilot launched in Switzerland
🇰🇷 South Korea, 🇯🇵 Japan, and 🇮🇩 Indonesia are already exploring it
🏡 Germany could power 1.8M homes with this tech
🔗 Shared by Ole Margraf
4️⃣ Genomines Opens New Deeptech Lab
After 3 years of R&D, Genomines has opened its new 600m² lab facility. This marks a leap from bench science to industrial-scale deployment of its phytomining platform (aka: sustainable metal extraction via plants and microbes).
🧬 It’s a breakthrough moment:
→ From experiments to production
→ From lab to field
→ From research to revenue
Kudos to Zakaria Rifai and the Genomines team for bringing deeptech to life.
🔗 Shared by Dali Rashid, PhD
5️⃣ Who Really Funds Climate Innovation?
Sightline Climate just released a powerful breakdown of the Climate Capital Stack — a full map of how money flows through the climate innovation system.
It includes:
✅ Catalytic capital like grants & concessionary loans
✅ Infra funds for scaling big tech
✅ Corporate VCs & strategics
✅ Commercial bank lending
✅ Government & multilaterals
✅ AND early-stage VCs
📊 A must-read for founders raising at ANY stage:
🔗 https://lnkd.in/eFVctReW
🔗 Shared by Inside VC
Check out :
Learning from Scaling Figma
I had a great time reading this article on growing Figma from Claire. I don’t want to spoil out so here is the link:
Thanks Claire for sharing.
📩 Want More Deeptech & Climate Tech Insights?
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Want more? Be a guest on my podcast, book me for a conference, or something else? : Work with Reactor.
Join the Reactor community on WhatsApp: deep tech and climate-tech entrepreneurs, events, discussions
💬 Have a story to share? Please message us to be featured in a future edition!
Let’s keep building the future of deeptech and climate tech. 🚀
Keep innovating,
Jérôme






