From Frustration to Fusion: What’s Next in Deeptech
🌍 Five Good News of the Day – Deeptech & Climate Tech Businesses – July 8th, 2025
Hello everyone!
I hope you're all doing well.
This week, it’s all about bold moves: founders fixing broken systems, fusion startups rewriting physics, and impact platforms opening global doors. Here’s your weekly dose of ambition, velocity, and vision.
This newsletter is published every other week and explores the many dimensions of building profitable deeptech and climate tech businesses.
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Overview
Reactor news in 1 minute:
The biggest live entrepreneurship event of the year - PS: it’s free
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:
🚆 Night trains are broken — so Thibault Constant is building his own
→ Introducing NOX Mobility: private, affordable, on-time overnight trains launching in 2027.⚛️ Proxima Fusion raises €130M to lead Europe’s stellarator fusion race
→ Largest fusion round in EU history to bring clean, continuous power to life.📬 Reactor becomes a Lemlist Ambassador
→ Our go-to outbound tool just became an official partnership.🌎 SprintUY 2025 opens for LATAM expansion
→ Soft landing program in Uruguay for science-based startups.🌍 ChangeNOW 2026 call for impact innovators is now live
→ Apply to pitch, exhibit, host, or hire at the world’s biggest impact summit.
Deeptech & Climate Tech Entrepreneurship book club - book #1
Jobs in deeptech and climate tech
Fundraising campaigns in progress
My newsletter recommendations to learn more
Reactor is on Youtube
Did you know that Reactor is on Youtube? One video published everyday.
Most businesses lose money on ads. Here's why.
They spend more getting customers than they make. The fix? Money Models.
A money model attracts more customers to spend more money, faster, repeatedly. It's how Alex Hormozi built his companies.
If you know Reactor, you know that the previous 2 books and Alex’s videos were of great influence in the construction of Reactor.
Join his live book launch on August 16th, 9 am PT / 12 pm ET, to learn the 4 types of Money Models that work in any business.
Save your spot here or click on the image! 👇
Operation - Reactor Corporate Pioneer Program
“Corporates don’t pay startups.”
“Corporations and startups can’t work together.”
Let’s move past the blame and spotlight those doing it right.
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 a light on the good ones.
1️⃣ Reactor becomes a Lemlist Ambassador
If you're in deeptech or climate and doing outbound, you’ve likely heard us rave about Lemlist.
Now it’s official: Reactor is a Lemlist Ambassador 🚀
Why we love it:
🧠 Built-in AI icebreaker generator
🧰 Huge template library (copy/paste + iterate)
📲 Email + phone + LinkedIn workflows
🧼 Clean, simple UI your team will actually use
We use it daily — and we recommend it to every founder in our network.
🎁 Try it free for 14 days
2️⃣ Expand into Latin America? SprintUY Is Your Launchpad
Thinking of going global? SprintUY 2025 in Uruguay is now open for applications — a soft-landing program for science-based and tech-driven startups ready to scale into Latin America.
📍 What you get:
1 week of founder immersion in Montevideo (Sept 29–Oct 7)
Travel + accommodation covered
Exposure to the LATAM startup and investor ecosystem
🗓️ Deadline: July 10
🔗 Apply here
3️⃣ Apply to Be Part of ChangeNOW 2026
ChangeNOW 2026 — the world’s largest event for planet-positive innovation — is calling for applications. If you’re building for impact, this is your global stage.
Here’s what you can apply for:
✨ Exhibit your solution
🎤 Pitch to investors in 3 minutes
🧠 Host a workshop
💼 Join the Impact Job Fair
Whether you're early-stage or scaling, they offer tiered pricing to keep it accessible.
📅 Summit Dates: March 30–April 1, 2026
📝 Apply now
4️⃣ Night Trains Are Broken. He’s Building His Own.
Thibault Constant has slept in over 400 night trains across Europe. He built Simply Railway to share the magic. But the reality? Tiny cabins. Pricey tickets. Delays. Disappointment.
So… he’s fixing it.
Nox Mobility is his answer: a new night train company launching in 2027 with:
100% private rooms (no strangers)
Fares from €79
Simple, on-time routes — no shunting, no surprises
“This isn’t just nostalgia,” says Thibault. “It’s a real alternative to planes. And it should work.”
5️⃣ Proxima Fusion Raises €130M to Bring Stellarator Power Plants to Life
The largest fusion round in European history just closed. Munich-based Proxima Fusion raised €130M Series A, led by Cherry Ventures & Balderton, with a long list of top-tier deeptech investors backing its stellarator-based fusion platform.
Why this matters:
Builds on Europe’s decades of public fusion research
Uses QI-HTS stellarators — a safer, continuous, engineering-friendly path
Simulation-led, hardware-driven, and aiming to achieve Q>1 by 2031
🧲 From the Max Planck Institute to a 3-site team working across Germany, the UK and Switzerland, Proxima isn’t just chasing fusion — it’s racing to build it.
Fundraising campaigns in progress - Deeptech - Climate Tech
⚡ Sonaid - France - Sound-based Emergency Alert System - seed - 1.5 m€
☀️ UNDA - France - Electricity From The Power of Waves 🌊 - Pre-seed - 500 K€
Want to feature yours? Contact us!
DEEPTECH CEO BOOK CLUB
Book 1 - The Hard things about Hard Things
I could not recommend more this book about the reality of being a CEO. This is the first book I’ve sent out to CEO I have ever mentored.
Jobs in deeptech and climate tech
Jobs at Yacon & Co (France, sustainable sirop): CMO https://www.linkedin.com/posts/raphaellanolleau_lundi-8h-certains-cherchent-un-caf%C3%A9-moi-activity-7342798018162700288-Hp7Y/
Jobs at UNIVITY (France, Space): Telecom Payload Engineer
https://www.linkedin.com/posts/shola-efunshile-981561a7_activity-7341740723383201792-1y1k?
Jobs at Blusink (Remote, Ocean): social media manager https://www.linkedin.com/posts/anjana-aravind_social-media-manager-notion-activity-7346886068828311573-sIPD
Jobs at Quindar (US, Space): several positions https://www.linkedin.com/posts/quindarspace_quindar-is-growing-and-were-focused-on-activity-7344403847114625025-yV_e/
Want to feature yours? Contact us!
Newsletter Recommendation
has been helping deeptech startups for decades. He has built his entire expertise on how to build those without raising money - or at least the very minimum. He has developed his own methodology called “The Coachroach Strategy” or “La stratégie du cafard”.Today, he has a strong community around him, leaders who have fully embraced his advice to grow their deeptech business. It’s worth reading.
It’s in French by the way.
📩 Want More Deeptech & Climate Tech Insights?
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Let’s keep building the future of deeptech and climate tech. 🚀
Keep innovating,
Jérôme