JUNI Team-Up Challenge: GreenTech Batch
Bring the IP, the industry know-how or the drive to build. In six weeks, you’ll find your co-founders and turn a GreenTech idea into a validated concept, ready for the next step toward funding.
JUNI Team-Up Challenge: GreenTech Batch
6 Weeks Program, Team-Up Challenge → Starting January 2027 / Limited
JUNI Mitte, Berlin
Coming Soon
Overview
GreenTech needs founders, not just breakthroughs.
Europe’s climate transition depends on research that makes it out of the lab. Too often it doesn’t, because the science is ready before the team is. The first GreenTech batch of the JUNI Team-Up Challenge is built to change that.
Ideas that fit this batch contribute to at least one of these areas:
- Decarbonization & clean energy
- Resource efficiency & circular economy
- Climate adaptation & resilience
- Pollution prevention, water & soil protection
- Biodiversity & ecosystem protection
This includes enabling technologies such as environmental sensing, monitoring and data. Your idea can make an impact in energy, mobility, industrial production, construction, food & agriculture, or any other field where science can speed up the green transition. Our focus areas are aligned with the environmental objectives of the EU Taxonomy.
Key facts
What you need to know.
Our batch is all about GreenTech. Over six weeks this winter, scientists, industry experts and venture builders in Berlin-Brandenburg team up to turn climate-tech research into ventures that can get funded.
- Application deadline: November 26, 2026
- Program dates: January 11 – February 19, 2027 (6 weeks)
- Location: Berlin, in JUNI Mitte and at NLND in Neukölln
- Time commitment: At least 15 hours / week
- Format: In person in weeks 1, 2 and 6, hybrid in between
Program details
6 weeks to a founding team.
From first match to Demo Day: find your co-founders, test your idea with real customers, and leave with a fundable GreenTech concept and a clear path to EXIST or BSS.
Week 1-2
Co-founder matching & opportunity space
You’ll find the people you want to build with. Attendance is mandatory.
- Get to know every idea and IP in the cohort, and the people behind them.
- Test your co-founder fit in different team setups.
- Commit as a team and pick one GreenTech opportunity to pursue.
- Draft your first problem statements.
Week 3-4
Customer validation
You’ll leave the lab and test your idea against the real market.
- Sharpen your problem statement and build your interview list.
- Run expert and customer interviews in your target market.
- Validate or kill your assumptions based on real evidence.
Week 5
Business model
You’ll take your first steps toward a business model and find out what it takes to get funded.
- Sketch your value proposition and get a first sense of your market.
- Explore possible business models and check IP feasibility.
- Map out your funding path toward EXIST or BSS.
Week 6
Pitch training, next steps & Demo Day
You’ll pitch your venture and leave with a clear plan for what comes next. Attendance is mandatory.
- Get individual pitch coaching and prepare your final pitch.
- Plan your next 90 days as a team.
- Pitch to JUNI’s network of science partners, companies and investors at Demo Day.
Selection
Who we're looking for.
Strong founding teams combine different strengths: the science, the market knowledge and the drive to build.
Which one are you?
The Science Lead.
You’re a scientist with a research-based GreenTech idea, with or without IP. You don’t need to be at a university right now.
The Industry Expert.
You know a GreenTech-relevant industry inside out and bring the network and market insight that research teams often lack.
The Venture Builder.
You bring a business or product background and first entrepreneurial experience, and you’re ready to build a venture around science.
* You can apply with or without an idea.
Applications
Ready to take the plunge?
Applications close November 26, 2026. The GreenTech Batch starts January 11, 2027.
Step 1: Apply
Submit your application by November 26.
Step 2: Interview
If you’re shortlisted, we’ll invite you to a short 20-minute interview.
Step 3: Decision
We select the cohort and let everyone know shortly after.
Coming Soon
Your program contact
Questions? Let's talk.
