The Kinjani Greenhouse
Grow from idea to climate-tech founder.
Africa's launchpad for the first generation of climate and nature-inspired innovators. Join the online programme to find your startup idea, sharpen it, and turn it into a real venture.
Next cohort starts 8 June 2026 · 100% online · Free to join
The climate crisis
One of the greatest challenges of our time. One of the greatest opportunities.
The climate crisis is set to reshape Africa and every industry — energy, agriculture, water, materials, waste. Where most people see a crisis, founders see the chance to build.
The next generation of African companies won't just adapt to climate change. They'll turn the response to it into economic and environmental regeneration. The Greenhouse exists to help you see that opportunity clearly — and act on it.
Why Africa, why now
Africa has the talent. What's been missing is the venture support.
We have the resources, the opportunity, and the world-class talent. What we've lacked is the financial and venture support that helps a founder take the first step — from an idea to a thriving startup.
Kinjani was built to close that gap: to bring together scientists, operators, and entrepreneurs solving real problems in the industries that matter most — and turn bold ideas into companies that can regenerate our African economies and our environment.
The Greenhouse is where we make that real — with people like you.
What you'll do
You won't learn the theory. You'll build a venture.
Over six stages, you learn by doing. Every stage ends in a concrete milestone — something you build for your own venture, not a hypothetical exercise.
Spot the opportunity
Learn to see climate challenges as business opportunities grounded in Africa's unique advantages.
Validate the problem
Test whether the problem is real by talking to the people who live it.
Find your customer
Discover who you're building for, and go deeper than assumptions.
Shape the solution
Develop a solution and test your riskiest assumptions.
Build a prototype
Turn the idea into something tangible, with help from AI tools to move faster.
Make your case
Leave with a clear pitch that opens doors with partners, funders, and supporters — plus very clear next steps.
And you won't do any of it alone — your community and the Kinjani team are with you at every stage.
Who it's for
The Greenhouse isn't built for one type of founder.
You don't need startup experience. You need curiosity and a problem worth solving. Climate startups need diversity — wherever you're starting from, you can bloom here.
If you're from a climate-vulnerable community or a region surrounding heavy industry, we especially encourage you to apply.
Scientists
Turning lab discoveries into real-world solutions.
Operators
Who understand supply chains and how industries really work.
Climate-vulnerable innovators
Living the daily reality of floods, drought, or mine waste — who see opportunity where others see crisis.
Entrepreneurs at any stage
Who want to start or grow a climate or nature-based idea.
Technical consultants & specialists
Ready to turn systems insight into scalable environmental innovation.
What you'll need
Low friction. High ambition.
All you need to start is a computer and internet access, a commitment to learning, and one big question you're determined to answer.
Amplify your ambitions by working alongside others who hold a high bar.
- Format
- 100% online
- Starts
- 8 June 2026
- Duration
- Six stages
- The prize
- A pitch event in August, with $2,500 in business and leadership coaching across five winners.
What comes next
The Greenhouse is the start, not the finish.
The Kinjani Lab
Top participants are shortlisted for the Lab — our venture-building programme offering returnable grants.
The Kinjani Community
Every graduate joins the community, with continued access to learning, talent, and visibility.
2025 Greenhouse winners
Big questions become real solutions.
Michèle Schiess
South AfricaA vortex entrainer retrofitted into effluent pipes; potential to cut harmful pollutants by 80%+ and sequester 20 MtCO₂e at scale.
Chantal Omondi
KenyaTurns Nairobi's waste cooking oil into B20 biodiesel, cutting fleet fuel costs 30% and keeping millions of litres of waste oil out of waterways.
Sara Usman
RwandaCarbon Smart Spaces, a material-intelligence tool cutting embodied carbon by 40–50 tons per 150 m² built.
Alimamy Bangura
RwandaA moringa-based nano-fertiliser and low-cost storage system improving yields up to 40% and cutting post-harvest loss 25%.
Why we built the Greenhouse
I kept seeing the same thing: incredible scientific talent and world-class ideas, but not enough support to turn them into scalable companies.
The industries with the greatest potential to drive climate impact and economic growth are right here in Africa. We have the resources, the opportunity, and the talent. What we've lacked is the venture ecosystem.
That's what Kinjani is built on — African soil, African opportunities, and African talent. The Greenhouse is where we make it real.
Ready to grow your idea?
The next cohort starts 8 June 2026. It's free, it's online, and it starts with you.