About flexi biogas
biogas & climate smart solutions in africa.
- Flexi Biogas is a renewable energy innovation developed by Biogas International Limited, a Kenyan company dedicated to providing affordable biogas systems, off-grid energy solutions, and sustainable waste-to-energy technologies for households, farms, institutions, and businesses.
Founded in 2011 and headquartered in Nairobi, our company operates from an Eco Resource Centre (ERC) where we research, design, and demonstrate practical renewable energy technologies for rural and urban communities.
Our mission is simple: turn organic waste into clean energy while improving livelihoods and protecting the environment.
Our Story
For more than 15 years, our team has been researching and developing simple, affordable, and scalable biogas technology designed specifically for African conditions.
Through years of field testing and engineering, we developed Flexi Biogas digesters, a portable and prefabricated biogas system that converts animal waste and organic household waste into clean cooking gas and organic fertilizer.
- Unlike traditional brick biogas plants, Flexi Biogas systems are:
1. Portable and flexible
2. Quick to install
3. Affordable for rural households
4. Scalable for farms and institutions
5. Easy to maintain by local technicians
Our technology allows communities to reduce reliance on firewood, charcoal, and traditional fuels, creating healthier homes and more sustainable farms.
What We Do
At Flexi Biogas, we design and manufacture innovative clean energy technologies that solve everyday challenges faced by farmers and households.
Our product portfolio includes:
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1. Flexi Biogas Digesters – Portable biogas systems for homes, farms, and institutions
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2. Bio-Sanitation Waste Management Systems – Turning sanitation waste into nutrients
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3. Biogas & Solar Hybrid Dryers – For fruits, vegetables, and agricultural products
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4. Evaporative Coolers – Low-energy cooling solutions
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5. Chick/ Pig Brooders – Supporting poultry & pig farmers
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6. Climate Smart Farming – Sustainable food production
All our systems are designed using locally available materials, ensuring they can be assembled, installed, and serviced by local technicians.
At Flexi Biogas, we design and manufacture innovative clean energy technologies that solve everyday challenges faced by farmers and households.
Our product portfolio includes:
-
1. Flexi Biogas Digesters – Portable biogas systems for homes, farms, and institutions
-
2. Bio-Sanitation Waste Management Systems – Turning sanitation waste into nutrients
-
3. Biogas & Solar Hybrid Dryers – For fruits, vegetables, and agricultural products
-
4. Evaporative Coolers – Low-energy cooling solutions
-
5. Chick/ Pig Brooders – Supporting poultry & pig farmers
-
6. Climate Smart Farming – Sustainable food production
All our systems are designed using locally available materials, ensuring they can be assembled, installed, and serviced by local technicians.
Why Flexi Biogas Matters
Energy poverty remains one of the biggest barriers to development in many parts of Africa.
Millions of households still rely on firewood and charcoal for cooking, which leads to:
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- Deforestation
- Indoor air pollution
- Health risks for women and children
- Time lost collecting fuel
Flexi Biogas offers a clean, renewable alternative.
By installing a Flexi Biogas system, households can:
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- Convert animal manure and organic waste into cooking gas
- Save 3–4 hours per day previously spent collecting firewood
- Reduce household energy costs
- Produce organic bio-fertilizer for farming
- Reduce carbon emissions
Our goal is to make clean energy accessible to every household, farm, and institution.
Our Mission
Powering communities through sustainable energy solutions.
Our mission is to bridge the gap between organic waste and clean energy by providing simple, affordable, and reliable biogas technologies.
We empower households, farmers, schools, and businesses to produce their own renewable energy while improving livelihoods and environmental sustainability.
Our Vision
Clean energy in every home, one system at a time.
We envision a future where biogas becomes a mainstream energy source across Africa and beyond.
In this future:
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- Smoke-filled kitchens are eliminated
- Organic waste becomes a valuable resource
- Rural communities achieve energy independence
- Sustainable agriculture thrives
With every Flexi Biogas installation, we move one step closer to a cleaner, healthier, and more sustainable planet.
POWERING COMMUNITIES. PROTECTING THE PLANET.
We exist to bridge the gap between waste and energy. At Flexi Biogas, our mission is to make renewable energy a reality for households, institutions, and farms — no matter their size or location. By offering user-friendly biogas systems, we enable people to take control of their energy sources, reduce dependency on unsustainable fuels, and build healthier, more resilient lives. From kitchen leftovers to animal waste, we turn what many see as trash into a valuable, everyday solution.
CLEAN ENERGY IN EVERY HOME, ONE SYSTEM AT A TIME.
We envision a future where biogas is not the alternative — but the norm. Our goal is to expand the reach of clean energy to every corner of the continent, and beyond. In this future, smoke-filled kitchens are a thing of the past, organic waste is no longer wasted, and families thrive in energy-secure environments. With every system installed, we take a step toward a cleaner, fairer, and more sustainable world.
Living Off-Grid Biogas - Solar Demo Farm
Climate Smart Farms
Demo house
Biogas demo farm
Our Innovation & Patents
Flexi Biogas technology is protected by patents from:
Kenya Industrial Property Institute Patent
Biogas production from a flexible digester (Kenya).
ARIPO Regional Patent
African Regional Intellectual Property Organization.
These patents recognize our innovation in biogas production using flexible digesters, helping expand renewable energy access across Africa.
Meet Our Team
- Flexi Biogas is powered by a passionate team of engineers, technicians, and innovators committed to advancing renewable energy and sustainable agriculture.
Led by Dominic Wanjihia, our team works directly with communities, farmers, institutions, and organizations to deploy reliable waste-to-energy solutions.
Our technicians also train local installers, ensuring every system receives proper support and maintenance.
Dominic Wanjihia
Founder & CEO
Josephat Chege
Team Leader
Philip Lihanda
Demosite caretaker (Technical - Digesters)
James Musyoka
Technician - Dedicated to after-sales service and troubleshooting
Julius Onyango
Technician, Quality control and Trainer of Technicians (ToT)
George Mbuthia
Technician, T-Rex systems
Robert Wanjiku
Technician, Domestic systems specialist and ToT