Rethinking Biogas Systems

Flexi Biogas Systems

Innovative Green Energy Solutions
for Domestic & Large scale use

Talk to us today to learn more!


With over 35 years of research and development, we have arguably the most efficient biogas design in the world.




These are large scale systems built according to energy demand need. They are best applicable for schools, farms, hotels, churches, markets, childrens homes and areas with high energy demand.



Standard model & Extra Large model

These are systems designed for household energy demands for daily use. They are installed in as few as 3 hours and starts producing gas in as little as 3-5 days, it runs on any biodegradable material with no need for a a cow or livestock.



Human Waste Management systems

The Bio-San-Gas toilet is a Bio-sanitation toilet system that provides a clean hygienic solution whilst producing biogas and a rich fertilizer bio-fertiliser. They are prefabricated and assembled on site in a few hours.


What comes out the biogas process is liquid filled with ready to absorb minerals/ nutrients for both plants and animals.
It can be used for top dressing/ folia application and also works as an extreme effective pest repellent.


In order to to effectively utilize all the biogas produced, we have developed other products such as biogas ovens, water heaters, biogas brooders and more.


As we grow, we are continuously innovating new methods and products that are better, more efficient and simpler to use.

Chicken Brooding – Domestic

An elevated enclosed brooding box containing the day old chicks traps the rising heat from a biogas fueled digester. The chicken droppings collects at the bottom of the raised brooding cage and it’s taken back to power the digester.

Chicken Brooding – Commercial

As opposed to heating the air in the brooder room using charcoal stoves, we have a floor heating system that creates a 33° – 35°warm air cushion 8 – 12 inches high over the heater floor area.
The system comprises of heated water being channeled through a piped grid network on or embedded in the floor of the brooding room.

Drying Fruits & Vegetables

The Flexi biogas dryer is powered by biogas and the peelings and cuttings from the fruits and vegetable is what powers the biogas plant.
What comes out from the biogas system is rich organic fertiliser that goes back to the farm.
Here’s how it works.

Why Flexi biogas


Same day instalation

Our systems are prefabricated and installation is in a few hours

Quick Startup

You can start using gas within 3-5 days after installation. Full production is realized within 7-14 days.

Uses any bio-degradable materials

Flexi systems run on any bio-degradable matter. High calorific feedstock produces more gas.

unmatched efficiency

FlexiTech employs “True Cross-flow” fermentation to ensure that feedstock is fully digested.

Easy to upgrade

Easily upgrade to a larger model when you outgrow your energy needs.

Dedicated customer support

Our customer support is always available to answer your questions and queries.

What we have been up-to

From Invasive Cactus to Clean Energy: Dol Dol’s Green Transformation

From Invasive Cactus to Clean Energy: Dol Dol’s Green Transformation

Earlier this year, we embarked on a transformative journey in Dol Dol, Laikipia County, installing 8 domestic biogas systems to harness the power of invasive opuntia cactus. Through the support of our partners, we’ve introduced innovative solutions like cactus choppers, unique beehives, and vertical gardens, creating a self-sustaining ecosystem that promotes clean energy, organic farming, and food security. Learn more on how we explore how these initiatives are fostering a greener, more sustainable future for the community.

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Empowering Communities with Clean Energy this Christmas!

Empowering Communities with Clean Energy this Christmas!

Experience holiday joy with clean energy! Our collaboration with Aga Khan Foundation brightened 35+ households in Kirinyaga and Kwale. Through Flexi Biogas, 15 families in Kirinyaga and 20 in Kwale enjoy sustainable, clean energy. This initiative provides free energy and a sustainable source of organic fertilizer for greener agriculture. Celebrate with us. Explore our gallery for installations and the smiles of our beneficiaries.

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Empowering Nairobi Dairy Farmers: A Flexi Biogas Success Story

Empowering Nairobi Dairy Farmers: A Flexi Biogas Success Story

Nairobi County Government in collaboration with Flexi Biogas recently implemented a transformative biogas project that is changing lives in remarkable ways in Nairobi.
We proudly installed 5 domestic Flexi Biogas systems for 5 model farmers, and we’re excited to share the success story of one extraordinary farmer, Mary Wainaina from Dagoretti, Nairobi.

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CopyCat Farming Model

CopyCat Farming Model

Farming is no longer just a job; it has become a lifestyle. Now climate smart farming offers new innovations and improvements upon traditional methods. Climate Smart Farming is leading the way towards a more sustainable food production. This revolutionary method...

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Flexi Biogas Solutions in Togo

Flexi Biogas Solutions in Togo

In collaboration with the National Agency for Grassroots Development Support (ANADEB) in Togo , we have installed 10 flexi biogas units that will serve as a pilot project with the objective of replacing wood-fuel as a source of energy. The initiative is in effect...

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Ahero Town’s Biogas Plant

Ahero Town’s Biogas Plant

The County Government of Kisumu is aiming at 0 waste to dumpsite in a  #circulareconomy model where all the #waste gets turned to valuables.   Here we are managing 1 ton of #organic waste daily at Ahero Market, waste that could have otherwise ended up getting dumped...

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Women in Uganda Embrace Flexi Biogas

Women in Uganda Embrace Flexi Biogas

Kenyan Biogas Technology is Transforming Lives for families in Uganda. For years, Caroline and most of her neighbours have had to cut down trees 🌳 so they could prepare meals for their families. Once the #flexibiogas units were installed, all the families now...

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Grey water is basically soapy water and does not contain a lot of pathogens.
We use Effective Microorganisms {EM} to break down solids, soaps, destroy any undesirable bacteria & pathogens, prevent / remove any foul odours, and enhance the quality of the water which can now be used for irrigation.

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What our clients say

Flexi biogas is not just about an amazing invention that produces tons of gas but some clever uses of the gas and the bio-fertiliser which nutrifies the plants and improves gardening.
Paula Kahumbu

CEO, Wildlife Direct

Thanks to the digester, women no longer have to collect firewood, but can use the biogas from the digester for cooking. Plus the waste product from the system is an excellent fertiliser..
Andrew Amadi

Business Developing Consultant, Biogas International Limited

This  is one of a kind biogas system; easy to install and extremely efficient. I love it!
Chris Nzuve

CEO/ Director, Bigartta Group

Our Partners

Kenya Association of Manufacturers
Pwani University
Ngare Ndare Forest Trust
Moi University
Kenya Biogas Program
Indian Institute of Technology
Egerton University

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Flexi Biogas