Updated on January 28, 2024


Created on October 19, 2020

Green Heat Biogas Digester

Upcoming Update

Biodigesters equipped with Slurry Separation Technology (SST) designed for waste management.

Developed By
  1. Green Heat
Content Partners


Product Description

Green Heat Biogas Digesters are equipped with Slurry Separation Technology (SST), which allows the elimination of waste, recycle water, create dry fertilizer, and produces biofuel to supply the customer’s energy needs.

Users can obtain this product through a Pay-As-You-Go model or by renting the appliances in monthly installments.

The target region includes all Developing countries

Target SDGs

SDG 7: Affordable and Clean Energy

SDG 3: Good Health and Well-Being

Target Users (Target Impact Group)

Household, Small and Medium-sized Enterprises

Distributors / Implementing Organizations

Green Heat, Clean Cooking Alliance

Manufacturing/Building Method


Intellectural Property Type


User Provision Model

The biogas digesters are designed and built by Green Heat, after a free feasibility study conducted by the same company. Customers can request information through the company's website.

Distributions to Date Status

By 2017, 580 biogas digesters have been installed in Haiti and different countries across Africa.

Output energy product


Average daily biogas production (m3/day)


Description of waste source(s)

Human waste, animal manure and all organic detritus.

Waste input requirements (kg per hour or day)


Description of other input requirements

This product uses rainwater, wastewater and urine as water input.

Other input requirements (amount per hour)


System dimensions (m)

Sub-surface digesters can range from 4 to 50 m3

Design Specifications

Green Heat Biogas Digesters use Slurry Separation Technology (SST), which separates the slurry from water, creating dry fertilizer and recycling the water within the digester for the biofuel generation. Depending on the customer's specific needs and capacity, fixed dome or portable, flexible balloon digesters are available. Fixed domes are widely used by schools and institutions with waste management purposes, while flexible balloon digesters are commonly adopted in households with biofuel generation purposes. The biodigesters can use rainwater, wastewater, and urine as input. Additionally, the SST system can be implemented in older digesters. Green Heat aims to build personalized biogas digesters, adapted to the customer's needs and capabilities. The SST system can also be integrated into traditional biodigesters.

Product Schematics

Technical Support

Provided by the manufacturer.

Replacement Components



25 years

Manufacturer Specified Performance Parameters

This product targets to reduce water utilization by 80% with respect to other biodigesters, by recycling the water from the waste. The dry fertilizer created from the waste can boost crop yield by up to 270%. The energy saved by using biogas for cooking and heating is double than that of traditional digesters. Additionally, the use of biofuel generated by the digesters can mitigate or even eliminate the reliance on charcoal and wood, helping to reduce deforestation.

Vetted Performance Status



There is a minor risk of explosion from methane build up.

Complementary Technical Systems


Compliance with regulations


Evaluation methods


Other Information

Infographics of this product and working principles. More on the green heat biodigester

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