Updated on December 27, 2023


Created on August 27, 2015

AEST Agricultural Waste Charcoal Briquettes

Upcoming Update

Distributed in Uganda, AEST briquettes are made from various recycled agricultural wastes and ready for a single use.

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Product Description

Made and sold by Appropriate Energy Saving Technologies Limited, AEST Agricultural waste briquettes are charcoal briquettes from various recycled agricultural wastes.

AEST is based in Soroti, Uganda.

Target SDGs

SDG 7: Affordable and Clean Energy

SDG 3: Good Health and Well-Being

Target Users (Target Impact Group)


Distributors / Implementing Organizations


Manufacturing/Building Method

Mass produced using a specially constructed motorized extruder using an old meat grinder.

Intellectural Property Type

Select Type

User Provision Model

Women in Uganda distribute the briquettes. Customers can come to the local shops, or may go straight to the production site to purchase them in Uganda. AEST also takes orders for mass quantities.

Distributions to Date Status

Over 50,000 kg of charcoal. Over 1,000 individual households, 2 orphanages, 15 schools, 40 restaurants, and 10 hotels have used this product.

Material composition

Agricultural waste

Higher heating value (MJ/kg)


Types of primary pollutants


Design Specifications

Diameter: 5 cm Length: 20 cm Weight (kg): 0.05 - 0.10

Product Schematics

Technical Support

Provided by the manufacturer

Replacement Components

Single use product.


N/A, single use product

Manufacturer Specified Performance Parameters

Smokeless and sootless and 40-50% energy conserved.

Vetted Performance Status



Guidelines provided by AEST must be followed when manipulating the product.

Complementary Technical Systems

AEST also produces and distributes its own clean cooking stove to go with the briquettes it produces to enhance the efficiency and reduce emissions.

Academic Research and References

O’Neill, M., Wagner, A (2017). Wear-Resistant Extrusion Auger for the Production of Charcoal Briquettes from Agricultural Waste. Mechanical Engineering Senior Thesis. Santa Clara University.

Wang, L (2016). The identification and validation of case hardening for extending charcoal briquette extruder lifespan. Massachusetts Institute of Technology. Department of Mechanical Engineering.

Further academic research is here.

Appropriate Energy Saving Technologies. 2019. Crunchbase. 2019.

Compliance with regulations


Evaluation methods

MIT D-Lab has conducted various tests on the briquettes, including: moisture content, ash content, indoor air quality measurements, and emissions. AEST also conducted field testing to gain feedback from the community to determine the likelihood of the product being adopted by the communities.

Other Information

AEST's awards and recognition here.

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