Updated on January 22, 2024


Created on September 29, 2018

Sparky Dryer

Upcoming Update

Sparky Dryer is a food dehydrator that that runs on solar power and harvest waste.

Tested By
  • Sparky Social Enterprise Ltd.
Content Partners


Product Description

Sparky Dryer is a low tech thermodehydrator designed by Sparky Social Enterprise Limited. The dryer is powered by harvest waste and solar energy and therefore has zero carbon emissions. The Sparky Dryer dehydrates 5 times faster than solar dryers, and 10 times faster than open sun drying method while still maintaining the nutrients in the food. In addition, it can dry up to 50 kg of produce within 5 hours with only 2 kgs of bio-fuel.

Target SDGs

SDG 1: No Poverty

SDG 2: Zero Hunger

Market Suggested Retail Price


Target Users (Target Impact Group)

Household, Community, Small and Medium-sized Enterprises

Distributors / Implementing Organizations

This product is currently being distributed directly to clients by Sparky Social Enterprise Limited.

Competitive Landscape

Manufacturing/Building Method

This product is manufactured to demand in Uganda.

Intellectural Property Type

Select Type

User Provision Model

Users can obtain the product from the Sparky website and Sparky Dryer Enterprise Limited Facebook page. Orders can be made via social media or during Sparky Dryer's farmer outreach and product marketing programs.

Distributions to Date Status

7 Sparky dryers have been sold as of August 2018.

Drying capacity (lbs/m³)


Drying duration (hr)

2 – 5 hrs

Load capacity (m³)

Varies per unit

Operating temperature range (°C)

40-70 °C

Temperature control


Number of trays

5-8 trays

Materials of construction

Aluminum, Stainless Steel

Design Specifications

The Sparky Dryer is designed to the following specifications: first, the outer casing is made out of aluminum while the inner parts of the dehydrating chamber is made of stainless steel for efficient heat distribution. Next, the produce to be dried is placed on the stainless steel mesh. The biomass fuel is housed at the bottom of the dryer on a special container with a catalytic converter preventing harmful gases from being released during the drying process. Finally, the inner walls of the dryer are thickly insulated to prevent heat loss to the surroundings for maximum efficiency. The dryer comes with 1 stove, 8 trays for the big size dryer, and 5 trays for the small size dryer.

The solar energy stored in the battery can dehydrate food in 5 hrs, extending food shelf life from 2 days to more than 6 months. The complete set of the dryer comes one 12V 10w solar panel, 1 12V 7AH Battery, and a 7-meter connecting cable.

Product Schematics

Technical Support

Provided by the manufacturer

Replacement Components

The aluminum and steel frames can be replaced using locally available materials.



Manufacturer Specified Performance Parameters

Manufacturer specified performance targets: include fast drying, fuel-efficient, and zero carbon emissions.

Vetted Performance Status



Potential hazards related to the operation of this product include the handling of electrical equipment and accidental burning.

Complementary Technical Systems

Reliable access to sunlight is required to charge this product. The manufacturer sells two versions of the Sparky Dryer: 1) Sparky Dryer Large, and 2) Sparky Dryer Small.

Academic Research and References


Compliance with regulations


Other Information

Additional videos and pictures of the Sparky Dryer product and business can be found on the Sparky Dryer YouTube channel, Sparky Dryer Instagram page, and Sparky Social Enterprise Limited Facebook page. BBC News Product Specifications YouTube Video  

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