Updated on January 25, 2024


Created on August 18, 2018

SOL5 Oven

Upcoming Update

The Sol5 Oven is a solar powered multipurpose heat concentration dryer that can be used for roasting, baking or dehydrating agricultural produce.

Developed By
  1. GoSol Solar
Content Partners


Product Description

The SOL5 Oven is a 3.5 kilowatts multipurpose solar concentration device designed by the GoSol.Solar team. It is a fuel-less and smokeless innovation that can roast, bake or dehydrate agricultural produce making it clean and affordable to marginalized communities.

Target SDGs

SDG 2: Zero Hunger

SDG 7: Affordable and Clean Energy

Target Users (Target Impact Group)

Community, Small and Medium-sized Enterprises

Distributors / Implementing Organizations

In low-income regions, GoSol Solar is working with sponsors, foundations and NGO’s to train and capitalize local artisans to supply and maintain the SOL5. For higher income regions they will be launching a lighter-weight SOL5 for application developers, entrepreneurs and solar enthusiasts. Currently GoSol Solar has partnerships and sponsorship agreements with Tampere University of Applied Sciences, GreelTech, Autodesk, World Vision, Wartsila, Silicon Valley, Global Resource Alliance, The Deloitte Foundation, Humanitarian & Development Consortium (HDC South Sudan), Plan International and SmartUp Factory Uganda. The Kenya piloting was Sponsored by Wartsila corporation, in partnership with Autodesk Foundation and in cooperation with World Vision Finland (Weconomy program) and World Vision Kenya.

Competitive Landscape

Direct competitors include Solar Drier - Model SD 22-3 and SunWorks Solar Food Dryer.

Manufacturing/Building Method

Batch production based on demand.

Intellectural Property Type

Select Type

User Provision Model

Users can pre-order the product from GoSol Solar website or acquire through NGOs and sponsorship impact programs.

Distributions to Date Status

15 machines are currently under a pilot project in Kenya and Tanzania.

Drying capacity (lbs/m³)


Drying duration (hr)

Dries 20kg of tomatoes in 8 hours.

Load capacity (m³)


Operating temperature range (°C)

Maximum operating temperature of 300oC

Temperature control


Number of trays

Varies with application. Can hold 28 trays when drying and 4 trays when it comes to baking bread.

Materials of construction

Metallic and aluminium foil chamber

Design Specifications

Design specifications:

  • The SOL5 captures direct sunlight and turns it into heat by concentrating the light to one place.
  • The solar concentrator is rated at 3.5 kilowatts.
  • Maximum heating is at a temperature of 300oC.

Product Schematics

Technical Support

GoSol solar provides technical support and product inquiries on its website. On implementation, GoSol Solar is training local people on operation and maintenance so that they can provide technical support to the local community. The oven has been fabricated using local materials thus making its maintenance simple and sustainable

Replacement Components

The Solar oven is made locally using local materials therefore replacement components are easily available.



Manufacturer Specified Performance Parameters

Performance targets: Roasting:

  • Can roast Peanut, Coffee, Cocoa / Cacao, Cashew and more.
  • No more burnt taste
  • Regulated temperature
  • Roasts 16kg of peanuts in 3 hours
  • No fuel costs
  • Can bake 500 cookies per day, 16 breads each batch
  • Up to 300°C baking temperature
  • Even heat distribution for high quality bakes
  • Immune to blackouts and brownouts (requires sunlight, but the sun doesn’t charge)
  • No fuel costs
  • Can dehydrate fish, fruits, vegetables
  • Dehydrates 20kg of tomatoes in 8 hours
  • Faster drying method
  • Clean dehydration process (no more bugs)
  • No fuel costs

Vetted Performance Status



No specified safety precautions.

Complementary Technical Systems

GoSol Solar offers a range of engineering services that include web and IT integration, complex planning, emerging market piloting, and documents for investors and clients. They also offer numerical analysis, thermal integration with PID, and CAD/CAM simulations for solar and thermal projects.

Academic Research and References

None found.

Compliance with regulations


Other Information

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