For all entrepreneurs big and small
We are breaking the cost barriers of solar thermal energy


Industry: Solving engineering and simulation challenges.

Maximize Impact Programs with CSR and NGO’s.

Emerging markets: Developing new hardware.

We are on a mission to make people’s lives richer, breathe easier and make the environment cleaner. Our software and our scalable hardware are supporting the transition towards a massive use of solar thermal energy.



Introducing and the Direct Solar Economy



Sponsors, Partners and Clients





Latest Updates


Announcing GoSol - UC Berkeley MDP Collaboration

Posted Friday 15 February 2019, by Urs Riggenbach

We are excited to announce the start of a collaboration with the MDP program at UC Berkeley, California. UC Berkeley’s Master of Development Practice (MDP) equips the next generation of...
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GoSol Solar Training Highlights

Posted Tuesday 12 February 2019, by Lorin Symington

We’re happy to share with you this video which shows some great moments from the Solar Entrepreneurship Training we conducted in Uganda with Plan International (Uganda) and SmartUp Factory Uganda....
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GoSol Evening Reception at Autodesk Gallery San Francisco, February 25th 2019

Posted Wednesday 6 February 2019, by Urs Riggenbach

GoSol & Autodesk Foundation invite you to join us for refreshments and learn about GoSol’s solar concentrators developed to empower millions of entrepreneurs and slow climate change. After...
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Starting in the Philippines with Carbon Cycle

Posted mercredi 6 février 2019, by Eva Wissenz

All the team is very happy to announce our new project in the Philippines with CarbonCycle, a recycling company and a renewable energy startup based in Cagayan de Oro City. Mr Dale Franco...
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The Inspiring Image of the Day !

Posted samedi 26 janvier 2019, by Eva Wissenz

We are happy to share this image sent by World Vision Kenya. These are solar baked buns produced and sold by our friends at Yier Ngima in Siaya, Kenya. This group...
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Indigenous Suruí using the SOL5 & Dehydrator in the Amazon

Posted Saturday 19 January 2019, by Will Cleaver

The first phase of our project in Brazil with Forest Trends to empower indigenous Suruí peoples with solar thermal energy shows a great success. Here are a few insights on this phase! Local...
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SOL5 Heading for Production

SOL5 Available for Pre-Order Now!

After overwhelming success during our piloting phase 2016-2017 our SOL5 is now available for pre-order.

Interested buyers can pre-order and get notified when the product is availabelf or sale.


Learn more & pre-order


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We have developed our technology and method by seeking real solutions for the entrepreneurs we worked with in the field. Learn more about our achievements.



Who We Are

We provide engineering R&D, design, prototyping and consultancy services to industry. We work with CSR departments and foundations to bring solutions adapted to low-income contexts in partnership with local and global non-profits. After successful piloting supported by Wärtsilä and Autodesk we are now accepting pre-orders for the international launch
of our SOL5 Solar Oven and Solar Roaster. is run by Solar Fire Concetration Ltd, a social enterprise based in Finland with the vision to enable energy access for all.

More about us.