In rural Kenya, David is saving money by using GoSol solar oven to run his bakery.

Founding sponsor

Pilots implemented in Kenya in collaboration with World Vision

And in Tanzania with Global Ressource Alliance

Sustainable income generation,
for low-income people

Made possible with support from:

Founding Sponsor




Watch the video

What is Solar Concentration?

A simple magnifying glass is a solar concentrator, and can focus the sun’s light to one spot reaching high temperatures.

With high temperatures, we can do things like baking, roasting, purifying water — all with Free Solar Energy.

The problem with the magnifying glass is that it’s not enough power for commercial activity. We need more power! We can do this by making a lot bigger solar concentrators. The challenge is to keep costs low.

See in Video

How we do it


We switch from the magnifying lens to using mirror to make it cheaper. We bend the mirror slightly, so it concentrates the light.


To get more power we put many mirrors
on a row...

At the focal point, it gets really hot, up to 300°C.

We optimize everything there with software, so all the power is used to bake, roast, purify or dehydrate as much as possible.

All the tools and materials needed to build our solar concentrators are readily available and cheap.

Current Projects

We are currently piloting our solar concentrators in Kenya and Tanzania with Wärtsilä's sponsorship.

In 2016, in collaboration with World Vision Finland and World Vision Kenya, we implemented two pilot projects of solar baking and solar peanut roasting. The entrepreneurs adopted the tech successfully, and this year, with Wärtsilä's support, we are spreading our technology further in Kenya , and also Tanzania . It's exciting to see these entrepreneurs saving money, reducing CO2 emissions and increasing their productivity!

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Why do we do it

1. Income Generation

Solar concentration can power local economies in about 54 countries. Solar energy is available everywhere and our technology can be deployed without depending on heavy infrastructure, exotic materials or advanced skill sets.

2. Climate Change

Solar concentrators can displace massive quantities of carbon emissions in thermal industries of all sizes — without large scale clear cutting of forests, poisoning water tables or creating radioactive waste.

3. Women’s Empowerment

In many countries, women feel the burden of energy poverty most acutely: from fuel-wood collection, which is time-consuming and dangerous, to enduring cooking smoke. Solar thermal is easier, cleaner and provides energy to run small solar businesses.

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4. Education

We can reduce the biomass fuel-dependence that keeps children from attending school and spending time with their mothers. We also can train youth to become builders or solar entrepreneurs with baking, roasting or drying activities.

5. Local Economies

Our technologies can be built and maintained by local tradespeople and provide sustainable energy for local industry.

6. Deforestation

One single SOL4 model replaces as much as 9 tons of wood per year. In many areas solar concentration can make the difference between the regeneration of the ecosphere versus continued deforestation.

7. Health

By replacing charcoal, solar concentrators can reduce household air pollution, cook food more thoroughly, provide energy for water purification, and improve nutrition by preserving in-season produce with drying. Advanced application can power refrigeration,and sterilize hospital equipment.

8. Particulate Pollution

Particulate pollution from industry and biomass fires is a major health hazard world-wide and a major cause of ice-pack melt. Solar concentrators can replace fuels such as coal and biomass which are largely responsible for these emissions.

9. Peak Everything

Currently, our resource extraction rate doubles every 20 years. This is completely unsustainable. Solar Fire modules can be completely recycled and solar thermal can enable recycling-focused closed-loop economies.

How costs are kept low

The technology doesn't matter so much if it's not cost effective.

Read on

We lower the costs by designing everything to be built as locally as possible, with available materials, using skills and tools that local artisans, shops and builders have in most places in the world.

Local fabrication also means the systems can be maintained locally without expensive part replacements or sending technicians to remote locations. Local technology is particularly useful in hard to reach places, like many farms in the rural South, and so local maintenance is critical for durability, reliability and cost reduction.

We’re bringing this tech to Africa with our founding sponsor Wärtsilä and in cooperation with Wold Vision and their Weconomy program in order to prove the economics, adapt the technology better to the needs, and build education programs to scale-up.

We are Solar Fire Concentration Ltd

A social enterprise based in Finland with the vision to enable energy access for all. More about us.






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