SolarisKit, the first thermal sensor that can be “packaged” and assembled by anyone who needs it

Dundee-based startup SolarisKit has developed a kit thermal collector kit that promises to provide cheaper access to hot water in Rwanda.

The company was founded by mechanical engineer Dr. Faisal Ghani in 2019, with the aim of providing a affordable, durable and practical solution for water heating after reading a magazine on the use of energy in Rwanda.

SolarisKit recently completed the Royal Bank of Scotland’s three-month Climate Entrepreneur Accelerator program. RBS has entered into a corporate partnership with SolarisKit as its first UK customer, with plans to install the thermal collector at its Gogarburn headquarters in Edinburgh.

the “S200” thermal sensor Kit developed by Solaris is one of the easiest and cheapest to install in the world, according to the team, and product testing will begin in June and 80 units have already been shipped to Rwanda.

According to Dr. Ghani, it works on the same principles as current solar thermal collectors: solar radiation is attenuated by side panels made of high-transmission solar glass.

The radiation strikes an absorber coil suspended within, causing the absorber wall to rise in temperature, up to 70 degrees in direct sunlight. Water circulates through the collector, through a small pump, to transfer thermal energy from the absorber wall to the fluid by forced convection.

Dr Faisal Ghani

The prismatic geometry of the solar collector allows for passive tracking of solar radiation, elimination of heat loss from the absorber, and the ability to self-assemble on site, thereby reducing manufacturing and transportation costs, adds Ghani.

Assembly. You can see a demonstrative video on its assembly.


Currently, the team has the capacity to produce 20,000 kits per year with the ambition to reduce global carbon emissions by one billion kilos in five years.

SolarisKit said it plans to support rural communities in India, and Dr Ghani hopes to expand the business in the coming months.


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