A sustainable
energy solution

Midsummer manufactures silicon-free solar cells that are 90% lighter and have 90% lower CO2 emissions than traditional silicon-based solar panels.

Explore our products:

Which of our solar panels is right for your roof?

For bitumen and plastic membrane roofs

Midsummer BOLD

A flexible solar panel with record low weight, adapted for large roof surfaces. The product is sold as a retrofit on your existing roof or as a complete roof replacement.

For metal roofs

Midsummer SLIM

A combination of thin solar panels and a seamed metal roof. The product is sold as a complete roof replacement and is customised to the length of your roof.

For roof tiles

Midsummer WAVE

A wavy solar panel that follows the shape of roof tiles. The product is sold as a retrofit on your existing roof tiles or as a complete roof replacement.

Why choose Midsummer?

Swedish Developed

Midsummer’s solar cells are a Swedish innovation and are manufactured both in Sweden and Italy.

Minimal weight

With a minimal weight of only 3kg per square meter, our solar cells enable installation on roofs with weight restrictions without compromising the structural integrity of the roof.

Sustainable

Midsummer solar panels set the industry standard with the lowest CO2 emissions, only 6g per kWh—90% lower than traditional silicon-based solar panels, which average 40-60g CO2/kWh.

Recyclable​

Our silicon-free solar cells are not only 98% recyclable but also include 63% of materials from reuse, strengthening our contribution to a more sustainable future.

Efficient installation

Our solar panels offer easy and secure mounting without penetrating the roof’s waterproof membrane, enabling an installation speed that is 50% faster than traditional solar panels.

Easy maintenance

Our solar panels are designed for easy maintenance, allowing for maximum use of roof space. They are durable enough to walk on and are adapted for activities such as snow removal, making them a practical and sustainable choice for all types of climates.

Midsummer’s solar panels consist of thin-film solar cells of the CIGS type, which makes them thin, light, flexible and discreet. The solar panels are placed on different types of roofing material, e.g. sheet metal, roof tiles or roofing felt, where the end product becomes a discreet solar roof.

The solar cells are manufactured in our production facility in Järfälla with our own DUO system, which is the most widespread production system for flexible CIGS solar cells in the world. The solar cells are then assembled into finished solar panels, also in Järfälla. The solar panels are placed on different types of roofing material, e.g. sheet metal, roof tiles or roofing felt, where the end product becomes a discreet solar roof.

  • Our products are manufactured at our own production facilities in Järfälla outside Stockholm.
  • The manufacture of Midsummer’s solar roofs produces 90% less carbon dioxide emissions than traditional solar panels, according to a third-party reviewed lifecycle analysis (LCA) carried out in 2020. 
  • The solar panels are light, flexible and only 2 mm thick, and do not affect the appearance of your roof or the aesthetics of your house. The roof still looks like a regular roof, even when Midsummer products have been installed.
  • The solar panels do not contain any heavy glass or aluminium element, significantly reducing materials consumption.
  • Installation does not require any holes in the waterproofing layer of the roof. We do not screw or drill holes in the waterproofing layer, significantly reducing the risk of leaks.
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Our solar panels are mounted onto the surface, following the contours of the roof and are on top of the roof’s waterproofing layer. In other words, they are integrated with the design, but not integrated technically, which means that they can be applied to existing building materials. The result is a discreet solar roof.

We offer three products that are specially adapted for different types of roofing materials, such as roof tiles, sheet metal and bitumen.

Midsummer WAVE is a wave-shaped solar panel that follows the shape of your roof tiles. The product is suitable for Sweden’s most popular roof tiles Palema from Benders, Jönåker from Monier and Mjöbäck/Ekeby from S: t Eriks and is either sold as a retrofit on existing roof tiles or as a complete roof renovation.

Our product Midsummer SLIM is a combination of a folded sheet metal roof and discreet solar panels and is sold as a complete roof replacement.

Our product Midsummer BOLD is a solar panel that fits both flat and sloping roofs, for example with bitumen and plastic membranes as a base.

Our solar roofs can be installed on, for example, private villas, apartment buildings and industrial buildings. 

Yes, retrofitting is possible with both Midsummer WAVE and Midsummer BOLD It is a simple installation without affecting the waterproofing layer of the roof.

Midsummer WAVE is installed by placing it on top of the roof tiles. The panels are attached below a row of tiles and locked with clips at the bottom. Midsummer BOLD is fastened with discrete sheet metal strips that are screwed into plates and then welded to the roof material, for example bitumen or membrane roofs.

Midsummer SLIM can not be retrofitted but is sold with a complete roof replacement.

Midsummer SLIM has an output of 114,5 W/m², Midsummer BOLD 120 W/m² and Midsummer WAVE 110 W/m². 

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Get in touch

+46 (0) 8-525 096 10
Opening hours:
Monday-Friday 08.00-17.00
kundservice@midsummer.se

Elektronikhöjden 6
175 43 Järfälla

Organisationsnummer: 556665–7838

VAT nr: SE556665783801

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