Midsummer DUO

More efficient process, less environmental impact

Midsummer DUO is a ready-made production system for the mass production of cadmium-free thin-film solar cells. With a compact design aimed at high capacity, reliability and excellent materials utilisation, Midsummer DUO is unchallenged in the manufacture of flexible thin-film solar cells. The efficient process results in products with a CO2 footprint nearly 90% lower than those of conventional solar panels. As a customer, you will have the opportunity at the Midsummer factory to test the system and confirm performance prior to delivery.

Cost-effective technology

Thanks to our unique process, Midsummer can offer some of the lowest manufacturing costs for thin-film solar cells, even in small-scale production. The 156×156 mm metal substrates pass through 25 successive separate process chambers. Here, the various layers of thin film are deposited at a production rate resulting in a completed solar cell every 20 seconds.

Minimal risk of contamination

Midsummer DUO deposits all thin-film solar cells layers in an unbroken vacuum chain. As the cell does not leave the vacuum environment between the stages of the process, the risk of contamination and thus also the requirements for the surrounding clean room are minimized.

Traceability in production

Each solar cell has a unique ID, which leads to a large amount of process data for each individual cell. This enables continuous quality control and process development, so the customer can feel assured. This is an advantage in research, where all deviations in a process can be traced to cell level.

Tech specs

Length: 6,40 m


Height: 2,20 m

Weight: Ca 8500kg

Output: 5MW per year

Substrate size: 156 x 156 mm

Efficiency: 81kW

“Midsummer DUO is our flagship. It's compact and designed for optimum performance. Midsummer DUO is the only machine in the world that can mass produce flexible CIGS solar cells on a commercial basis.”

Maria Huttunen, Design Manager

Do you want to know more about our machines?

If you lack any information about Midsummer DUO or Midsummer UNO, you are welcome to contact us.

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Get in touch

+46 (0) 8-525 096 10
Opening hours:
Måndag-fredag 08.00-17.00

Elektronikhöjden 6
175 43 Järfälla

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