Midsummer's solar panels are made in Sweden from a thin film (CIGS = copper, indium, gallium and selenium) on stainless steel. This makes them thin, light and flexible.
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 solar cells are manufactured in our self developed DUO machine in our factory in Järfälla outside Stockholm. This is the key to our efficient production. The solar cells are then assembled into finished solar panels, also in Järfälla.
Midsummer solar panels are suitable for most roofs, such as rooftops, apartment buildings, industrial buildings and roofs with weight restrictions.
Our product Midsummer SLIM is sold as a combination of a folded sheet metal roof and discreetly-designed solar panels. Our product Midsummer WAVE is suitable for 2-barrel roof tiles (Benders Palema and Monier Jönåker) and can be fitted on top of existing tiles or in the event of a replacement roof. Our product Midsummer BOLD is suitable for both flat and sloping roofs, for example with roofing felt and membrane as a base.
Midsummer WAVE is installed by placing it on top of the roof tiles and attaching it below a row of tiles and locking it in with clips at the bottom. Midsummer BOLD is attached with discreet sheet metal strips. These are screwed into plates which are then welded to the roof material, such as roofing felt or membrane roofs.
Midsummer SLIM is sold as a complete replacement roof.
No, Midsummer's solar cells are made in Sweden from thin film (CIGS = copper, indium, gallium and selenium), on stainless steel. This makes them thin, light and flexible.
A solar panel consists of a variety of materials and most of them we buy from reputable American, Japanese and European companies. The solar cell, which is the main component of the solar panels, has a light-absorbing layer that mainly consists of copper, indium, gallium and selenium. These input materials are purchased from selected suppliers in Japan, Austria and the USA, among others.
The silver on the front of the solar cell is purchased from companies in England and the USA. We have visited and worked closely with all of these companies that we work with for over 10 years. The materials we encapsulate the cell with are purchased from the USA, Japan and Italy. We have also visited these companies.
A solar panel consists of a variety of materials and most of them we buy from reputable American, Japanese and European companies. We do not use a component from China, but some material suppliers refine ultra-pure powder in China (eg purified copper from Zhejiang province, purified selenium from Guangdong and purified sulfur from Sichuan. Midsummer has both reviewed and made physical visits to these suppliers. Midsummer uses no material from Xinijang (as the report on Swedish Radio applied). All suppliers have signed the Midsummer Code of Conduct).
A solar panel consists of a variety of materials and Midsummer buys most of the materials from reputable American, Japanese and European companies. We assess that the risk of child or forced labor in these countries is very low.
Some of the materials where one could suspect that there is an increased risk are, for example, the powder raw materials used in part of our manufacturing process for the solar cells. For example Molybdenum (Mo) and Wolfram (W). As for W and Mo, our supplier buys it from its wholly owned American subsidiary "Global Tungsten & Powders". They also recover a lot of Wolfram from scrap.
Global Tungsten & Powders follows the "Responsible Minerals Initiative" (RMI) and is checked annually by RMI. The standard is called "Responsible Minerals Assurance Process". They are listed on RMI's website as an RMAP conformant company http://www.responsiblemineralsinitiative.org/conformant.../. Global Tungsten & Powders har produktion i USA, Tjeckien och Finland. De har nyligen investerat utvinning av Wolfram i Korea.
Yes, our solar panels are certified according to IEC 61215 and IEC 61730 by TÜV.
Yes, our solar panels are certified by TÜV. They have been tested in climate chambers, thermal cycling, snow pressure, hail, etc. according to current standards. Our solar panels pass all tests above standard and, above all, snow pressure, our panels pass far more than TÜV is able to expose them to. In addition, we have a number of installations on roofs in climates with snow and ice, most in Sweden, among others, in Nordingrå.
Absolutely, in collaboration with Hemma, we offer a green mortgage when you invest in solar cells. Read more here.
Midsummer guarantees 90% of the expected peak effect after 10 years and 80% of the expected peak effect after 25 years and provides a 10-year product guarantee. Garantier_Midsummer
Our solar panels are available in black.
Yes, you can walk on our solar panels with care. Clean shoes and safety equipment are a prerequisite.
Yes, we install throughout Sweden.
Yes, if you are interested in becoming an authorized reseller of Midsummer's products, please feel free to contact us here.
Since 1 January 2021, private individuals who choose to buy solar cell roofs can use the new green deduction of 15%, up to SEK 50,000 per year, and 50% on material and labor costs for installation of batteries or charging boxes. If there are more people in the household, the sum can double.
You can also use the ROT deduction of 30% for labor costs when installing solar panels. Unlike the ROT deduction, the green deduction can be applied to new properties, including those built during the past 5 years. This only applies to private individuals and properties that are connected to the electricity grid. Companies and tenant-owner associations cannot use the deductions.
In most cases, no building permit is required, provided that you choose to keep the roof's material and color. In cases where you want to change the material or color of the roof, a building permit may be required. Furthermore, some municipalities have requirements for building permits for solar panels. When or if you need a building permit thus differs from municipality to municipality. In addition, it can also vary depending on whether the house is located in a detailed planned area or not. Contact us and we will help to investigate whether you need to apply for a building permit for your house.
Shadow is a factor that can naturally affect electricity production. To handle this, we have designed our solar panels with a bypass diode between each solar cell, which makes the system more tolerant, unlike many other module types that have fewer diodes. If for some reason a cell is shaded, the bypass diode is activated and forwards the current to the next cell. Without bypass diodes, the current would have been drawn down into the shaded cell. Since the cells are connected in series, the current in the entire module would also be reduced to a lower level.
Electricity production is mainly controlled by solar radiation together with the direction and inclination of the panels. For Midsummer's panels, it generally applies that between 15-15.5% of incoming solar energy is converted to electricity.
To find out how much electricity your solar panels produce in total, you can easily read your inverter.
You can either consume the electricity that your solar cells produce yourself or feed it into the electricity grid. The electricity you do not use is automatically delivered to the electricity grid. This is called surplus electricity and you can sell it to an electricity trading company. The person who delivers surplus electricity is called a micro-producer, provided that your system is less than 43.5 kW and your main fuse is a maximum of 63 Ampere. It is important that you sign an agreement regarding the sale of your solar cell. The agreements that the electricity trading company offers vary, but you are usually reimbursed with the market price for the electricity sold. The market price is determined on the Nordic electricity exchange Nord Pool and is called the spot price. Some electricity trading companies offer spot prices with a small deduction to cover administrative costs for the service, while others offer a temporarily higher price against the requirement that you also buy your electricity from them.