Midsummer
Midsummer is a Swedish Nasdaq First North Premier-listed manufacturer of cadmium-free CIGS thin-film solar cells and lightweight solar roof systems (WAVE, SLIM, BOLD), plus DUO/UNO production equipment, serving residential, commercial, institutional, and equipment-buyer customers across Europe, Asia, and South America.
- Company typePublic
- Founded2004
- HeadquartersStockholm, Sweden
- Headcount11–50
- GTM typeB2B and B2C
- OfferingHardware or Manufacturing
What Midsummer does
Midsummer AB is a Swedish publicly-listed (Nasdaq First North Premier) solar energy company founded in 2004 that develops and manufactures cadmium-free CIGS (Copper Indium Gallium Selenide) thin-film solar cells on flexible stainless steel substrates. The company operates two distinct business lines. The first is a finished-product business selling lightweight (roughly 3 kg/m²) CIGS solar roof systems under three sub-brands: Midsummer WAVE for two-kupade roof tiles, Midsummer SLIM for standing seam metal roofs, and Midsummer BOLD/BOLD-S for flat bitumen and membrane roofs, with claims of 6g CO2/kWh lifecycle emissions, 90% lower weight, and 50% faster installation versus conventional silicon panels. The second is the Midsummer Machinery division, which sells DUO turnkey production systems (one cell every 20 seconds, 5MW output per machine annually) and UNO research systems to solar cell manufacturers globally.
The company's revenue mechanics combine quote-based direct sales of solar roof systems to Swedish homeowners and commercial customers, certified installer and OEM partnerships (Soprasolar/Soprema, Katepal, Imperalum), regional distribution (Eco On in Thailand), and lumpy B2B equipment contracts — most notably with Saab for a 100-200MW CIGS factory in Colombia. Midsummer manufactures at its Järfälla headquarters and a 50MW Bari (Modugno), Italy facility, with a 200MW megafactory planned in Flen, Sweden supported by a €32M EU Innovation Fund grant, plus a newly established Colombian subsidiary. The business is capital-intensive: company disclosures reference negative EBITDA across 2021-2025 and multiple rights issues (notably a SEK 175M issue in November 2025 paired with debt conversion) to fund factory scale-up. Midsummer serves residential, commercial/industrial, institutional (Svenska Kyrkan, IKEA Thailand MoU), automotive (Scania hybrid trucks), and infrastructure customers (autonomous aircraft panels, offshore solar in the Netherlands, a Bangladesh textile factory financed by a global clothing brand).
Midsummer firmographics
Firmographics- Name
- Midsummer
- Legal name
- Midsummer AB
- Website
- https://midsummer.se
- Company type
- Public
- Founded year
- 2004
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Midsummer is a Swedish Nasdaq First North Premier-listed manufacturer of cadmium-free CIGS thin-film solar cells and lightweight solar roof systems (WAVE, SLIM, BOLD), plus DUO/UNO production equipment, serving residential, commercial, institutional, and equipment-buyer customers across Europe, Asia, and South America.
- Ownership category
- akta.pro rank
Midsummer industry classification
Industry- Product category
- Building-integrated thin-film solar photovoltaics
- NAICS
- Rolling Mill and Other Metalworking Machinery Manufacturing (333519)
- SIC
- Metalworkg Machinery & Equipment (3540), Prefabricated Metal Buildings & Components (3448)
- akta.pro primary industry
- Solar PV Module & Cell Manufacturing (Crystalline, Thin-Film) (EUAMAHAA)
- akta.pro secondary industries
- Solar Roofing & Roof-Mounted PV Systems (IMADAFAO), Solar Plant Components Supply & Manufacturing (Modules, Cells, Wafers, Mirrors, Heliostats) (EUACAGAK), Metal Roofing Systems (IMADAFAB)
Keywords
Where Midsummer is headquartered
LocationHeadquarters
- HQ city
- Stockholm
- HQ country
- Sweden
- HQ region
- Europe
Offices4 records
Markets served
Midsummer business model
Business model- GTM type
- B2B and B2C
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Technology or R&D, Infrastructure, Marketing or Sales
Revenue model
- Solar Roof Products: Sale of complete solar roof systems including Midsummer WAVE (roof tiles), SLIM (metal roofs), and BOLD (flat/membrane roofs). Products sold as complete roof replacement or retrofit on existing roofs. Includes installation services.
- Solar Cell Manufacturing Equipment: Sale of DUO and UNO production systems for manufacturing flexible CIGS thin-film solar cells. Customers include manufacturers in Asia, Europe, and emerging markets. Major orders include equipment for Colombia factory (Saab offset project) and customers in China, Russia, Portugal.
- Module Assembly Lines: Sale of module assembly lines including laminators, screen printers, and automated module assembly lines for connecting individual solar cells.
- Aftermarket and Accessories: Batteries for energy storage and electric vehicle chargers offered as additional components for Midsummer systems.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Multi-year contract | Midsummer BOLD (European manufacture) |
| Unit Pricing | Multi-year contract | Midsummer BOLD-S (Asian OEM) |
| Unit Pricing | One time/ perpetual license | Midsummer BOLD Complete Roof Replacement (Sweden) |
| Unit Pricing | One time/ perpetual license | Midsummer BOLD Installation (Sweden) |
| Unit Pricing | One time/ perpetual license | Midsummer SLIM Complete Roof Replacement (Sweden) |
| Unit Pricing | One time/ perpetual license | Solar Panel Power Output |
Go-to-market motion4 records
Distribution channels6 records
Marketing channels8 records
Midsummer product offering
Product offeringCore offering
Midsummer develops and manufactures cadmium-free CIGS thin-film solar cells on flexible stainless steel substrates, sold as three building-integrated solar roof product lines (WAVE for roof tiles, SLIM for standing-seam metal roofs, BOLD/BOLD-S for flat bitumen and membrane roofs). The Midsummer Machinery division separately sells DUO turnkey and UNO research production systems to solar cell manufacturers worldwide, plus module assembly lines.
Product overview
Midsummer is a Swedish solar energy company offering CIGS thin-film solar products with three main solar roof product lines—Midsummer WAVE for roof tiles, Midsummer SLIM for metal standing seam roofs, and Midsummer BOLD/BOLD-S for flat bitumen and membrane roofs—alongside the Midsummer Machinery division providing DUO and UNO production equipment systems for flexible CIGS solar cell manufacturing. The company manufactures in Järfälla, Sweden and Bari, Italy, with global equipment sales, and was founded in 2004.
Differentiator
Problem solved
Functional benefit
Brands
- Midsummer WAVE: Wavy solar panel that follows the shape of roof tiles, designed for two-kinked roof tiles from manufacturers like Benders, Monier, and S:t Eriks. Can be installed as retrofit or complete roof replacement.
- Midsummer SLIM
- Midsummer BOLD
- Midsummer BOLD-S
- Midsummer DUO
- Midsummer UNO
Products and services
- Midsummer WAVE Wavy CIGS thin-film solar panel that follows the shape of two-kupade roof tiles, designed for residential pitched roofs. Can be installed as retrofit on existing roof tiles or as part of a complete roof replacement.
- Midsummer SLIM Ultra-thin CIGS solar panel combined with standing seam metal roofing, providing aesthetic solar integration for metal roofs. Sold as complete roof replacement, adaptable to roof lengths from 865mm to 4,025mm.
- Midsummer BOLD Ultra-lightweight and flexible CIGS solar panel for flat roofs, bitumen and plastic membrane substrates. 330W capacity, 127W/m² efficiency, 2.9 kg/m² weight, 6g CO2/kWh lifecycle, 25-year warranty. Sold as retrofit or complete roof replacement.
- Midsummer BOLD-S CIGS solar panel manufactured in collaboration with an Asian OEM partner for global demand. 500W capacity, 150W/m² efficiency, 1.7 kg/m² weight, 12g CO2/kWh lifecycle. Designed for flat and membrane rooftops.
- Midsummer DUO Turnkey production system for mass production of cadmium-free flexible CIGS thin-film solar cells. The most widespread production system globally for flexible thin-film solar cells, producing one completed solar cell every 20 seconds with 5MW output per machine per year.
- Midsummer UNO Research system for thin-film solar cell R&D, allowing researchers to create complex test series that run unmanned and automatically, with bar-coded substrates and database-tracked process parameters and different recipes per sample.
Quantifiable outcome
- 6g CO2 per kWh over entire lifecycle - 90% lower than traditional silicon panels (40-60g CO2/kWh)
- +6 more outcomes
Companies that use Midsummer
Customer profileNamed customers8 records
Segments5 records
Ideal customer profiles4 records
Midsummer technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Midsummer partnerships and signals
Strategic signalPartnerships
15 partnerships are on record, tiered minor and core.
- IKEA ThailandminorMoU between Midsummer Siam and IKEA Thailand to inspire sustainable living in Thailand. Aims to make sustainable home solutions more visible and accessible.
- SaabcoreCollaboration with Saab for establishing a 100-200MW CIGS solar module factory in Colombia as part of Saab's state-backed offset commitments. Midsummer will supply production equipment and technical expertise. Three DUO machines already shipped as of December 2025.
- National Research Council (CNR) and Consorzio HypatiacoreResearch partners in Italian CIGS-perovskite tandem cell development project. Total project budget €7.5 million. Goal to surpass silicon cell efficiency using quantum dot technology.
- Eco On (Thailand)minorDistribution agreement with Thai company Eco On for Midsummer products in Thailand market.
- Chulalongkorn University (Thailand)minorCollaboration between Midsummer Siam and Chulalongkorn University's architecture faculty in Bangkok to promote climate-positive architecture. Launching solar-powered bus shelter.
- Svenska Kyrkan (Swedish Church)minorSwedish Church selected Midsummer as solar roof supplier for their sustainability initiatives.
- Soprasolar (Soprema, France)coreCollaboration with French roofing material manufacturer (one of world's largest) to integrate Midsummer CIGS cells into Soprasolar roofing membranes. Creates new market for solar roofs on weak/flat structures.
- International Iberian Nanotechnology Laboratory (INL)minorOrder for UNO research machine from Portugal's INL for thin-film solar cell research applications.
- Katepal (Finland)minorPartnership with Finnish roofing material manufacturer for market access in Finland.
- UCLA (University of California Los Angeles)minorResearch collaboration on perovskite-CIGS tandem solar cells achieving 24.9% efficiency. Academic research partnership for advanced cell technology.
- HemmaminorPartnership with Hemma offering green mortgages with discount for customers installing Midsummer solar roofs. Enables affordable financing through reduced interest rates.
- Resurs BankminorPartnership with Resurs Bank offering green loans with favorable rates for Midsummer solar roof installations.
- Imperalum (Iberian Peninsula)minorPartnership with Imperalum for building-integrated solar products on the Iberian Peninsula.
- Rusnano (Russia)minorFramework agreement with Russian technology company Rusnano for production line sales. First production line sold under this agreement.
- Sunflare Inc (USA/China)minorLong-term partnership with California-based Sunflare Inc regarding establishment of solar cell production facilities and distribution of integrated solar cell products in USA and China.
Scale indicators12 records
Recent moves11 records
Expansion highlights6 records
Midsummer competitors and assessment
Company assessmentDirect peers
- GAF Energy: US-based building-integrated solar roofing company (subsidiary of Standard Industries) competing directly with Midsummer's WAVE/SLIM/BOLD product lines in the integrated solar roof segment for residential and commercial buildings.
- Avancis GmbH: German CIGS thin-film solar module manufacturer owned by CNBM (China National Building Materials). Directly competes with Midsummer in the CIGS module space, serving building-integrated and rooftop applications in Europe and Asia.
- Sunflare Inc. California-based manufacturer of flexible CIGS thin-film solar panels for building-integrated and rooftop applications. Sunflare is Midsummer's most direct competitor and former long-term partner, offering overlapping CIGS-on-stainless-steel technology targeted at commercial and residential rooftops.
- Singulus Technologies: German manufacturer of production equipment for solar cells (including CIGS and other thin-film), optical discs, and semiconductors. Directly comparable to Midsummer's DUO/UNO machinery business as a producer of solar manufacturing equipment.
- Von Ardenne GmbH: German manufacturer of vacuum deposition and coating equipment used in solar cell, glass, and electronics manufacturing. Competes with Midsummer in supplying production equipment for thin-film solar cell manufacturing lines.
- Solaria Corporation: US-based manufacturer of building-integrated and rooftop solar panels with a focus on aesthetics and high efficiency. Competes with Midsummer in the premium aesthetic rooftop solar segment, primarily serving US residential and commercial markets.
Broad incumbents
- First Solar: Largest US thin-film solar manufacturer (CdTe chemistry, utility-scale focus). Comparable as a thin-film incumbent but competes in different end-markets (utility vs. rooftop) and uses different chemistry than Midsummer's CIGS.
- Maxeon Solar Technologies: Spun off from SunPower in 2020, Maxeon manufactures premium high-efficiency crystalline silicon solar panels with proprietary back-contact technology. Competes with Midsummer in premium residential and commercial rooftop segments globally.
- Tesla Energy (Solar Roof): Tesla's Solar Roof tile product competes with Midsummer WAVE for aesthetic-integrated rooftop solar, though Tesla is a much broader incumbent in EVs, storage, and solar with greater scale and brand recognition.
Emerging players
- Flisom AG: Swiss-based manufacturer of flexible CIGS thin-film solar modules using roll-to-roll production (acquired by Tata Power India). Competes with Midsummer in lightweight flexible CIGS for building-integrated and portable solar applications.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Midsummer social profiles
Digital presenceMidsummer financial estimates
Financial estimateRevenue estimate
Valuation estimate
Midsummer leadership team
Management profileNumber of profiles
Profiles15 records
Midsummer subsidiaries and ownership
Company hierarchySubsidiaries3 records
Midsummer funding detail
Funding detailFunding overview
Funding rounds6 records
Investors5 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Midsummer M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Midsummer
What does Midsummer do?
Midsummer develops and manufactures cadmium-free CIGS thin-film solar cells on flexible stainless steel substrates, sold as three building-integrated solar roof product lines (WAVE for roof tiles, SLIM for standing-seam metal roofs, BOLD/BOLD-S for flat bitumen and membrane roofs). The Midsummer Machinery division separately sells DUO turnkey and UNO research production systems to solar cell manufacturers worldwide, plus module assembly lines.
Is Midsummer a public or private company?
Midsummer is a public company. It is classified as public and is currently operating.
When was Midsummer founded?
Midsummer was founded in 2004. It employs 11 to 50 people.
Where is Midsummer based?
Midsummer is headquartered in Stockholm, Sweden, in the Europe region.
How does Midsummer make money?
Four revenue lines are on record. Solar Roof Products are the primary driver. The others are solar Cell Manufacturing Equipment, module Assembly Lines and aftermarket and Accessories.
Who are Midsummer's main competitors?
Direct peers on record are GAF Energy, Avancis GmbH, Sunflare Inc., Singulus Technologies, Von Ardenne GmbH and Solaria Corporation. Broad incumbents are First Solar, Maxeon Solar Technologies and Tesla Energy (Solar Roof). Flisom AG is listed as an emerging player.
Does Midsummer have an API?
No public API is recorded for Midsummer.
What industry is Midsummer in?
Midsummer's product category is Building-integrated thin-film solar photovoltaics. Its primary akta.pro industry code is EUAMAHAA, Solar PV Module & Cell Manufacturing (Crystalline, Thin-Film), with a secondary code of IMADAFAO, Solar Roofing & Roof-Mounted PV Systems. Its NAICS code is 333519 and its SIC code is 3540.