BISOL Group

What BISOL Group does

BISOL Group, d.o.o. is a Slovenia-headquartered manufacturer of photovoltaic (PV) solar modules and mounting systems, founded in 2004 by Dr. Uroš Merc. The company operates a single 750 MW production facility in Prebold, Slovenia, using TOPCon tunnel oxide passivated contacts cell technology in a G12R half-cut configuration with 16 thin-wired busbars; it transitioned its full module lineup to G12R cells in 2025. Its product range centers on the BISOL Supreme™ series — the first solar module globally marketed with a 25-year 100% output power guarantee and a stated 0% effective degradation rate — and the BISOL Premium line of Duplex, Bifacial, Lumina (transparent for agrivoltaic), Spectrum (architectural color), BIPV (building-integrated, co-developed with Schweizer's Solrif system), and Laminate frameless modules, plus the EasyMount™ flat-roof and pitched-roof racking family.\n\nBISOL generates revenue primarily through hardware sales of PV modules and mounting structures, distributed via a combination of regional direct sales teams (Italy, Benelux & Germany, DACH, Francophone, Other Europe, and Slovenian industrial and small power plant segments) and an authorized distributor and installer network active in 30+ countries, with modules reported as installed in 120+ countries. End-customer segments span residential rooftop, commercial and industrial, utility-scale, and agricultural (agrivoltaic) markets. The company sells at quote-based pricing rather than published list pricing, supplements hardware sales with a €0.03/Wp cashback loyalty program on Supreme modules, and operates profitably without bank debt, financing growth internally.\n\nThe company is privately held and founder-controlled, with Dr. Merc as majority shareholder and Chairman and Marko Poličnik as CEO; the broader Merc-controlled portfolio comprises 35 companies with a stated combined turnover of approximately €100 million. Supporting the manufacturing platform is a comprehensive certification stack (IEC 61215/61730, ISO 9001/14001/45001, IEC 62716/62804/61701/TS 63342, CE, RoHS, REACH, PFAS-free) and a proprietary BISOL Tracking System that ties each module's serial number to materials, machine recipes, personnel, and customer data, enabling QR-code and NFC-based authenticity verification.

Name

BISOL Group

Legal name

BISOL Group, d.o.o.

Website

https://bisol.com

Company type

Private

Founded year

2004

Operating status

Operating

Headcount range

101–250 employees

Short description

BISOL Group is a Slovenia-based manufacturer of photovoltaic solar modules and mounting systems, serving residential, commercial, industrial, and utility-scale customers across 120+ countries. The company operates a 750 MW production facility and claims to be Europe's largest PV module manufacturer.

Ownership category

akta.pro rank

Product category

Solar Photovoltaic Modules

SIC

Semiconductors & Related Devices (3674)

akta.pro primary industry

Solar PV Module & Cell Manufacturing (Crystalline, Thin-Film) (EUAMAHAA)

akta.pro secondary industries

Solar Mounting, Racking, Trackers & Structural BOS Manufacturing (EUAMAHAC), Solar Roofing & Roof-Mounted PV Systems (IMADAFAO), Solar Plant Components Supply & Manufacturing (Modules, Cells, Wafers, Mirrors, Heliostats) (EUACAGAK), Next-Gen Photovoltaics R&D (Perovskite, Tandem, Organic, BIPV Materials) (EUAMAOAA)

Keywords

• Photovoltaic modules
• Solar mounting systems
• Building-integrated PV
• TOPCon solar cells
• European solar manufacturing

Headquarters

HQ city

Prebold

HQ country

Slovenia

HQ region

Europe

Offices7 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain

Revenue model

1. PV Modules Sales: Sale of photovoltaic solar modules including Supreme series, Premium series (Duplex, Laminate, BIPV, Spectrum, Bifacial, Lumina). Hardware sales constitute the primary revenue stream.
2. Mounting Solutions Sales: Sale of EasyMount™ mounting systems including Slim & Twin Slim BASE, Alpine TRIANGLE, Quick RAIL, Robust BOLT, Home HOOK, and accessories.
3. BISOL Supreme™ Cashback Program: Customer cashback/refund program for BISOL Supreme™ module purchases providing 0.03€/Wp refund upon registration and installation verification.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels11 records

Core offering

BISOL Group manufactures and sells photovoltaic (PV) solar modules under the BISOL Supreme™ and BISOL Premium (Duplex, Bifacial, Lumina, Spectrum, BIPV, Laminate) series, along with the EasyMount™ line of mounting structures for flat and inclined roofs. The company operates a 750 MW European production facility in Slovenia, supplying hardware to residential, commercial, industrial, utility-scale, and agricultural customers through a network of distributors and installers in 30+ countries.

Product overview

BISOL Group is Europe's largest PV module manufacturer offering a comprehensive solar energy portfolio. The product lineup consists of two main categories: PV modules and mounting solutions. PV modules include the premium BISOL Supreme™ series (featuring the world's first 25-year 100% power guarantee) and the BISOL Premium series comprising Duplex, Bifacial, Lumina (transparent/agricultural), Spectrum (colored architectural), BIPV (building-integrated), and Laminate modules. EasyMount™ mounting solutions cover flat roofs (Slim BASE, Twin Slim BASE, Alpine TRIANGLE) and inclined roofs (Quick RAIL, Robust BOLT, Home HOOK, BIPV). Additional services include the BISOL Supreme™ Cashback loyalty program and NFC-based module authenticity verification. The portfolio is unified by TOPCon G12R technology, 100% European manufacturing, and comprehensive traceability through unique serial numbers.

Differentiator

Problem solved

Functional benefit

Brands

• BISOL Supreme: First solar module in the world with 25 years of 100% Output Power Guarantee, featuring 0% effective degradation rate and 11% more energy yield
• BISOL Premium
• BISOL Duplex
• BISOL Lumina
• BISOL Spectrum
• BISOL Bifacial
• BISOL Laminate
• BISOL BIPV
• EasyMount

Products and services

• BISOL Supreme™ Premium solar module series offering the world's first 25-year 100% output power guarantee with 0% effective degradation rate and 11% higher energy yield compared to standard modules, including complete module traceability via QR code scanning. Built on TOPCon G12R half-cut cell technology.
• BISOL Duplex Best-selling PV module offering optimal power/size ratio with higher power and conversion efficiency, available in BDO (440-460 Wp), BBO (500-520 Wp), and BGO (560-580 Wp) variants including anti-reflective Deflect version. BGO Duplex and BGO Bifacial modules launched in March 2025.
• BISOL Bifacial Dual-sided power generation module with transparent backsheet enabling bifacial gains for ground-mount and flat roof installations, available in BDO, BBO, and BGO power classes. BHO Duplex and BHO Bifacial modules launched in March 2025 specifically for utility-scale projects.
• BISOL Lumina High transparency PV module with 25.3% transparent area for agrivoltaic projects, greenhouses, winter gardens, skylights and car canopies, featuring bifacial gain up to 60% from rear side.
• BISOL Spectrum Aesthetically designed colored PV modules available in Ruby Ray, Jade Shine, Amber Glow, and Silver Beam colors for architectural integration and culturally protected areas, with power range from 345 to 420 Wp.
• BISOL BIPV Building-integrated PV modules developed with Schweizer Solrif system for seamless roof replacement, featuring watertight design for 10-70 degree roof pitches, available in BSO (440-460 Wp) with luxurious color assortment.
• BISOL Laminate Frameless BISOL Duplex modules enabling different mounting methods for building integration, solar heat pumps, and marine applications, available in BDO (440-460 Wp) with dimensions 1,755 x 1,128 x 20 mm.
• EasyMount™ Slim & Twin Slim BASE Cost-effective flat roof mounting solution with high wind and snow resistance, fitting most PV modules with no cutting required; Twin version enables east-west orientation.
• EasyMount™ Alpine TRIANGLE Customizable mounting structure for extreme weather conditions on flat or pitched roofs, withstanding higher wind and snow loads with optional no roof penetration.
• EasyMount™ Quick RAIL Universal mounting solution for trapezoidal metal sheet roofs; short rails reduce installation time by 30% compared to industry standard with no cutting or drilling required.
• EasyMount™ Robust BOLT Functional mounting solution for trapezoidal and corrugated pitched roofs, suitable for steel or wooden roof structures with high load capacity.
• EasyMount™ Home HOOK Universal hook solution for tile-covered roofs with adjustable multiple points, made of high-grade non-corrosive materials with exceptional load-carrying capacity.
• BISOL Supreme™ Cashback Program

Quantifiable outcome

• 11% higher energy yield in guarantee period compared to best-in-class alternatives
• +4 more outcomes

Named customers3 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Schweizer (Solrif® system)coreTechnology or IntegrationDevelopment partnership with Swiss company Schweizer for BIPV (Building-Integrated PV) modules using the Solrif® system. This collaboration enables BISOL to offer elegant aesthetic solutions that replace traditional roof tiles as an energy-efficient integrated roofing alternative.

Scale indicators11 records

Recent moves12 records

Expansion highlights5 records

Direct peers

• Meyer Burger Technology: Swiss-headquartered PV module manufacturer with European production (Germany/Switzerland), recently pivoting to TOPCon and HJT technologies. Directly competes with BISOL in European premium residential and commercial segments under similar EU-local-content value proposition.
• REC Group: Norwegian-headquartered PV module manufacturer with European manufacturing footprint in Singapore/Norway. Competes in premium residential and commercial rooftop segments with HJT-based Alpha and N-Peak series, overlapping BISOL's Premium and Supreme product positioning.

Broad incumbents

• Hanwha Q Cells: Korean-headquartered global tier-1 module manufacturer with significant German operations and large-scale EU manufacturing. Overlaps with BISOL across residential, commercial, and utility segments but at vastly greater scale and broader geographic reach.
• SunPower (Maxeon):

Regional players

• Solitek: Lithuanian PV module and BIPV manufacturer focusing on building-integrated and architectural solar solutions. Closest geographic peer to BISOL in the Baltic/Nordic region, with similar emphasis on European-made premium modules and BIPV.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/c/BISOLSolarCompany
• Facebookfacebook.com/bisolsolarcompany
• LinkedInsi.linkedin.com/company/bisol-group
• Instagraminstagram.com/bisol_group
• Xx.com/bisol_solar

Compliance20 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles14 records

Subsidiaries3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about BISOL Group