What WIRSOL Solar AG does

WIRSOL Solar AG, operating commercially as WIRSOL Aufdach GmbH and branded as WIRSOL Roof Solutions, is a privately held German photovoltaic solutions provider founded in 2003 and headquartered in Waghäusel, Baden-Württemberg. The company designs, supplies, and installs rooftop photovoltaic (PV) systems — covering panels, inverters, battery storage, EV charging infrastructure, and medium-voltage grid connections — for residential, commercial/industrial, and municipal customers across Germany. The core offering is a one-stop-shop model that takes projects from initial consultation and planning through mounting, grid connection, commissioning, and lifecycle maintenance. Reference installations include a ~2 MWp system for SEW Eurodrive, a 9 MW logistics-center installation for pfenning logistics, multi-building rooftop PV for MHK Group, and installations for Wiesentaler Mineralbrunnen, Hoffmann Logistik, Klima Arena Sinsheim, and Bio-Hofladen Kliesow, spanning manufacturing, logistics, beverage, nonprofit, and agriculture verticals.

The company's competitive positioning rests on vertical integration and in-house capabilities: an in-house Tief- und Leitungsbau (civil engineering and cable laying) team of 20 with its own equipment fleet handles large-scale groundwork and grid connections; the Solarteur Camp Rhein-Neckar is a proprietary training center that certifies WIRSOL's PV installer workforce; and the Netzbau division executes medium-voltage grid connection projects including transformer stations for solar parks. The business model is primarily project-based one-time revenue from installation contracts, supplemented by recurring professional services — maintenance, monitoring, 24/7 troubleshooting, insurance management, and PV cleaning (starting at €490 net, delivered via partner Meteor Nofer GmbH) — across an installed base of 16,000+ systems totaling 1,600 MW of capacity. Go-to-market combines an inbound digital consultation wizard, in-person Infoabend events capped at 20 participants, and direct field-based enterprise sales, all domestic within Germany. The company commits at least 20% of revenue to its own PV projects for CO2 removal, and reports annual avoided emissions of 1,008,000 tonnes.

Name

WIRSOL Solar AG

Legal name

WIRSOL Aufdach GmbH

Website

https://wirsol.com

Company type

Private

Founded year

2003

Operating status

Operating

Headcount range

11–50 employees

Short description

WIRSOL Aufdach GmbH (formerly WIRSOL Solar AG) is a German photovoltaic solutions provider founded in 2003, based in Waghäusel, Baden-Württemberg. It designs, installs, and maintains rooftop solar systems, battery storage, and EV charging for commercial, industrial, residential, and municipal customers across Germany.

Ownership category

akta.pro rank

Product category

Rooftop Solar PV Installation Services

NAICS

Roofing Contractors (23816), Roofing Contractors (238160)

SIC

Asphalt Paving & Roofing Materials (2950)

akta.pro primary industry

Solar Roofing & Roof-Mounted PV Systems (IMADAFAO)

akta.pro secondary industries

Renewable Distributed Generation (Rooftop/Onsite Solar, Small Wind, Small Hydro) (EUACALAJ), Roof Installation & Replacement (HSAPAKAA), PV Balance of System (BOS) & Electrical Infrastructure (Inverters, Transformers, Cabling, Substations) (EUACAGAC)

Keywords

• Rooftop photovoltaic systems
• Solar installation services
• Battery energy storage
• EV charging infrastructure
• Medium-voltage grid construction

Headquarters

HQ city

Waghäusel

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Infrastructure, Marketing or Sales, Technology or R&D

Revenue model

1. Photovoltaik-Anlagen (PV Installation): Design, supply, and installation of rooftop photovoltaic systems for residential, commercial, and industrial customers. Revenue is generated as project-based one-time fees, with scope ranging from small residential installations to large industrial rooftop systems (e.g., 9 MW logistics center installations).
2. Stromspeicher (Battery Storage): Sale and installation of battery storage systems as standalone or add-on products to PV installations, typically bundled within the overall project contract.
3. Elektromobilität (EV Charging): Sale and installation of EV charging infrastructure, offered as part of integrated energy solutions for both residential and commercial customers.
4. Wartung und Instandhaltung (Maintenance Services): Ongoing maintenance, troubleshooting, monitoring, insurance management, and component replacement services for installed PV systems. Provided over the full lifecycle of the installation.
5. Photovoltaik-Reinigung (PV Cleaning): Professional cleaning services for PV installations offered through a partner (Meteor Nofer GmbH), starting at €490 net per cleaning package.
6. Investoren-Forum (Investor Events): Paid or managed investor-facing events educating participants on profitable solar investments and tax advantages (Investitionsabzugsbetrag).

Pricing tiers

Go-to-market motion3 records

Distribution channels3 records

Marketing channels5 records

Core offering

WIRSOL plans, supplies, installs, and maintains rooftop photovoltaic (PV) systems for residential, commercial, and industrial customers across Germany. Its core offering, branded WIRSOL Roof Solutions, bundles solar panels, mounting, inverters, battery storage, and EV charging into single-source projects, supplemented by in-house medium-voltage grid construction, civil engineering/cable laying, lifecycle maintenance, and a proprietary installer training academy.

Product overview

WIRSOL Solar AG operates as a photovoltaic (solar energy) solutions provider offering a unified portfolio of rooftop solar systems and associated services. The core offering is WIRSOL Roof Solutions — a comprehensive photovoltaic installation service covering customized solar panel systems (PV-Anlagen) for residential, commercial, and industrial customers. This core is complemented by add-on modules including battery storage (Stromspeicher) and electric vehicle charging infrastructure (Elektromobilität), while large-scale projects are supported by an in-house Tief- und Leitungsbau (underground and cable construction) team. Post-installation lifecycle support is provided through a dedicated Kundenservice division offering maintenance, monitoring, and troubleshooting via a 24/7 hotline. Additionally, the company operates the Solarteur Camp Rhein-Neckar, a proprietary training center for PV installers, and offers a Photovoltaik Reinigung (PV cleaning) service through a partner. Together, these offerings form a one-stop-shop model delivering solar solutions from initial consultation through installation, ongoing service, and workforce development.

Differentiator

Problem solved

Functional benefit

Products and services

• WIRSOL Roof Solutions (Rooftop PV Installation Service) End-to-end rooftop photovoltaic installation service for private households, commercial businesses, and industrial customers, covering planning, mounting, inverters, battery storage, EV charging, grid connection, and ongoing maintenance from a single partner.
• Photovoltaikanlagen (PV Systems) Solar panel systems installed on rooftops to generate electricity from sunlight, available for private households (single-family, semi-detached, row, and multi-family homes) as well as commercial and industrial buildings.
• Stromspeicher (Battery Storage Systems) Energy storage systems that store excess solar electricity from PV installations for later use, increasing self-consumption, providing backup capability, and enabling greater energy independence for residential and commercial customers.
• Elektromobilität (EV Charging Solutions) Electric vehicle charging infrastructure integrated with PV systems, allowing residential and commercial customers to charge EVs using self-generated solar power.
• Tief- und Leitungsbau (Underground and Cable Construction) Civil engineering, earthworks, surface preparation, foundation and paving work, low- and medium-voltage cable laying, grid connection preparation, and demolition services for large-scale photovoltaic projects, delivered with the company's own equipment fleet.
• Kundenservice (Customer Service and Maintenance) Comprehensive post-installation support for PV systems including maintenance, troubleshooting, monitoring, warranty handling, component replacement, and insurance support, delivered over the full lifecycle of the installation with a 24/7 hotline.
• Photovoltaik Reinigung (PV Cleaning Service) Professional PV cleaning and inspection packages starting at €490 net, including scaffold-free cleaning, mobile elevated work platform access, washing robot, pure water cleaning, module inspection, and documentation, delivered by partner Meteor Nofer GmbH.

Quantifiable outcome

• Over 1,600 MW of installed capacity since 2003, generating annual CO₂ savings of 1,008,000 tonnes and supplying green electricity to more than half a million households
• +2 more outcomes

Named customers7 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Three partnerships are on record, tiered minor.

• Meteor Nofer GmbHminorChannel Partner/ Reseller/ DistributorThird-party partner responsible for executing PV cleaning services on behalf of WIRSOL. Customers booking cleaning through WIRSOL's website are referred to Meteor Nofer GmbH, which operates on its own account. WIRSOL acts as an intermediary/sales channel for the partner's cleaning services.
• FC Olympia 1919 e.V. KirrlachminorOthersLocal sports club used as venue for WIRSOL's Infoabend (information evening) event on March 27, 2026. The club provides the meeting space and WIRSOL conducts its expert consultation event at the venue, providing exposure for the club.
• WewiseminorOthersListed as a partner company on the WIRSOL website footer alongside DCC PLC and the Wirth Gruppe. Nature of partnership is not further described in available source material.

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Solarwatt: German PV solutions provider combining module manufacturing with installation of rooftop PV, storage, and energy management for residential and commercial customers — comparable end-to-end solar offering with a deeper component-side presence.
• IBC Solar: One of Germany's largest PV system providers offering rooftop and ground-mounted installations, system planning, and storage solutions for residential, commercial, and industrial customers — directly comparable in business model, customer base, and end-to-end service scope.
• Enerix: German franchise network of regional PV installers offering rooftop solar, storage, and EV charging to households and businesses with local advisory sales — directly comparable franchise-driven distributed installation model.

Emerging players

• Zolar: Online-first German PV installer that digitizes the residential solar journey from quote to commissioning, competing directly with WIRSOL's residential segment through a digital consultation funnel similar to WIRSOL's website wizard.
• 1Komma5°: Fast-scaling German one-stop-shop for residential and commercial solar, heat pumps, and EV charging; overlaps directly with WIRSOL's integrated energy offering and has grown rapidly into a scaled competitor.

Broad incumbents

• EnBW Solar+ (EnBW AG): Large German energy utility with a growing rooftop PV and storage business targeting residential and C&I customers across Germany, including its home region of Baden-Württemberg where WIRSOL also primarily operates.
• E.ON Solar / E.ON Energie Deutschland: Major German utility now offering rooftop PV, storage, and EV charging packages to households and businesses, leveraging its existing customer base, brand, and balance sheet — a broad incumbent competing in WIRSOL's primary segments.

Others

• Schletter Group: Manufacturer of solar mounting systems including rooftop and tracker solutions; comparable to WIRSOL's PV Mounting & Tracking Systems activity and a potential upstream supplier/partner rather than direct competitor.
• SMA Solar Technology: Germany's leading solar inverter manufacturer supplying string and central inverters to installers including WIRSOL; comparable in solar PV infrastructure but on the equipment side rather than installation services.

Regional players

• DAVE Energy Solutions: Germany-based regional PV installer focused on commercial and industrial rooftops with own grid connection expertise — closely comparable vertical integration profile and C&I target market, though smaller and less broadly known.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UC4wYsYwIt6RITUGe-TBg9pQ
• Facebookfacebook.com/Wirsol.Roof.Solutions
• LinkedInlinkedin.com/company/wirsol-solar-ag
• Instagraminstagram.com/wirsolroofsolutions

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 WIRSOL Solar AG