Core service
PV installation: every roof is different. So is our installation.
Behind Switzerland’s solar record lie enormous quality differences: faulty module fixing, inadequate earthing and poor cable management are among the most common defects according to industry experts. PV installation is the interaction of roof membrane, mounting structure, cable routing, safety and a handover that remains traceable ten years later. Vigorek prepares a mounting concept before the first material is ordered.
In short
Mounting structure per SIA 261, documented penetrations, SUVA-compliant fall protection and complete handover including string diagram, measurement protocol and photo documentation.
No standard price – every roof is different. The estimate takes about 2 minutes and is non-binding.
Project profile
Typical use case
Single-family homes with high aesthetic standards (full-black, in-roof), clean cable routing and long-term value preservation.
Coverage
Planning and installation of photovoltaics in the Zurich region, Limmat Valley and eastern Aargau. Electrical work by a partner with an installation licence.
Contact
- 8GW
- installed PV capacity in Switzerland (2024)
- +1,8GW
- record additions in a single year
- 2M
- households that could theoretically power
Process
Onto the roof in four steps.
A clear, documented process – from first planning to complete handover.
- 01
Mounting concept
Structure, wind zone and cable routes are planned before any material is ordered.
- 02
Substructure
Object-specific mounting by roof type – tile, sheet metal, facade or flat roof.
- 03
Cabling & safety
Documented penetrations, protected roof membrane, SUVA-compliant fall protection.
- 04
Handover & documentation
String plan and photos from Vigorek, test report and safety certificate from the electrical contractor: traceable even in ten years.
Service in detail
What you can expect from us.
From planning to handover: the scope, the standards behind it and the projects this service is made for.
Scope of work
What we concretely handle.
From substructure to handover, every step is defined before the first material reaches the roof.
What’s included
- Mounting structure matched to tile, sheet metal, facade or flat-roof systems – not generic, but dimensioned object-specifically to wind zone (SIA 261), snow loads and building height.
- Clean cable routing with documented penetrations and roof membrane protection. Every transition between roof and electrical installation is photographed and recorded.
- Coordination of scaffolding, fall protection (SUVA-compliant), installation logistics and object-specific safety requirements – including a mounting concept prior to material ordering.
- Photo documentation and traceable handover: single-line diagram, string plan, data sheets and photos. The electrical contractor issues the test report and the safety certificate, so acceptance, grid operator and future service have everything in one place.
Why this is chosen
How you recognise clean work.
It is not the result alone that counts, but ownership, compliance and a traceable process.
Dependable standards
- Mounting concept before material ordering – not improvisation on the roof.
- Clear responsibilities: roofer, electrician, project management. No single-person-does-everything approach.
- Safety certificate under the Swiss Low-Voltage Installation Ordinance (NIV), issued by a qualified person of the electrical contractor.
- DC connectors always from the same manufacturer, applied consistently, also for extensions and not only on new installations.
Typical application
Where this service makes the difference.
Not every roof needs the same depth – these projects benefit the most.
Especially fits
- Single-family homes with high aesthetic standards (full-black, in-roof), clean cable routing and long-term value preservation.
- PV projects where mounting area, substructure, cable routes, inverter and grid connection must be coordinated cleanly.
- Commercial roofs with complex access, multiple roof penetrations and elevated documentation requirements (e.g. for insurers or authorities).
Frequently asked
What to know before choosing an installer.
What does a PV installation company do?
It plans and installs the mounting structure and modules, protects the roof membrane at every penetration and coordinates scaffolding and fall protection. Electrical work, the safety verification and grid registration are the responsibility of a licensed electrical professional. At Vigorek, installation, electrical coordination and handover are one project with one point of contact.
How do I recognise a good installation company?
Ask about five points before you sign: a mounting concept for your roof covering wind zone and snow load per SIA 261, fall protection per SUVA, who is responsible for the electrical work, a quote with separate items for material, installation, scaffolding and electrical work, and which documents you receive at handover: string plan, test report, safety verification and photos.
Comparing quotes: cost guideWhat does installing a solar system cost?
Installation is part of the system price. For a 5 to 10 kWp rooftop system, the reference curve of the SFOE price survey 2025 gives CHF 14,500–23,300 including VAT, before incentives and without a battery. Scaffolding, roof access and electrical work change the price; your specific quote follows the assessment of your roof.
Calculation in the cost guideDoes the installation need a building permit?
Usually not: in building and agricultural zones, sufficiently adapted solar systems on roofs or facades only need to be notified (Art. 18a para. 1 RPG). Cultural and natural monuments of cantonal or national significance require a building permit, and cantons can require one in protection zones. We clarify this for your location before installation.
Notification and permit guideWhere does Vigorek install solar systems?
Vigorek is based in Oberengstringen ZH and plans and installs systems in the Zurich region, the Limmat Valley and eastern Aargau. Incentives, grid operators and notification procedures differ by canton; the regional pages below show what applies at your location.
The Founders
Engineering depth. Financial structure.
You know before signing who calculates your project and who builds it: two founders, one for engineering, one for finance. A solar system only works long-term when both fit together from the start.
Christian Freiberger
CFA · former KPMG Senior Manager
Co-Founder · Strategy & Finance
Independent management consultant since 2015, previously Senior Manager at KPMG. Most recently Interim Treasury Manager at an energy storage manufacturer. Christian brings the financial structure: liquidity planning, transparent calculations and no project whose numbers don’t add up.
Marc Hammerschmidt
B.Eng. Mechanical Engineering
Co-Founder · Engineering & Planning
Marc handles the technical side: planning, structural analysis and system integration. He has helped install systems on roofs himself and plans so that nothing has to be improvised on the roof.
Regional Expertise
Based in Oberengstringen, rules for your region.
Every region has its own regulations, subsidies, and grid operators. We know the local conditions and support your project perfectly tailored to your location.
Priority region
Aargau
Aargau is known as the "energy canton" – with PSI (Paul Scherrer Institute) in Villigen researching solar technologies and PARK INNOVAARE as an innovation cluster. From 2026 AEW Energie AG pays a fixed tariff of around 8.2 Rp./kWh including HKN or the BFE reference market price without HKN (statutory minimum 6 Rp./kWh up to 30 kW). The high density of industrial and commercial buildings offers enormous potential for large rooftop systems. At cantonal level, Aargau funds facade PV (integrated facade CHF 400/kWp, mounted facade CHF 200/kWp, from 75 degrees tilt); there is no cantonal battery storage subsidy.
Priority region
Basel-Landschaft
Plan roofing work and PV together if the roof covering or insulation already needs renewal. Your quote should show which tasks can be combined and who is responsible for their interfaces.
Priority region
Basel-Stadt
Basel-Stadt pursues the ambitious net-zero 2037 climate target. The solar offensive mandates PV systems on new buildings and gradually extends the obligation to existing buildings (15-year transition). From 2026 IWB pays feed-in on a market basis tied to the quarterly BFE reference market price (statutory minimum 6 Rp./kWh up to 30 kW), with guarantees of origin handled separately – not Switzerland's highest tariffs. On the dense urban roofscape, every square metre of mounting area and execution precision count.
Priority region
Canton of Bern
Bern ranks among the cantons with the highest installed PV capacity per capita. BKW and EWB offer feed-in compensation up to 10.96 Rp./kWh (EWB). In the Bernese Oberland, altitude, horizon and snow conditions determine the winter yield. This places special demands on mounting structures and load distribution on alpine roofs.