Substance
The roof leads, not the sales graphic.
Mounting, waterproofing, shading and electrical work are clarified on the actual building — not on a model.
COMPLETE PV SYSTEMS · OPTIONAL STORAGE
Photovoltaics in Geneva – SIG, ZEV, and clean installation
The Canton of Geneva offers a very attractive PV environment with around 1,900 sunshine hours, high household electricity prices (30–32 Rp./kWh), and an active utility (SIG). In 2026 SIG pays a fixed 10.96 Rp./kWh for fed-in solar electricity (up to 100 kWc) and, from 1 Jan 2026, tops up the Pronovo one-time payment via the Prime solaire (25% for 2 to <30 kWc, 15% for 30 to 100 kWc) plus a battery storage contribution of CHF 130/kWh. Pronovo, ZEV models, and the full tax deduction apply on top.
Geneva is the only Romande canton with a dominant full-service utility: SIG bundles electricity, gas, water, district heating, and telecom. This greatly simplifies ZEV projects and neighbourhood solutions because all grid questions are answered by a single partner.
Built to Swiss standards (NIN/ESTI)Free & non-bindingData stays confidential
Costs, storage, single-family home
Solar in Genf: the figures people ask about most
Three questions decide almost every project before a roof is ever measured. Here they are with source and date, so it stays clear what each figure rests on.
Costs
What a system costs
Example: 5–10 kWp rooftop PV: CHF 13,500–27,000. Incl. 8.1% VAT, before incentives and tax deductions, without a battery. Calculated from the SFOE median of CHF 2,497/kWp: the range reflects different system sizes. A market comparison, not a quote.
Roof renovation, structural reinforcement and replacement of the meter cabinet are not included. Roof access, electrical work and planning can change the price. Your specific quote follows the property assessment.
Costs with calculation and sourcesSizing
Single-family home: the realistic size
A typical household using around 4,000 kWh per year needs roughly 25 m² of module area (Swissolar, February 2024). As a starting figure, global irradiation in Canton Genf is around 1100 kWh/m² per year. Whether that works on your roof in Genf depends on orientation, pitch and shading — not on the floor plan.
Two federal bonuses explicitly do not apply to a single-family home: the winter electricity bonus requires at least 100 kW, and the tilt bonus at least 75 degrees of pitch. Neither applies to an ordinary pitched roof. Counting on them makes the business case look better than it is.
Clarify notification and permission before installationStorage
Battery storage and self-consumption
Battery storage earns its money through self-consumption. Electricity you use yourself saves not only the energy price but also grid fees and levies — which is why it is worth more than exported electricity. That is what decides whether a battery pays off.
Since 1 January 2025, an association for self-consumption (ZEV) may also use the existing connection lines. This makes apartment buildings and neighbourhood setups considerably cheaper, as no dedicated line is required. Relevant grid operators in Canton Genf: SIG (Services Industriels de Genève).
When battery storage makes sense
Sources: SFOE price survey 2025 · 03 Aug 2026 · FTA: VAT rates · Swiss Federal Office of Energy, factsheet on PV promotion (PDF) · Pronovo, one-time payment for PV · Swissolar, photovoltaics factsheet (February 2024)
Services
What we offer.
PV system, heat pump, storage, wallbox and monitoring from one team. Every service is planned as part of a working energy system.
01 · Roof & facade
Plan and install PV systems cleanly.
We review roof, structure, shading, cable routing, inverter and grid connection. Then we create a technically reliable quote.
Roof review · Electrical coordination · Commissioning
01 / 05
Process
Understand first, then promise.
From first contact to commissioning, every system follows a clear process. We clarify roof, electrical work, incentives and expansion path completely. Only then do you receive a reliable quote. No site chaos, no wishful math.
- 01About 2 minutes
Initial estimate
Your key details are enough for a first, honest orientation — no appointment, no obligation.
- 02Response within 24–48 h
3D survey & technical review
We measure the roof by drone and clarify electrical work, regulations and the grid operator.
- 03A few days after the survey
Transparent quote
You see every line item individually, realistic ranges and sensible options such as storage or a wallbox.
- 04After permit and grid-operator approval
Planning, installation & commissioning
We coordinate execution, registration, acceptance and documentation until your system is reliably connected to the grid.
Swiss facts
Applies to residential and commercial properties.
- One-time remuneration
- Federal support depends on system type and size band. Vigorek clarifies which remuneration rate applies to your property and how it interacts with canton and grid operator.
- Storage as a system decision
- A battery only pays off when it fits your consumption and home technology. We assess it as part of the overall plan — not as a late upsell.
- Realistic payback
- We calculate with ranges instead of wishful numbers: self-consumption, remuneration and tariff logic together give a realistic picture of your economic return.
Economics
What does your solar system save?
We map self-consumption, feed-in tariff and payback for your property — so you see early what the system realistically returns.
Proof
How sound planning becomes visible.
Our quotes are not built from flat packages, but from checked data, technical pre-assessment and clearly itemized positions.
Planning basis
Official data as the first cross-check
Roof potential, irradiation and addresses are checked against GeoAdmin and BFE Sonnendach: the same datasets used by federal and cantonal bodies.
Property review
Final quote based on verified data
The initial estimate gives realistic orientation. For the final quote, we capture roof areas, access and technical conditions through a 3D survey (drone) and on-site review — precise, not based on satellite assumptions.
Electrical
Coordination by licensed professionals
From electrical planning through protection equipment to grid registration: all safety-critical steps are carried out by licensed electrical professionals, in-house or through vetted partners.
Quote
Itemized instead of a flat package
Every line item is shown individually instead of hidden in a flat package — so variants and ranges stay traceable from the start.
Execution standard
- Fall protection
- Waterproofing
- Electrical installation to standard
- Documentation
Regional clarification
Not every system follows the same logic in Genf.
In Switzerland, permits, grid operator, metering concept and incentive path always depend on the property, municipality and canton. These are exactly the points clarified early before a quote becomes binding.
That avoids a generic promise and creates a well-founded assessment that fits the region and the building.
Components by
The Founders
Engineering depth. Financial structure.
You know before signing who calculates your project and who builds it. Behind that are two founders with two areas of expertise — engineering and finance — and the conviction that 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.
CFATreasuryBusiness case
Marc Hammerschmidt
B.Eng. Mechanical Engineering
Co-Founder · Engineering & Planning
Marc handles the technical side: planning, structural analysis, system integration and execution that remains traceable a decade later. An engineering mindset means no improvisation, only well-reasoned solutions for every roof.
Mechanical Eng.System planningStructural analysis
Next step
Questions about your roof? We’ll go through them with you personally — the initial estimate is the easiest way in.
Building in focus
From roof surface to energy surface.
Full-black, in-roof or flat-roof: in Genf we plan not for a datasheet, but for a building that has to stand up architecturally and within its local context.
Transformation
Architecture first
Architecture, use and yield planned together.
In Genf, materiality, visual lines and technical details are aligned so the system fits the design language and performs cleanly over time.
Full-BlackIndachFlachdach
Precision
Installation becomes visible before it has to be explained.
The system grows precisely into the building: tight penetrations, protected facade, modules sliding into the rails, and an aesthetic that fits the architecture instead of disturbing it.
Calm
Technology that stays calm after handover.
The inverter, registration and documentation are done, cable routes and labels stay traceable, and the roof becomes a calm, reliable energy source for everyday use.
Substance01
The roof leads, not the sales graphic.
Mounting, waterproofing, shading and electrical work are clarified on the actual building — not on a model.
Precision02
Installation becomes visible before it has to be explained.
The system grows precisely into the building: tight penetrations, protected facade, modules sliding into the rails, and an aesthetic that fits the architecture instead of disturbing it.
Calm03
Technology that stays calm after handover.
The inverter, registration and documentation are done, cable routes and labels stay traceable, and the roof becomes a calm, reliable energy source for everyday use.
Clarity before commitment
Answers before you decide.
The key points are explained clearly, factually and without artificial urgency. For details, we assess your property in its project context.
Canton check
Solar system in Canton Genf: what matters regionally
Many projects start with a rough roof idea. We translate it into a verifiable concept with layout plan, cable routes, safety logic and documented handover.
Canton Genf has its own rules for subsidies, permits and grid connection. We check them before quoting and record them in the project documentation.
Roof potential
Canton Genf guideline: approx. 1100 kWh/m² global irradiation per year.
Grid & utility
Relevant grid operators in the canton: SIG (Services Industriels de Genève). Metering concept and registration are clarified before execution.
Permit
Roof-mounted systems on standard buildings in Geneva require notification but no permit – the construction notice (avis d'ouverture de chantier) must be filed at least 14 days before work starts. For listed objects, systems in the Zone de protection du vieux Genève, and facade installations on protected buildings, a building permit is required. The Office cantonal de l'énergie (OCEN) provides guidance; an OCEN subsidy request must reach the office at least 14 days before construction begins.
Subsidies & taxes
Geneva is shaped by Services Industriels de Genève (SIG). From 1 Jan 2026, the SIG Prime solaire tops up the Pronovo one-time payment: 25% for systems of 2 to <30 kWc and 15% for 30 to 100 kWc. There is also an SIG battery storage contribution of CHF 130/kWh (max. 15 kWh). The SIG feed-in tariff is a fixed 10.96 Rp./kWh in 2026 (systems up to 100 kWc). ZEV and contracting models apply on top. For private owners, Pronovo and the full tax deduction are the main pillars.
Your next step: an initial estimate in about 2 minutes.
Your key details produce a first orientation on price range, incentives and payback — a solid basis to talk through your project.
01
You know where you stand
A realistic span for your roof — not a rounded sales promise.
02
The technical side is built in
Electrical scope, metering and grid connection belong to the calculation from the start, not to a surprise afterwards.
03
You decide calmly
If it fits, a traceable quote follows. If it doesn’t, we’ll tell you that openly.
Start here
Quick to complete, concrete as a starting point for your building — and no obligation.
Free and non-binding.Response within 24–48 h.Your data stays with us.
Direct contact
If the project is already more concrete.
If you prefer to speak directly or already have documents and project context at hand, you can reach us through the usual channels.
Works well for
Roof plans, photos, existing quotes, questions around electrical coordination or already defined project timelines.
Phone
Location
Kirchweg 32, 8102 Oberengstringen, Zürich, CH
Coverage
Complete PV systems with planning, installation, electrical coordination and commissioning across all German-speaking cantons.
Core services
Services with a real focus on Genf
The key services, tailored directly to Genf and the local requirements in your region.
Regional service
PV Installation Genf – Roof & Electrical
In Canton Genf, clean project logic and clear ownership between roof and electrical work matter most. Geneva is the only Romande canton with a dominant full-service utility: SIG bundles electricity, gas, water, district heating, and telecom. This greatly simplifies ZEV projects and neighbourhood solutions because all grid questions are answered by a single partner.
Regional service
Solar Installation Genf – Planning to Commissioning
In Canton Genf, defensible quotes, clean project steering and commissioning without loose ends matter most. In the Canton of Geneva, the SIG Prime solaire tops up the Pronovo one-time payment from 1 Jan 2026: 25% for systems of 2 to <30 kWc and 15% for 30 to 100 kWc. There is also an SIG battery storage contribution of CHF 130/kWh (max. 15 kWh) plus the full tax deduction. Register the application before construction starts – rates are updated periodically.
Regional service
Flat-Roof Photovoltaics Genf – Loads, Roof Protection and Mounting
In Canton Genf, flat roofs on commercial buildings and multi-family homes represent the largest untapped solar area. Geneva consistently implements MuKEn principles. New buildings and major renovations must meet self-generation requirements; heating replacements clearly favour renewables. PV systems combined with heat pumps or district heating complements are the recommended standard.
Further reading
Helpful answers on solar in Genf
These guides answer the questions that come up most often before deciding on a solar installation.
SIG Primesolaire Geneva
In 2026, the SIG Prime solaire supplements the Pronovo one-time incentive: 25% of the PRU for 2 to under 30 kWc and 15% for 30 to 100 kWc. Self-consumption, commissioning and Pronovo certification are decisive.
Geneva solar obligation: 0.2 GWh
Geneva requires sites consuming more than 0.2 GWh per year to equip suitable roof areas with PV by 2030. The decisive points are the definition of suitable areas, priority for self-consumption and proof of any exemption to OCEN.
All locations by canton and municipality
The locations directory gives you an overview of all cantons and municipalities and takes you straight to the information for your region.