“How much does photovoltaics cost per square metre?” is one of the most common questions regarding cost orientation – and at the same time one of the most difficult, because the roof area alone says little about the price. This page nevertheless provides you with concrete guidance using current Swiss market prices, three example systems, and explains why the metric francs per kilowatt-peak (kWp) is more meaningful than the pure m² price.
Key points at a glance
The key points of this section can be summarised compactly:
- As a guideline, the costs for turnkey on-roof systems in Switzerland are between approximately CHF 2’000 and 3’200 per kWp (net plus VAT, before subsidy). Small systems tend towards the upper limit, larger systems towards the lower.
- Converted to roof area, this corresponds to approximately CHF 350–550 per m² of module area – as a rough guideline.
- Pro kWp Leistung braucht es rund 5–6 m² Dachfläche.
- The price per m² is a rough indicator. The price per kWp is more meaningful for comparing offers.
- Storage, scaffolding, inverters, and electrical work strongly influence the total price – two roofs of the same size can cost different amounts.
This makes it clear: the roof area only provides an initial orientation. For the actual planning, what matters above all is which output can sensibly be installed and which works are included in the quote.
- As of 11.07.2026
Why photovoltaic costs per m² are only limitedly informative
The price per m² suggests a simple formula: roof area multiplied by price equals total costs. In practice, this hardly works because several factors are involved:
- Usable area is not module area. Chimneys, roof windows, ventilation units and edge distances reduce the usable area.
- Shading from trees, neighbouring buildings or structures makes parts of the roof unattractive or unusable.
- Roof shape affects the installation effort: flat roofs require a mounting system, pitched roofs a different substructure, and tile and metal roofs differ in their fastening methods.
- Small systems have higher fixed costs per unit – planning, travel time and scaffolding are spread over less area.
- Angular or complex roofs lead to waste in module layout and increase the workload.
In short: The price per m² tries to bring very different things onto a common denominator. Therefore, it is only the starting point, not the result.
Calculate photovoltaics per m² or per kWp?
Among specialist installers, the metric cost per kilowatt-peak (kWp) is common. It refers to the installed capacity and is therefore less dependent on the roof shape. For communication with laypeople, the price per m² is easier to understand – but it is less suitable for comparing quotes:
| Key figure | Advantage | Disadvantage |
|---|---|---|
| Cost per m² | Easy to understand | Technically inaccurate, many interfering factors |
| Cost per kWp | More comparable between quotes | More abstract for laypeople |
| Total quote | Most realistic basis | Only possible after project review |
For an initial cost estimate, the price per square meter is helpful; however, the kWp figure should always be included for quote comparison.
Three example systems with price range (guidelines for Switzerland)
The following examples show typical system sizes and associated market prices. The basis is the Photovoltaic Market Price Monitoring Study by EnergieSchweiz (BFE), which evaluates around 3,000 Swiss quotes annually, as well as supplementary Swiss market observations. Prices net (plus VAT), turnkey on-roof system, without battery storage, before subsidy:
| Example system | Output | Approx. module area | Total price range | Approx. CHF/kWp | Approx. CHF/m² | Typical situation |
|---|---|---|---|---|---|---|
| Small single-family home | 5 kWp | ~25–30 m² | CHF 13’000 – 18’000 | 2'600 – 3'600 | 460 – 600 | Small roof area, low consumption, without heat pump/electric car |
| Typical single-family home | 10 kWp | ~50–60 m² | CHF 22’000 – 32’000 | 2'200 – 3'200 | 380 – 550 | 4-person household, heat pump or electric car possible |
| Large single-family home / small apartment building | 20 kWp | ~100–120 m² | CHF 36’000 – 52’000 | 1'800 – 2'600 | 320 – 450 | Grosses Dach, MFH, ZEV-Modell oder starker Eigenverbrauch |
Important: These figures are guidelines based on real Swiss quotes, not price offers. The actual costs depend on roof type, accessibility, components, electrical work and scaffolding. Experience shows that the biggest cost driver is the installation effort: It is not the module prices, but the labour costs of specialist installers that make the biggest difference in Switzerland. For a specific roof, real quotes for the same system size can differ by several thousand francs – comparison is worthwhile.
What is included in the sample prices?
The ranges typically include a turnkey roof-mounted system with:
- Solar modules
- Inverter
- Mounting structure and installation
- Cabling
- Scaffolding and site safety
- Planning
- Electrical work and registration with the grid operator
The following are generally not included:
- Battery storage (an additional approx. CHF 600–900 per kWh of capacity, incl. installation; a 10-kWh battery without backup power function costs approx. CHF 6’000–10’000)
- Wallbox (home charging station with 11 kW: approx. CHF 2’000–3’000 incl. installation)
- Energy management system
- Extensive preliminary work on the roof or adjustments to the electrical distribution
These additional items often explain why two quotes with similar roof areas differ significantly in price.
What drives costs in a certain direction?
To top::
- Integrated roof system instead of on-roof (approx. 15–20% more).
- Flat roof with racking (additional costs for the structure).
- Verwinkeltes Dach, viele Dachfenster, schwieriger Zugang.
- High-quality modules and inverters with long warranties.
- Backup power function of the battery storage.
Downwards::
- Larger system (fixed costs are spread over more kWp).
- Simple gable roof, south-facing, no scaffolding work required on the neighbouring building.
- Standard components with solid, but not oversized, warranties.
- Simultaneous roof renovation, where the combination creates synergies.
For a reliable assessment, these points should always be considered together with location, consumption and specific quote.
What costs are behind the price per square metre?
Those who calculate “per m²” always add up the same items in the background. These are also included in every serious quote:
- Solar modules
- Inverter
- Mounting structure
- Installation
- Cabling
- Scaffolding
- Planning
- Registration and grid connection
- Electrical work
- optional battery storage, wallbox, energy management system
You can read how the total costs for a single-family home are structured on the page What does a solar system cost for a single-family home.
Why larger systems per m² often appear cheaper
Part of the costs is incurred regardless of the system size. Whether ten or twenty modules are installed – planning, travel, administration, and part of the electrical work are similarly demanding. These fixed costs are distributed over more kWp and more m² for larger systems. Therefore, the calculated price per unit decreases with size. This does not mean that bigger is always better – the economically sensible system is the one that fits the consumption and the roof.
When is the price per m² particularly misleading?
The following list summarises the key points on When is the price per m² particularly misleading?:
- Small roofs – high fixed cost proportions.
- Complex roofs – offcuts and additional effort.
- Roofs requiring renovation – preparatory work needed.
- Integrated systems – different mounting logic and price structure.
- Systems with storage – an additional cost block outside the “area”.
- Heavy shading – usable area smaller than geometric area.
- Difficult access – more effort for scaffolding, safety measures and transport.
Especially in these cases, the flat rate per square metre should not be the deciding factor, but rather the specific scope of services in the quote.
solar-guide.ch recommends: Use the price per m² as a rough guide, but always compare quotes based on the installed capacity in kWp and the included items. Market data from Swiss studies shows that offers for the same system size can differ by several thousand francs – without any significant difference in quality or performance. A lower price per m² says little if scaffolding, electrical work, or a battery storage are not included to the same extent. The comparison only becomes meaningful when two offers cover the same scope of services.
What should be included in a quote instead of just a 'price per m²'?
A useful quote should therefore not only state the area and total price, but also disclose the key technical and commercial items:
- Installed capacity in kWp
- Number and type of modules
- Inverter (type, output)
- Mounting system and substructure
- Scaffolding
- Electrical work and registration with the grid operator
- Battery storage (yes/no, capacity, backup power function?)
- Monitoring
- Warranties (product and performance warranties)
- Subsidy assumptions (one-off payment, cantonal programmes)
Find out what matters when comparing multiple quotes on the Photovoltaic System Quote page. The Calculate Solar System page shows how to make an initial estimate yourself.
Conclusion
The price per m² is intuitive but imprecise. As a guideline for Switzerland, an order of magnitude of around CHF 350–550 per m² of module area or CHF 2’000–3’200 per kWp currently applies – depending on system size and situation, net and before subsidy. However, for a real comparison, the installed capacity, the included items and the components count – documented in a clean quote.
The cost per m² provides only a first orientation. For a realistic assessment, you should compare individual quotes. Through solar-guide.ch, you can submit your request free of charge and without obligation. Your request will be forwarded to a maximum of three suitable specialist installers from your region.
Request quotes free of charge and without obligation
Frequently asked questions and answers
What does photovoltaics cost per m² in Switzerland?
As a rough guide, costs are around CHF 350–550 per m² of module area (net plus VAT, before subsidy). This corresponds to CHF 2’000–3’200 per kWp. Small systems are at the upper end, larger systems at the lower end. The exact price depends on roof type, system size, components and additional solutions such as battery storage.
Is the price per m² or per kWp more important?
For comparisons between quotes, the price per kWp is more meaningful because it refers to the installed capacity. The m² price is only a first indication.
How many square metres do I need for a solar system?
Pro kWp, around 5–6 m² of roof area is required. A typical single-family home with 10 kWp therefore needs approximately 50–60 m². A rough estimate is provided on the calculate solar system page; the exact layout is determined on site.
Why do quotes vary so much?
Because roof, mounting, scaffolding, electrical work, components and storage size are project-specific – and because providers calculate different services and warranties. Details on the page Photovoltaic system offer.
Is a battery storage system included in the price per m²?
No. A battery storage unit is a separate cost block that is calculated independently of the roof area. As a rough guide, CHF 600–900 per kWh of storage capacity including installation applies; a 10-kWh battery storage unit without backup power function costs approximately CHF 6’000–10’000. Details on costs and size can be found on the page Photovoltaic system with battery storage.
Average: 5 out of 5 stars (2 ratings)
