Understanding photovoltaic systems: costs, benefits, subsidies
Nowadays, having your own photovoltaic system is much more than just a contribution to climate protection. For many homeowners in Switzerland, it is a strategic investment: it lowers ongoing electricity costs, reduces dependence on energy suppliers, and increases the market value of the property in the long term. Thanks to modern technology, today's solar systems operate reliably for decades—with manageable maintenance costs.
Nevertheless, there are still many unanswered questions before implementation: What investment costs are realistic? How large should the system be? Does battery storage make sense? And what subsidies are currently available?
This guide provides you with a clear and practical overview of prices, system variants, influencing factors, and funding opportunities—so you can make an informed decision and realize the full potential of your solar system in the long term.
How much does a photovoltaic system cost in Switzerland?
The cost of purchasing a photovoltaic system depends on several factors. The most important factors are the size of the system, the system design (with or without storage), and the structural conditions of your roof. For single-family homes, modern PV systems today fall within a clearly calculable price range.
As a general rule, larger systems are cheaper per unit of output. Small systems incur relatively higher fixed costs, while larger installations benefit from economies of scale.
Cost per installed capacity (kWp)
The output of a photovoltaic system is specified in kilowatt peak (kWp). This value describes the maximum output under optimal conditions. The following guidelines apply to typical residential buildings in Switzerland (including delivery, installation, and commissioning):
- 5 kWp (approx. 25–30 m² roof area): around 10,000–13,000 CHF
- 7 kWp (approx. 35–40 m² roof area): around 12,000–17,000 CHF
- 10 kWp (approx. 50–60 m² roof area): around CHF 15,000–23,000
These amounts usually already include:
- Solar modules and mounting system
- inverter
- Wiring on the DC and AC sides
- Installation including fall protection or scaffolding
- Grid connection and commissioning
- Administrative notifications to network operators and funding agencies
In practice, therefore, these are usually turnkey complete solutions.
Different systems and their costs
Not all photovoltaic systems are constructed in the same way. The technology and investment costs vary significantly depending on the intended use, roof shape, and electricity consumption.
Photovoltaic system without battery storage
This variant is the classic entry-level solution. The solar power produced is consumed directly in the household, with any surplus fed into the public grid. Technically, this system is simple, cost-efficient, and very attractive for many households from an economic perspective.
Price range:
approx. $1,600–$2,200 per kWp
Examples:
- 5 kWp: approx. $10,000–13,000
- 10 kWp: approx. $15,000–$23,000
Suitable for households with normal electricity consumption without a heat pump or electric car.
Roof-mounted or in-roof installation?
Roof-mounted systems are installed on top of the existing roof covering. They are cost-effective, technically proven, and flexible in their application.
Integrated roof systems completely replace the roof tiles. They look more integrated, but are significantly more complex in terms of planning and installation.
Cost difference:
Integrated roof systems are generally 20–35% more expensive than rooftop systems.
Flat roof or pitched roof
On flat roofs, modules must be mounted on supports and weighted down to achieve the optimum angle. This results in additional material and installation costs. Steep roofs are usually easier to cover.
Additional costs for flat roofs:
Approximately 10–25% compared to pitched roofs.
Running costs and service life
Photovoltaic systems are considered to be very low-maintenance, but you should still factor in low annual costs.
Insurance and additional coverage:
$50–200 per year
Maintenance and visual inspections:
$200–$300 per year (recommended every 1–2 years)
Inverter:
Service life approx. 10–15 years
Replacement cost: $1,000–$3,000
Monitoring and service packages:
$50–$300 per year
Typical total costs:
• Without reserves: approx. $200–400/year
• With reserves: approx. $250–500/year
What factors influence the total cost?
Several structural and technical factors have a direct impact on price and effort:
- Condition and age of the roof
- Roof orientation and pitch
- Shading from trees, chimneys, or neighboring buildings
- Quality and type of solar modules
- Length of cable runs to the equipment room
- Accessibility and safety requirements
- Regional price differences (urban vs. rural)
Careful preliminary clarification helps to avoid unexpected additional costs.
Services related to planning, installation, and operation
Consulting and siteanalysis
First, we check whether your building is suitable for photovoltaics. We analyze the roof orientation, shading, statics, and the expected annual yield. This assessment forms the basis for sensible dimensioning.
Detailed planning and technicaldesign
During the planning phase, modules, inverters, cable routing, and connection points are precisely determined. For older buildings, a structural analysis of the roof is also performed.
Assembly, grid connection, andcommissioning
The specialist team assembles the substructure, installs the modules, lays the cables, and connects the system. The system is then tested and officially commissioned.
Battery storage and energymanagement
If provided, the storage system is optimally integrated into the overall system. Intelligent controls ensure that as much solar power as possible is used by the system itself.
Roof renovation orreinforcement
For roofs in need of renovation, repair work may be advisable or necessary prior to installation in order to ensure long-term safety.
Smarthome connectivity
Modern PV systems can be integrated into smart home systems, for example to control heat pumps, charging stations, or household appliances.
Conclusion: Photovoltaics as a long-term investment
Today, a photovoltaic system is one of the most sustainable and economically sensible investments for homeowners in Switzerland. The technology is reliable, the costs can be calculated transparently, and the government subsidies are attractive.
Whether it's a simple system or a complete system with storage: if you carefully consider your roof, electricity consumption, and budget, you'll benefit from lower energy costs and greater independence for decades to come. Professional planning is crucial—it determines the yield, service life, and cost-effectiveness of the entire system.
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