Switching to solar energy is a forward-looking decision that brings both ecological and financial benefits. However, before homeowners or companies take the first step, a central question often arises: What does a photovoltaic system cost? The answer depends on many factors, such as the size of the system, the chosen components, and the installation costs. In Switzerland, state subsidies also play an important role.
This article provides you with a comprehensive overview of the costs of a photovoltaic system and the various factors that should be considered in the calculation.
Cost factors of a photovoltaic system
The total cost of a photovoltaic system consists of several components that can vary significantly depending on requirements and circumstances.
System size (kWp)
The output of a photovoltaic system is stated in kilowatt-peak (kWp). The higher the kWp output, the more electricity the system can generate. For an average single-family home, the requirement is approximately 4 to 6 kWp. Larger systems, such as those required for apartment buildings or companies, can be 10 kWp and more. Generally: the larger the system, the higher the total costs, but also the potential benefit.
Type of solar modules
There are various types of solar modules that differ in price and efficiency. The most common variants are monocrystalline, polycrystalline, and thin-film modules.
- Monocrystalline modules: They offer the highest efficiency and are therefore usually more expensive, but are particularly suitable for limited roof areas.
- Polycrystalline modules: These modules are cheaper but have a slightly lower efficiency.
- Thin-film modules: They are attractive in terms of price but have the lowest efficiency and are therefore mainly suitable for larger roof areas.
Installation costs
Installation costs depend heavily on the condition of the roof. For a flat roof, installation is generally easier and cheaper than for a steep gable roof. Special structural requirements, such as the need for additional supports or roof repairs, can also increase costs. On average, installation costs for a photovoltaic system in Switzerland are between 3’000 and 6’000 CHF, depending on the system size and local conditions.
Inverter
The inverter is a central component of every photovoltaic system, as it converts the generated direct current into usable alternating current. The cost of an inverter varies depending on system size and technology. For a single-family home with a 5-kWp system, costs typically range between 1’500 and 3’000 CHF.
Battery storage
An optional but increasingly popular addition is the battery storage system. It allows you to store the electricity generated during the day and use it in the evening or at night. Battery storage systems cost between 6’000 and 12’000 CHF depending on capacity. The benefit of a storage system depends heavily on individual electricity consumption and electricity price trends.
Price examples for various system sizes
- Small system (3 kWp): For a small single-family home requiring about 3’000 kWh per year, the total costs for a 3-kWp system are approximately 10’000 to 15’000 CHF.
- Medium-sized system (5-7 kWp): A typical system for a single-family home with medium energy needs costs between 15’000 and 25’000 CHF.
- Large system (7 kWp and more): For larger buildings or companies with high electricity demands, systems from 10 kWp can incur costs of 30’000 CHF or more.
Ongoing operating costs
Photovoltaic systems are relatively low-maintenance in operation, but some ongoing costs do arise. These include:
- Maintenance and cleaning: For the regular inspection of the system and the cleaning of the modules, you should budget approximately 100 to 200 CHF per year.
- Replacement of the inverter: After 10 to 15 years, the inverter must be replaced. The costs for the replacement amount to approximately 1’500 to 3’000 CHF.
Subsidies and feed-in remuneration in Switzerland
In Switzerland, there are attractive subsidies that can significantly reduce the costs of photovoltaic systems. The most important subsidy is the one-off payment for photovoltaic systems (EIV), which covers a portion of the investment costs. Depending on the system size, the EIV can amount to up to 30% of the costs. In addition, many cantons and municipalities offer their own subsidy programmes, making the investment in solar power even more attractive.
In addition, the acquisition costs can be claimed for tax purposes, which further reduces the financial burden. The feed-in remuneration is another instrument used in Switzerland to promote solar energy. Homeowners receive a payment for the surplus electricity fed into the grid, which can further shorten the payback period.
Amortisation and economic viability
The payback period of a photovoltaic system depends heavily on individual circumstances – such as self-consumption, subsidies and electricity prices. In Switzerland, well-planned systems usually pay for themselves within 10 to 15 years. The higher the self-consumption, the faster the system pays off. Thanks to cantonal subsidies and feed-in remuneration, the payback period can be further shortened.
Additional costs for extensions
In addition to standard costs, there are also some possible additional costs for extensions:
- Battery storage: As already mentioned, a battery storage unit can significantly increase costs but offers long-term advantages through greater independence.
- Charging station for electric cars: If you own an electric car, you can charge your vehicle cost-effectively and sustainably with a photovoltaic system and a charging station. The costs for a charging station are approximately 1’000 to 2’000 CHF.
- Building applications and roof work: In some cases, additional building permits may be required for the installation of a photovoltaic system, which are associated with further costs.
Conclusion
The cost of a photovoltaic system in Switzerland depends on numerous factors, including the size of the system, the type of solar modules and the installation requirements. For an average single-family home, costs range between 15’000 and 25’000 CHF, whereby state subsidies and tax advantages can significantly reduce the financial burden. The installation of a battery storage or a charging station for electric vehicles increases the total costs but also brings additional independence and long-term savings. Comparing providers and receiving individual advice are essential to find the best solution for your needs.
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