Energy savings calculator: how much do you save with solar power?
Set the amount of your monthly electricity bill and see how much a single-family home in Switzerland can save per year on average with a solar system.
How high is your electricity bill?
per month
What single-family homes save on average
CHF 1’750 per year
After 10 years, the system has paid for itself on average. Calculated over 25 years.
With this electricity bill, the system does not pay for itself within 25 years on average.
One-off payment from the federal government: CHF 3’402 for a system with 9.5 kWp.
Compare quotesFree and non-binding. The specialist installers work out for you how much you actually save on your roof.
Average of 26 model calculations · calculation model ch-energy-model-2026.09.6 · as of 05.10.2026
Electricity bill [betrag] per month: average saving [ersparnis] per year.
[betrag] per month
Electricity costs todayCHF 3’840
With a solar systemCHF 2’090
Per year, on average: electricity drawn from the grid minus payment for electricity fed in, including operating costs.
With this electricity bill, the system brings in on average CHF 0 more per year than the electricity costs today.
25 years at a glance
The saving pays off the systemThe system is paid off
How we calculate
- Average: 26 model calculations, one for the capital of each canton.
- Building and system: single-family home with a 9.5 kWp solar system on a south-facing roof (48 m², 32° pitch).
- Consumption: derived from your electricity bill, using the electricity price of the local grid operator (ElCom, standard product 2026).
- Saving: electricity you no longer draw from the grid, plus payment for electricity fed in, minus operating costs.
- Paid off after: calculated over 25 years, subsidies deducted. In 8 of the 26 locations, local contributions are added to the federal one-off payment.
Your saving depends on the roof, consumption and tariff. An individual quote from a specialist installer allows a more precise calculation. Subsidies from the federal government, canton and municipality are taken into account in the quote.
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