Switzerland Solar Forecast
Across 8 modelled locations in Switzerland, a standard 10 kWp south-facing system produces about 12,189 kWh in a typical year on average. Tomorrow's weather-based city forecasts range from 41.8 to 54.4 kWh for the same reference setup.
Forecast for Wednesday, August 5, 2026 · Updated Aug 4, 2026, 06:53 PM UTC · City samples, not a national production forecast
Tomorrow in Switzerland
One system. Different local weather.
Using the same installation in every location isolates the effect of weather and geography. Enter your own roof on any city page for a personal estimate.
- City average
- 48.6 kWh
- Lowest city estimate
- 41.8 kWh
- Highest city estimate
- 54.4 kWh
Representative locations
Solar forecasts for major cities in Switzerland
Typical year
Monthly solar production across Switzerland
The bars average the 8 city reference points. Typical annual output ranges from about 11,342 to 13,357 kWh for the 10 kWp setup. Of the locations modelled, Lugano has the highest typical annual output and St. Gallen the lowest.
Typical monthly profiles use the European Commission JRC PVGIS multi-year climate series.
Local profiles
All 8 Switzerland city forecasts
Use the data
Download the country snapshot or inspect the assumptions, sources, uncertainty ranges and refresh rules.