Alpine solar plants «Solarexpress»: statistics, performance and annual/winter yield
Annual and winter yield of alpine solar plants of the «Solarexpress»
The statistics on this page show the installed capacity and the annual/winter yields of the solar systems in the Alps that have been installed by the «Solarexpress», and how much energy they will produce.
A comparison with the nationwide expansion of photovoltaics in Switzerland in 2023 shows the contribution that Alpine solar plants will make to energy production.
Only those alpine solar plants that have at least reached the project status «Publicly available» (= planning application) are taken into account.
Project status:
Sorting:
| Name | Height | Canton | Power
MWp | Yield
Year
GWh |
Winter
GWh |
| Madrisa Solar | 1962 | GR | 10.8 | 16.9 | 7.2 |
| NalpSolar | 2003 | GR | 8.1 | 10.7 | 4.1 |
| Sedrun Solar | 2029 | GR | 19.2 | 31.0 | 14.4 |
| Sidenplangg | 1894 | UR | 8.0 | 11.2 | 4.6 |
| Vorab | 2591 | GR | 8.6 | 12.4 | 4.9 |
| Total | | | 54.7 | 82.2 | 35.2 |
Last updated: 29.08.2025
Target «Solarexpress»: One-off increase of 2000 GWh/year (=2 TWh/year)
Currently as per settings: One-time increase of 82.2 GWh/year = 4.1% of the 2 TWh/year.
Comparison of the Alpine solar installations of the «Solarexpress» with the nationwide photovoltaic expansion in Switzerland in 2023
| Expansion
Switzerland
2023 | Alpine
Acc. to table | % |
| Power MWp | 1640 | 54.7 | 3.3 |
| Annual yield GWh | 1640 | 82.2 | 5.0 |
| Winter yield GWh | 492 | 35.2 | 7.1 |
Legend:
- Expansion Switzerland 2023
The figures for the increase in output (photovoltaics) in 2023 come from SwissSolar.
A rate of 1000kWh/kWp was used to calculate the annual yield.
A rate of 30% of the annual yield was used to calculate the winter yield.
- Alpine
The current values in the Total row of the upper table are used for the calculation. If a status is switched on or off in the selection criteria, the values in the Alpin column of the lower table are updated.
- %
This column shows how large the output, annual and winter yield of the alpine solar plants of the «Solarexpress» are in relation to the Swiss-wide photovoltaic expansion of 2023. The update of the values of this column is done as described under Alpine.
In the two statistics above, alpine solar plants are included that have been legally approved but have been put on hold for economic reasons. As of January 29, 2025, there are two alpine solar plants.
Comparison of the alpine solar plants «Grengiols-Solar» with the Swiss-wide photovoltaic expansion in 2023
The «Grengiols-Solar» project involves by far the largest planned Alpine solar plant. «Grengiols-Solar» will be around three times larger than the second largest planned plant.
| Expansion
Switzerland
2023 | Grengiols-
Solar | % |
| Power MWp | 1640 | 92 | 5.6 |
| Annual yield GWh | 1640 | 148 | 9.0 |
| Winter yield GWh | 492 | 64 | 13.0 |
Legend:
- Expansion Switzerland 2023
As above.
- Grengiols-Solar
The values used are those given for «Grengiols-Solar», for example, on the DETEC website.
- %
This column shows that the winter yield of «Grengiols-Solar» corresponds to around 13% of the winter yield of the Swiss-wide photovoltaic expansion in 2023. Not nothing, but nowhere near as much as one might expect.
The expansion of photovoltaics in Switzerland in 2023 was mainly carried out on existing infrastructure and did not require any (alpine) open spaces in largely intact ecosystems. This in contrast to the alpine solar plants of «Grengiols-Solar».
The addition of photovoltaic capacity in Switzerland was greater in 2024 than in 2023. Estimates amount to 1800 MWp.
Published/updated: 11.2.2025/-