706 solar installations with 18.6 MWp of capacity are installed in Rapperswil-Jona.
Go to the communityRoof potential
The suitable roofs of Rapperswil-Jona could deliver around 146 GWh of solar power a year. An estimated ~13% of it is used today.
A local electricity community is collecting sign-ups here. The more neighbours join, the sooner it starts.
Rapperswil-Jona, SG

Schmerikon, SG
Uznach, SG
Benken, SG
Get solar power from your neighbourhood. Joining is free and you keep your electricity supplier.
Sources: Swiss Federal Office of Energy (SFOE), swisstopo, opendata.swiss. As of October 2026. Totals per municipality only, no individual installations.
| Build year | Installations | Capacity (kWp) |
|---|---|---|
| before 2012 | 12 | 147 |
| 2012 | 12 | 186 |
| 2013 | 11 | 131 |
| 2014 | 7 | 215 |
| 2015 | 20 | 639 |
| 2016 | 22 | 325 |
| 2017 | 29 | 470 |
| 2018 | 19 | 435 |
| 2019 | 42 | 1’369 |
| 2020 | 48 | 1’250 |
| 2021 | 60 | 2’000 |
| 2022 | 84 | 2’506 |
| 2023 | 139 | 2’646 |
| 2024 | 113 | 3’808 |
| 2025 | 75 | 2’094 |
| 2026 | 13 | 411 |
18.5 MWp have been added since 2012.
| Month | GWh |
|---|---|
| Jan | 3.9 |
| Feb | 6.5 |
| Mar | 12.1 |
| Apr | 16.3 |
| May | 18.6 |
| Jun | 20 |
| Jul | 20.7 |
| Aug | 18.6 |
| Sept | 13.5 |
| Oct | 8.5 |
| Nov | 4.5 |
| Dec | 3.3 |