How much solar power does Wattwil already produce?

386 solar installations with 14 MWp in total are listed in the Swiss Federal Office of Energy register. That is an estimated ~19% of the municipality's roof potential.

Where do these numbers come from?

From federal open data: the register of electricity production plants and the solar potential of Swiss municipalities (Swiss Federal Office of Energy), plus swisstopo municipal boundaries. We only show totals per municipality, never individual installations.

Can I start a LEG in Wattwil?

Yes. A local electricity community is possible in any municipality, as long as all participants are in the same grid area and close to each other. UpGrid handles registration, metering and billing.

All municipalities in the canton of St. Gallen

Solar power · Canton of St. GallenLEG forming

Solar power in Wattwil

386 solar installations with 14 MWp of capacity are installed in Wattwil.

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Solar installations: 386
Installed capacity: 14 MWp
Roof potential in use: ~19%; Estimate
Rank in the canton of St. Gallen: 29 of 75; by roof potential in use

Growth by build yearNew capacity installed per year in kWp

Roof potential

How much sun falls on the roofs of Wattwil

The suitable roofs of Wattwil could deliver around 73 GWh of solar power a year. An estimated ~19% of it is used today.

Roof potential per month (GWh)

A LEG is forming in Wattwil

A local electricity community is collecting sign-ups here. The more neighbours join, the sooner it starts.

Communities in Wattwil

Elektro-Genossenschaft Ulisbach - Wattwil
Forming
Wattwil, SG
St. Gallisch-Appenzellische Kraftwerke AG - Wattwil
Forming
Wattwil, SG
Thurwerke AG - Wattwil
Forming
Wattwil, SG

Communities nearby

St. Gallisch-Appenzellische Kraftwerke AG - Lichtensteig
Forming
Lichtensteig, SG
St. Gallisch-Appenzellische Kraftwerke AG - Gommiswald
Active
Gommiswald, SG
2 sites
rwt Regionalwerk Toggenburg AG - Bütschwil-Ganterschwil
Forming
Bütschwil-Ganterschwil, SG

Join the LEG in Wattwil

Get solar power from your neighbourhood. Joining is free and you keep your electricity supplier.

Go to the community

Questions about solar power in Wattwil

How much solar power does Wattwil already produce?: 386 solar installations with 14 MWp in total are listed in the Swiss Federal Office of Energy register. That is an estimated ~19% of the municipality's roof potential.
Where do these numbers come from?: From federal open data: the register of electricity production plants and the solar potential of Swiss municipalities (Swiss Federal Office of Energy), plus swisstopo municipal boundaries. We only show totals per municipality, never individual installations.
Can I start a LEG in Wattwil?: Yes. A local electricity community is possible in any municipality, as long as all participants are in the same grid area and close to each other. UpGrid handles registration, metering and billing.

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	8	1’576
2012	8	112
2013	10	229
2014	6	408
2015	19	1’383
2016	10	392
2017	12	214
2018	3	41
2019	18	328
2020	14	228
2021	44	850
2022	37	1’566
2023	68	2’154
2024	59	1’808
2025	55	2’066
2026	15	612

Month	GWh
Jan	2.3
Feb	3.6
Mar	6.1
Apr	8
May	8.8
Jun	9.6
Jul	10
Aug	9.1
Sept	6.5
Oct	4.3
Nov	2.5
Dec	2

Solar power in Wattwil

How much sun falls on the roofs of Wattwil

A LEG is forming in Wattwil

Communities in Wattwil

Elektro-Genossenschaft Ulisbach - Wattwil

St. Gallisch-Appenzellische Kraftwerke AG - Wattwil

Thurwerke AG - Wattwil

Communities nearby

St. Gallisch-Appenzellische Kraftwerke AG - Lichtensteig

St. Gallisch-Appenzellische Kraftwerke AG - Gommiswald

rwt Regionalwerk Toggenburg AG - Bütschwil-Ganterschwil

Join the LEG in Wattwil

Questions about solar power in Wattwil