How much solar power does Arth already produce?

461 solar installations with 13.3 MWp in total are listed in the Swiss Federal Office of Energy register. That is an estimated ~21% 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 Arth?

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 Schwyz

Solar power · Canton of SchwyzLEG forming

Solar power in Arth

461 solar installations with 13.3 MWp of capacity are installed in Arth.

Go to the community

Solar installations: 461
Installed capacity: 13.3 MWp
Roof potential in use: ~21%; Estimate
Rank in the canton of Schwyz: 3 of 30; 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 Arth

The suitable roofs of Arth could deliver around 64 GWh of solar power a year. An estimated ~21% of it is used today.

Roof potential per month (GWh)

A LEG is forming in Arth

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

Communities in Arth

Gemeindewerke Arth Elektrizitäts- und Wasserwerk - Arth
Forming
Arth, SZ

Communities nearby

EWS AG - Steinerberg
Forming
Steinerberg, SZ
ebs Energie AG - Lauerz
Forming
Lauerz, SZ
EWS AG - Gersau
Forming
Gersau, SZ

Join the LEG in Arth

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

Go to the community

Questions about solar power in Arth

How much solar power does Arth already produce?: 461 solar installations with 13.3 MWp in total are listed in the Swiss Federal Office of Energy register. That is an estimated ~21% 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 Arth?: 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	7	142
2012	13	437
2013	24	223
2014	18	339
2015	17	155
2016	25	307
2017	8	166
2018	16	437
2019	17	223
2020	20	1’711
2021	25	1’681
2022	37	946
2023	72	2’043
2024	84	2’133
2025	69	2’130
2026	9	195

Month	GWh
Jan	1.7
Feb	3
Mar	5.3
Apr	7.2
May	8.1
Jun	8.7
Jul	9
Aug	8.1
Sept	5.8
Oct	3.7
Nov	2
Dec	1.4

Solar power in Arth

How much sun falls on the roofs of Arth

A LEG is forming in Arth

Communities in Arth

Gemeindewerke Arth Elektrizitäts- und Wasserwerk - Arth

Communities nearby

EWS AG - Steinerberg

ebs Energie AG - Lauerz

EWS AG - Gersau

Join the LEG in Arth

Questions about solar power in Arth