How much solar power does Herisau already produce?

587 solar installations with 15.2 MWp in total are listed in the Swiss Federal Office of Energy register. That is an estimated ~17% 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 Herisau?

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 Appenzell Ausserrhoden

Solar power · Canton of Appenzell AusserrhodenLEG forming

Solar power in Herisau

587 solar installations with 15.2 MWp of capacity are installed in Herisau.

Go to the community

Solar installations: 587
Installed capacity: 15.2 MWp
Roof potential in use: ~17%; Estimate
Rank in the canton of Appenzell Ausserrhoden: 17 of 20; 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 Herisau

The suitable roofs of Herisau could deliver around 91 GWh of solar power a year. An estimated ~17% of it is used today.

Roof potential per month (GWh)

A LEG is forming in Herisau

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

Communities in Herisau

St. Gallisch-Appenzellische Kraftwerke AG - Herisau
Forming
Herisau, AR

Communities nearby

St. Gallisch-Appenzellische Kraftwerke AG - Waldstatt
Forming
Waldstatt, AR
Elektrokorporation Wald - St. Peterzell - Schwellbrunn
Forming
Schwellbrunn, AR
St. Gallisch-Appenzellische Kraftwerke AG - Schwellbrunn
Forming
Schwellbrunn, AR

Join the LEG in Herisau

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

Go to the community

Questions about solar power in Herisau

How much solar power does Herisau already produce?: 587 solar installations with 15.2 MWp in total are listed in the Swiss Federal Office of Energy register. That is an estimated ~17% 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 Herisau?: 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	19	242
2012	16	903
2013	16	262
2014	18	573
2015	23	258
2016	15	1’009
2017	12	152
2018	16	325
2019	16	166
2020	21	610
2021	28	1’077
2022	70	1’815
2023	110	2’452
2024	108	2’500
2025	91	2’789
2026	8	110

Month	GWh
Jan	2.7
Feb	4.4
Mar	7.7
Apr	10.2
May	11.3
Jun	12.2
Jul	12.8
Aug	11.6
Sept	8.3
Oct	5.3
Nov	2.8
Dec	2.3

Solar power in Herisau

How much sun falls on the roofs of Herisau

A LEG is forming in Herisau

Communities in Herisau

St. Gallisch-Appenzellische Kraftwerke AG - Herisau

Communities nearby

St. Gallisch-Appenzellische Kraftwerke AG - Waldstatt

Elektrokorporation Wald - St. Peterzell - Schwellbrunn

St. Gallisch-Appenzellische Kraftwerke AG - Schwellbrunn

Join the LEG in Herisau

Questions about solar power in Herisau