How much solar power does Aarau already produce?

547 solar installations with 15.5 MWp in total are listed in the Swiss Federal Office of Energy register. That is an estimated ~13% 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 Aarau?

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 Aargau

Solar power · Canton of AargauLEG forming

Solar power in Aarau

547 solar installations with 15.5 MWp of capacity are installed in Aarau.

Go to the community

Solar installations: 547
Installed capacity: 15.5 MWp
Roof potential in use: ~13%; Estimate
Rank in the canton of Aargau: 113 of 196; 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 Aarau

The suitable roofs of Aarau could deliver around 123 GWh of solar power a year. An estimated ~13% of it is used today.

Roof potential per month (GWh)

A LEG is forming in Aarau

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

Communities in Aarau

Eniwa AG - Aarau
Forming
Aarau, AG

Communities nearby

Eniwa AG - Buchs (AG)
Forming
Buchs (AG), AG
LEG Buchs
Forming
Buchs, AG
Eniwa AG - Unterentfelden
Registered with the grid operator
Unterentfelden, AG

Join the LEG in Aarau

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

Go to the community

Questions about solar power in Aarau

How much solar power does Aarau already produce?: 547 solar installations with 15.5 MWp in total are listed in the Swiss Federal Office of Energy register. That is an estimated ~13% 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 Aarau?: 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	15	131
2012	4	65
2013	3	322
2014	9	194
2015	19	635
2016	11	197
2017	9	94
2018	18	541
2019	35	533
2020	42	1’038
2021	37	1’208
2022	51	1’570
2023	100	2’041
2024	104	3’369
2025	77	3’102
2026	13	413

Month	GWh
Jan	2.7
Feb	4.8
Mar	10.1
Apr	13.9
May	16.3
Jun	17.6
Jul	18.4
Aug	16.1
Sept	11.5
Oct	6.5
Nov	3
Dec	2.2

Solar power in Aarau

How much sun falls on the roofs of Aarau

A LEG is forming in Aarau

Communities in Aarau

Eniwa AG - Aarau

Communities nearby

Eniwa AG - Buchs (AG)

LEG Buchs

Eniwa AG - Unterentfelden

Join the LEG in Aarau

Questions about solar power in Aarau