How much solar power does Grenchen already produce?

333 solar installations with 15.8 MWp in total are listed in the Swiss Federal Office of Energy register. That is an estimated ~14% 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 Grenchen?

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 Solothurn

Solar power · Canton of SolothurnLEG forming

Solar power in Grenchen

333 solar installations with 15.8 MWp of capacity are installed in Grenchen.

Go to the community

Solar installations: 333
Installed capacity: 15.8 MWp
Roof potential in use: ~14%; Estimate
Rank in the canton of Solothurn: 45 of 104; 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 Grenchen

The suitable roofs of Grenchen could deliver around 115 GWh of solar power a year. An estimated ~14% of it is used today.

Roof potential per month (GWh)

A LEG is forming in Grenchen

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

Communities in Grenchen

SWG - Grenchen
Forming
Grenchen, SO

Communities nearby

BKW Energie AG - Bettlach
Forming
Bettlach, SO
BKW Energie AG - Selzach
Forming
Selzach, SO
BKW Energie AG - Lommiswil
Forming
Lommiswil, SO

Join the LEG in Grenchen

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

Go to the community

Questions about solar power in Grenchen

How much solar power does Grenchen already produce?: 333 solar installations with 15.8 MWp in total are listed in the Swiss Federal Office of Energy register. That is an estimated ~14% 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 Grenchen?: 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	20	381
2012	9	351
2013	6	1’701
2014	4	51
2015	12	699
2016	10	617
2017	3	137
2018	10	440
2019	6	150
2020	15	772
2021	19	498
2022	32	1’292
2023	57	2’505
2024	60	2’289
2025	64	3’595
2026	6	313

Month	GWh
Jan	3.4
Feb	5.5
Mar	9.5
Apr	12.6
May	14.7
Jun	16
Jul	16.2
Aug	13.6
Sept	10.5
Oct	6.6
Nov	3.6
Dec	2.7

Solar power in Grenchen

How much sun falls on the roofs of Grenchen

A LEG is forming in Grenchen

Communities in Grenchen

SWG - Grenchen

Communities nearby

BKW Energie AG - Bettlach

BKW Energie AG - Selzach

BKW Energie AG - Lommiswil

Join the LEG in Grenchen

Questions about solar power in Grenchen