How much solar power does Cossonay already produce?

228 solar installations with 4.7 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 Cossonay?

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 Vaud

Solar power · Canton of VaudLEG forming

Solar power in Cossonay

228 solar installations with 4.7 MWp of capacity are installed in Cossonay.

Go to the community

Solar installations: 228
Installed capacity: 4.7 MWp
Roof potential in use: ~17%; Estimate
Rank in the canton of Vaud: 50 of 300; 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 Cossonay

The suitable roofs of Cossonay could deliver around 28 GWh of solar power a year. An estimated ~17% of it is used today.

Roof potential per month (GWh)

A LEG is forming in Cossonay

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

Communities in Cossonay

Romande Energie SA - Cossonay
Forming
Cossonay, VD

Communities nearby

Romande Energie SA - Senarclens
Forming
Senarclens, VD
Romande Energie SA - Penthalaz
Forming
Penthalaz, VD
Romande Energie SA - Dizy
Forming
Dizy, VD

Join the LEG in Cossonay

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

Go to the community

Questions about solar power in Cossonay

How much solar power does Cossonay already produce?: 228 solar installations with 4.7 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 Cossonay?: 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	1	22
2012	2	221
2013	6	562
2014	2	141
2015	12	238
2016	11	94
2017	11	375
2018	17	280
2019	7	99
2020	16	159
2021	26	453
2022	22	200
2023	37	543
2024	42	944
2025	15	368
2026	1	12

Month	GWh
Jan	0.8
Feb	1.2
Mar	2.3
Apr	3.1
May	3.6
Jun	3.9
Jul	4.1
Aug	3.6
Sept	2.7
Oct	1.6
Nov	0.8
Dec	0.6

Solar power in Cossonay

How much sun falls on the roofs of Cossonay

A LEG is forming in Cossonay

Communities in Cossonay

Romande Energie SA - Cossonay

Communities nearby

Romande Energie SA - Senarclens

Romande Energie SA - Penthalaz

Romande Energie SA - Dizy

Join the LEG in Cossonay

Questions about solar power in Cossonay