How much solar power does Vionnaz already produce?

214 solar installations with 2.6 MWp in total are listed in the Swiss Federal Office of Energy register. That is an estimated ~11% 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 Vionnaz?

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 Valais

Solar power · Canton of ValaisLEG forming

Solar power in Vionnaz

214 solar installations with 2.6 MWp of capacity are installed in Vionnaz.

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Solar installations: 214
Installed capacity: 2.6 MWp
Roof potential in use: ~11%; Estimate
Rank in the canton of Valais: 35 of 122; 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 Vionnaz

The suitable roofs of Vionnaz could deliver around 23 GWh of solar power a year. An estimated ~11% of it is used today.

Roof potential per month (GWh)

A LEG is forming in Vionnaz

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

Communities in Vionnaz

Romande Energie SA - Vionnaz
Forming
Vionnaz, VS

Communities nearby

Romande Energie SA - Vouvry
Forming
Vouvry, VS
Romande Energie SA - Collombey-Muraz
Forming
Collombey-Muraz, VS
Romande Energie SA - Port-Valais
Forming
Port-Valais, VS

Join the LEG in Vionnaz

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

Go to the community

Questions about solar power in Vionnaz

How much solar power does Vionnaz already produce?: 214 solar installations with 2.6 MWp in total are listed in the Swiss Federal Office of Energy register. That is an estimated ~11% 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 Vionnaz?: 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	4	19
2012	2	92
2013	0	0
2014	5	29
2015	4	32
2016	10	88
2017	13	100
2018	15	114
2019	14	255
2020	9	65
2021	11	101
2022	27	512
2023	60	736
2024	30	353
2025	8	108
2026	2	27

Month	GWh
Jan	0.7
Feb	1.2
Mar	2
Apr	2.5
May	2.8
Jun	3.1
Jul	3.2
Aug	2.7
Sept	2.2
Oct	1.5
Nov	0.8
Dec	0.6

Solar power in Vionnaz

How much sun falls on the roofs of Vionnaz

A LEG is forming in Vionnaz

Communities in Vionnaz

Romande Energie SA - Vionnaz

Communities nearby

Romande Energie SA - Vouvry

Romande Energie SA - Collombey-Muraz

Romande Energie SA - Port-Valais

Join the LEG in Vionnaz

Questions about solar power in Vionnaz