How much solar power does Trey already produce?

35 solar installations with 1.1 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 Trey?

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 Trey

35 solar installations with 1.1 MWp of capacity are installed in Trey.

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Solar installations: 35
Installed capacity: 1.1 MWp
Roof potential in use: ~13%; Estimate
Rank in the canton of Vaud: 101 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 Trey

The suitable roofs of Trey could deliver around 8 GWh of solar power a year. An estimated ~13% of it is used today.

Roof potential per month (GWh)

A LEG is forming in Trey

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

Communities in Trey

Groupe E SA - Trey
Forming
Trey, VD

Communities nearby

Romande Energie SA - Villarzel
Forming
Villarzel, VD
Romande Energie SA - Henniez
Forming
Henniez, VD
Groupe E SA - Payerne
Forming
Payerne, VD

Join the LEG in Trey

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

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Questions about solar power in Trey

How much solar power does Trey already produce?: 35 solar installations with 1.1 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 Trey?: 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	2	33
2012	0	0
2013	2	437
2014	0	0
2015	2	19
2016	1	6
2017	4	56
2018	3	29
2019	7	57
2020	2	8
2021	1	9
2022	1	8
2023	6	70
2024	1	16
2025	1	351
2026	2	37

Month	GWh
Jan	0.2
Feb	0.4
Mar	0.7
Apr	0.9
May	1.1
Jun	1.2
Jul	1.2
Aug	1.1
Sept	0.8
Oct	0.5
Nov	0.2
Dec	0.2

Solar power in Trey

How much sun falls on the roofs of Trey

A LEG is forming in Trey

Communities in Trey

Groupe E SA - Trey

Communities nearby

Romande Energie SA - Villarzel

Romande Energie SA - Henniez

Groupe E SA - Payerne

Join the LEG in Trey

Questions about solar power in Trey