How much solar power does Tresa already produce?

224 solar installations with 4.2 MWp in total are listed in the Swiss Federal Office of Energy register. That is an estimated ~9.7% 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 Tresa?

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 Ticino

Solar power · Canton of TicinoLEG forming

Solar power in Tresa

224 solar installations with 4.2 MWp of capacity are installed in Tresa.

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Solar installations: 224
Installed capacity: 4.2 MWp
Roof potential in use: ~9.7%; Estimate
Rank in the canton of Ticino: 47 of 99; 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 Tresa

The suitable roofs of Tresa could deliver around 44 GWh of solar power a year. An estimated ~9.7% of it is used today.

Roof potential per month (GWh)

A LEG is forming in Tresa

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

Communities in Tresa

Aziende Industriali di Lugano (AIL) SA - Tresa
Forming
Tresa, TI
LEG Croglio
Forming
Croglio, TI
LEG Monteggio
Forming
Monteggio, TI
LEG Ponte Tresa
Forming
Ponte Tresa, TI
LEG Sessa
Forming
Sessa, TI

Communities nearby

Aziende Industriali di Lugano (AIL) SA - Pura
Forming
Pura, TI
LEG Astano
Forming
Astano, TI

Join the LEG in Tresa

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

Go to the community

Questions about solar power in Tresa

How much solar power does Tresa already produce?: 224 solar installations with 4.2 MWp in total are listed in the Swiss Federal Office of Energy register. That is an estimated ~9.7% 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 Tresa?: 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	46
2012	4	64
2013	5	49
2014	4	47
2015	15	170
2016	19	239
2017	14	108
2018	11	453
2019	11	118
2020	10	190
2021	10	175
2022	17	240
2023	39	1’359
2024	41	719
2025	14	170
2026	9	81

Month	GWh
Jan	1.4
Feb	1.9
Mar	3.4
Apr	4.3
May	5.5
Jun	6.2
Jul	6.6
Aug	5.5
Sept	3.9
Oct	2.4
Nov	1.3
Dec	1.1