How much will solar panels produce in Locarno?

A 8 kWp system facing south at 35° tilt in Locarno produces about 10,518 kWh a year. In a weak year that is 8,722 kWh, in a good one 12,314 kWh — 1,315 kWh per kWp.

That’s about 234% of a typical home’s yearly use (4,500 kWh).

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Based on 2014–2023 satellite weather data

Production by month

05001,0001,5002,000JanJanuary: 8 kWp 530 kWh, range 391–670FebFebruary: 8 kWp 689 kWh, range 502–876MarMarch: 8 kWp 991 kWh, range 780–1,202AprApril: 8 kWp 1,031 kWh, range 810–1,251MayMay: 8 kWp 1,047 kWh, range 861–1,233JunJune: 8 kWp 1,141 kWh, range 940–1,343JulJuly: 8 kWp 1,286 kWh, range 1,016–1,556AugAugust: 8 kWp 1,190 kWh, range 980–1,400SepSeptember: 8 kWp 954 kWh, range 778–1,131OctOctober: 8 kWp 729 kWh, range 596–861NovNovember: 8 kWp 528 kWh, range 318–738DecDecember: 8 kWp 416 kWh, range 302–530

kWh per month

A typical day in July

The sunniest month in Locarno. Output peaks around 12:00 solar time, at about 4.8 kWh in the best hour.

0:006:0012:0018:0023:00 4.8 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 391 530 670
February 502 689 876
March 780 991 1,202
April 810 1,031 1,251
May 861 1,047 1,233
June 940 1,141 1,343
July 1,016 1,286 1,556
August 980 1,190 1,400
September 778 954 1,131
October 596 729 861
November 318 528 738
December 302 416 530
Year 8,722 10,518 12,314

The months don’t add up exactly to the yearly figure, because each one is the typical value across many years.

Common questions

How much do solar panels produce in winter in Locarno?

From November to February the system produces about 2,163 kWh, which is 21% of the year. The weakest month (December) gives roughly 416 kWh.

Is an east-west roof worth it in Locarno?

An east-west system typically produces 10–25% less per kWp than one facing south, but spreads production more evenly through the day. The exact difference depends on tilt and shading.

Compare an east-west roof for Locarno

Ground mount or roof in Locarno?

A ground mount can be tilted and aimed freely, which can add some yield, but it costs more and needs space. Compare both for your own plot.

Check a ground-mounted system in Locarno

Your roof is not an average roof

Set your own tilt, direction, shading and inverter limit and get a range for your address.

Calculate for my roof

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Climate data: Photovoltaic Geographical Information System (PVGIS) — European Commission, Joint Research Centre