How much will solar panels produce in Trieste?

A 6 kWp system facing south at 35° tilt in Trieste produces about 8,027 kWh a year. In a weak year that is 6,670 kWh, in a good one 9,384 kWh — 1,338 kWh per kWp.

That’s about 297% of a typical home’s yearly use (2,700 kWh).

Calculate for my roof

Based on 2014–2023 satellite weather data

Production by month

05001,0001,500JanJanuary: 6 kWp 362 kWh, range 235–490FebFebruary: 6 kWp 438 kWh, range 297–579MarMarch: 6 kWp 749 kWh, range 573–926AprApril: 6 kWp 778 kWh, range 613–944MayMay: 6 kWp 820 kWh, range 675–966JunJune: 6 kWp 917 kWh, range 742–1,093JulJuly: 6 kWp 965 kWh, range 796–1,135AugAugust: 6 kWp 928 kWh, range 761–1,096SepSeptember: 6 kWp 755 kWh, range 598–912OctOctober: 6 kWp 579 kWh, range 468–690NovNovember: 6 kWp 346 kWh, range 242–451DecDecember: 6 kWp 324 kWh, range 203–446

kWh per month

A typical day in July

The sunniest month in Trieste. Output peaks around 11:00 solar time, at about 3.9 kWh in the best hour.

0:006:0012:0018:0023:00 3.9 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 235 362 490
February 297 438 579
March 573 749 926
April 613 778 944
May 675 820 966
June 742 917 1,093
July 796 965 1,135
August 761 928 1,096
September 598 755 912
October 468 579 690
November 242 346 451
December 203 324 446
Year 6,670 8,027 9,384

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 Trieste?

From November to February the system produces about 1,471 kWh, which is 18% of the year. The weakest month (December) gives roughly 324 kWh.

Is an east-west roof worth it in Trieste?

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 Trieste

Ground mount or roof in Trieste?

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 Trieste

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