How much will solar panels produce in Cagliari?

A 6 kWp system facing south at 35° tilt in Cagliari produces about 9,887 kWh a year. In a weak year that is 8,279 kWh, in a good one 11,496 kWh — 1,648 kWh per kWp.

That’s about 366% 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 601 kWh, range 486–717FebFebruary: 6 kWp 651 kWh, range 514–787MarMarch: 6 kWp 781 kWh, range 609–953AprApril: 6 kWp 878 kWh, range 722–1,034MayMay: 6 kWp 962 kWh, range 789–1,135JunJune: 6 kWp 991 kWh, range 830–1,153JulJuly: 6 kWp 1,065 kWh, range 891–1,239AugAugust: 6 kWp 1,042 kWh, range 867–1,217SepSeptember: 6 kWp 875 kWh, range 725–1,025OctOctober: 6 kWp 816 kWh, range 666–967NovNovember: 6 kWp 596 kWh, range 469–722DecDecember: 6 kWp 563 kWh, range 457–669

kWh per month

A typical day in July

The sunniest month in Cagliari. Output peaks around 12:00 solar time, at about 4.2 kWh in the best hour.

0:006:0012:0018:0023:00 4.2 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 486 601 717
February 514 651 787
March 609 781 953
April 722 878 1,034
May 789 962 1,135
June 830 991 1,153
July 891 1,065 1,239
August 867 1,042 1,217
September 725 875 1,025
October 666 816 967
November 469 596 722
December 457 563 669
Year 8,279 9,887 11,496

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 Cagliari?

From November to February the system produces about 2,411 kWh, which is 25% of the year. The weakest month (December) gives roughly 563 kWh.

Is an east-west roof worth it in Cagliari?

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 Cagliari

Ground mount or roof in Cagliari?

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 Cagliari

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

All cities in Italy

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