How much will solar panels produce in Bologna?

A 6 kWp system facing south at 35° tilt in Bologna produces about 8,449 kWh a year. In a weak year that is 7,046 kWh, in a good one 9,851 kWh — 1,408 kWh per kWp.

That’s about 313% of a typical home’s yearly use (2,700 kWh).

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Based on 2014–2023 satellite weather data

Production by month

05001,0001,500JanJanuary: 6 kWp 477 kWh, range 368–587FebFebruary: 6 kWp 491 kWh, range 337–645MarMarch: 6 kWp 779 kWh, range 591–967AprApril: 6 kWp 837 kWh, range 672–1,001MayMay: 6 kWp 876 kWh, range 714–1,038JunJune: 6 kWp 936 kWh, range 778–1,095JulJuly: 6 kWp 979 kWh, range 807–1,151AugAugust: 6 kWp 950 kWh, range 793–1,107SepSeptember: 6 kWp 799 kWh, range 659–940OctOctober: 6 kWp 627 kWh, range 482–772NovNovember: 6 kWp 384 kWh, range 266–501DecDecember: 6 kWp 411 kWh, range 295–527

kWh per month

A typical day in July

The sunniest month in Bologna. 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 368 477 587
February 337 491 645
March 591 779 967
April 672 837 1,001
May 714 876 1,038
June 778 936 1,095
July 807 979 1,151
August 793 950 1,107
September 659 799 940
October 482 627 772
November 266 384 501
December 295 411 527
Year 7,046 8,449 9,851

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 Bologna?

From November to February the system produces about 1,763 kWh, which is 21% of the year. The weakest month (November) gives roughly 384 kWh.

Is an east-west roof worth it in Bologna?

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 Bologna

Ground mount or roof in Bologna?

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 Bologna

Your roof is not an average roof

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

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