How much will solar panels produce in Firenze?

A 6 kWp system facing south at 35° tilt in Firenze produces about 8,241 kWh a year. In a weak year that is 6,866 kWh, in a good one 9,617 kWh — 1,374 kWh per kWp.

That’s about 305% 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 417 kWh, range 311–523FebFebruary: 6 kWp 489 kWh, range 373–605MarMarch: 6 kWp 703 kWh, range 544–862AprApril: 6 kWp 805 kWh, range 661–949MayMay: 6 kWp 849 kWh, range 676–1,023JunJune: 6 kWp 934 kWh, range 775–1,092JulJuly: 6 kWp 1,011 kWh, range 837–1,184AugAugust: 6 kWp 945 kWh, range 789–1,102SepSeptember: 6 kWp 785 kWh, range 647–924OctOctober: 6 kWp 628 kWh, range 497–760NovNovember: 6 kWp 404 kWh, range 317–492DecDecember: 6 kWp 327 kWh, range 252–402

kWh per month

A typical day in July

The sunniest month in Firenze. 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 311 417 523
February 373 489 605
March 544 703 862
April 661 805 949
May 676 849 1,023
June 775 934 1,092
July 837 1,011 1,184
August 789 945 1,102
September 647 785 924
October 497 628 760
November 317 404 492
December 252 327 402
Year 6,866 8,241 9,617

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 Firenze?

From November to February the system produces about 1,638 kWh, which is 20% of the year. The weakest month (December) gives roughly 327 kWh.

Is an east-west roof worth it in Firenze?

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 Firenze

Ground mount or roof in Firenze?

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 Firenze

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