How much will solar panels produce in Clermont-Ferrand?

A 6 kWp system facing south at 35° tilt in Clermont-Ferrand produces about 7,473 kWh a year. In a weak year that is 6,260 kWh, in a good one 8,686 kWh — 1,246 kWh per kWp.

That’s about 159% of a typical home’s yearly use (4,700 kWh).

Calculate for my roof

Based on 2014–2023 satellite weather data

Production by month

05001,0001,500JanJanuary: 6 kWp 327 kWh, range 255–399FebFebruary: 6 kWp 450 kWh, range 327–573MarMarch: 6 kWp 659 kWh, range 529–788AprApril: 6 kWp 762 kWh, range 628–895MayMay: 6 kWp 785 kWh, range 634–937JunJune: 6 kWp 843 kWh, range 693–993JulJuly: 6 kWp 913 kWh, range 719–1,108AugAugust: 6 kWp 849 kWh, range 706–993SepSeptember: 6 kWp 741 kWh, range 610–873OctOctober: 6 kWp 538 kWh, range 413–663NovNovember: 6 kWp 344 kWh, range 264–425DecDecember: 6 kWp 315 kWh, range 216–415

kWh per month

A typical day in July

The sunniest month in Clermont-Ferrand. Output peaks around 11:00 solar time, at about 3.5 kWh in the best hour.

0:006:0012:0018:0023:00 3.5 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 255 327 399
February 327 450 573
March 529 659 788
April 628 762 895
May 634 785 937
June 693 843 993
July 719 913 1,108
August 706 849 993
September 610 741 873
October 413 538 663
November 264 344 425
December 216 315 415
Year 6,260 7,473 8,686

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 Clermont-Ferrand?

From November to February the system produces about 1,436 kWh, which is 19% of the year. The weakest month (December) gives roughly 315 kWh.

Is an east-west roof worth it in Clermont-Ferrand?

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 Clermont-Ferrand

Ground mount or roof in Clermont-Ferrand?

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 Clermont-Ferrand

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