How much will solar panels produce in Rouen?

A 6 kWp system facing south at 35° tilt in Rouen produces about 6,735 kWh a year. In a weak year that is 5,630 kWh, in a good one 7,840 kWh — 1,123 kWh per kWp.

That’s about 143% 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 223 kWh, range 167–278FebFebruary: 6 kWp 349 kWh, range 245–453MarMarch: 6 kWp 539 kWh, range 394–683AprApril: 6 kWp 761 kWh, range 590–932MayMay: 6 kWp 777 kWh, range 613–941JunJune: 6 kWp 821 kWh, range 642–1,000JulJuly: 6 kWp 803 kWh, range 633–974AugAugust: 6 kWp 742 kWh, range 599–885SepSeptember: 6 kWp 672 kWh, range 540–804OctOctober: 6 kWp 460 kWh, range 367–553NovNovember: 6 kWp 281 kWh, range 227–335DecDecember: 6 kWp 194 kWh, range 147–242

kWh per month

A typical day in June

The sunniest month in Rouen. Output peaks around 11:00 solar time, at about 3.3 kWh in the best hour.

0:006:0012:0018:0023:00 3.3 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 167 223 278
February 245 349 453
March 394 539 683
April 590 761 932
May 613 777 941
June 642 821 1,000
July 633 803 974
August 599 742 885
September 540 672 804
October 367 460 553
November 227 281 335
December 147 194 242
Year 5,630 6,735 7,840

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 Rouen?

From November to February the system produces about 1,047 kWh, which is 16% of the year. The weakest month (December) gives roughly 194 kWh.

Is an east-west roof worth it in Rouen?

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 Rouen

Ground mount or roof in Rouen?

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 Rouen

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