How much will solar panels produce in Leuven?

A 5 kWp system facing south at 35° tilt in Leuven produces about 5,412 kWh a year. In a weak year that is 4,491 kWh, in a good one 6,334 kWh — 1,083 kWh per kWp.

That’s about 155% of a typical home’s yearly use (3,500 kWh).

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Based on 2014–2023 satellite weather data

Production by month

02505007501,000JanJanuary: 5 kWp 167 kWh, range 116–218FebFebruary: 5 kWp 281 kWh, range 196–367MarMarch: 5 kWp 460 kWh, range 342–579AprApril: 5 kWp 624 kWh, range 503–746MayMay: 5 kWp 682 kWh, range 541–823JunJune: 5 kWp 673 kWh, range 543–803JulJuly: 5 kWp 650 kWh, range 519–781AugAugust: 5 kWp 637 kWh, range 517–757SepSeptember: 5 kWp 546 kWh, range 446–646OctOctober: 5 kWp 338 kWh, range 260–417NovNovember: 5 kWp 232 kWh, range 179–284DecDecember: 5 kWp 131 kWh, range 67–195

kWh per month

A typical day in May

The sunniest month in Leuven. Output peaks around 11:00 solar time, at about 2.7 kWh in the best hour.

0:006:0012:0018:0023:00 2.7 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 116 167 218
February 196 281 367
March 342 460 579
April 503 624 746
May 541 682 823
June 543 673 803
July 519 650 781
August 517 637 757
September 446 546 646
October 260 338 417
November 179 232 284
December 67 131 195
Year 4,491 5,412 6,334

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 Leuven?

From November to February the system produces about 811 kWh, which is 15% of the year. The weakest month (December) gives roughly 131 kWh.

Is an east-west roof worth it in Leuven?

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 Leuven

Ground mount or roof in Leuven?

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 Leuven

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