How much will solar panels produce in Wavre?

A 5 kWp system facing south at 35° tilt in Wavre produces about 5,382 kWh a year. In a weak year that is 4,461 kWh, in a good one 6,303 kWh — 1,076 kWh per kWp.

That’s about 154% of a typical home’s yearly use (3,500 kWh).

Calculate for my roof

Based on 2014–2023 satellite weather data

Production by month

02505007501,000JanJanuary: 5 kWp 162 kWh, range 110–214FebFebruary: 5 kWp 272 kWh, range 188–356MarMarch: 5 kWp 460 kWh, range 343–577AprApril: 5 kWp 622 kWh, range 504–740MayMay: 5 kWp 677 kWh, range 538–816JunJune: 5 kWp 678 kWh, range 549–807JulJuly: 5 kWp 654 kWh, range 519–790AugAugust: 5 kWp 648 kWh, range 528–768SepSeptember: 5 kWp 544 kWh, range 444–643OctOctober: 5 kWp 340 kWh, range 263–416NovNovember: 5 kWp 225 kWh, range 169–281DecDecember: 5 kWp 132 kWh, range 69–194

kWh per month

A typical day in June

The sunniest month in Wavre. 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 110 162 214
February 188 272 356
March 343 460 577
April 504 622 740
May 538 677 816
June 549 678 807
July 519 654 790
August 528 648 768
September 444 544 643
October 263 340 416
November 169 225 281
December 69 132 194
Year 4,461 5,382 6,303

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 Wavre?

From November to February the system produces about 790 kWh, which is 15% of the year. The weakest month (December) gives roughly 132 kWh.

Is an east-west roof worth it in Wavre?

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 Wavre

Ground mount or roof in Wavre?

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 Wavre

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

All cities in Belgium

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