How much will solar panels produce in Mons?

A 5 kWp system facing south at 35° tilt in Mons produces about 5,428 kWh a year. In a weak year that is 4,525 kWh, in a good one 6,331 kWh — 1,086 kWh per kWp.

That’s about 155% 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 172 kWh, range 120–223FebFebruary: 5 kWp 293 kWh, range 200–385MarMarch: 5 kWp 474 kWh, range 350–599AprApril: 5 kWp 630 kWh, range 504–756MayMay: 5 kWp 676 kWh, range 540–811JunJune: 5 kWp 675 kWh, range 542–807JulJuly: 5 kWp 645 kWh, range 508–781AugAugust: 5 kWp 648 kWh, range 533–764SepSeptember: 5 kWp 540 kWh, range 444–637OctOctober: 5 kWp 361 kWh, range 291–431NovNovember: 5 kWp 237 kWh, range 187–288DecDecember: 5 kWp 144 kWh, range 87–200

kWh per month

A typical day in May

The sunniest month in Mons. 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 120 172 223
February 200 293 385
March 350 474 599
April 504 630 756
May 540 676 811
June 542 675 807
July 508 645 781
August 533 648 764
September 444 540 637
October 291 361 431
November 187 237 288
December 87 144 200
Year 4,525 5,428 6,331

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 Mons?

From November to February the system produces about 845 kWh, which is 15% of the year. The weakest month (December) gives roughly 144 kWh.

Is an east-west roof worth it in Mons?

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 Mons

Ground mount or roof in Mons?

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 Mons

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