How much will solar panels produce in Arnhem?

A 4 kWp system facing south at 35° tilt in Arnhem produces about 4,173 kWh a year. In a weak year that is 3,436 kWh, in a good one 4,911 kWh — 1,043 kWh per kWp.

That’s about 149% of a typical home’s yearly use (2,800 kWh).

Calculate for my roof

Based on 2014–2023 satellite weather data

Production by month

0200400600800JanJanuary: 4 kWp 124 kWh, range 95–153FebFebruary: 4 kWp 213 kWh, range 150–276MarMarch: 4 kWp 351 kWh, range 266–436AprApril: 4 kWp 466 kWh, range 371–562MayMay: 4 kWp 522 kWh, range 406–639JunJune: 4 kWp 527 kWh, range 422–632JulJuly: 4 kWp 515 kWh, range 411–618AugAugust: 4 kWp 502 kWh, range 413–591SepSeptember: 4 kWp 402 kWh, range 322–483OctOctober: 4 kWp 248 kWh, range 189–306NovNovember: 4 kWp 169 kWh, range 130–208DecDecember: 4 kWp 88 kWh, range 54–122

kWh per month

A typical day in June

The sunniest month in Arnhem. Output peaks around 11:00 solar time, at about 2.1 kWh in the best hour.

0:006:0012:0018:0023:00 2.1 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 95 124 153
February 150 213 276
March 266 351 436
April 371 466 562
May 406 522 639
June 422 527 632
July 411 515 618
August 413 502 591
September 322 402 483
October 189 248 306
November 130 169 208
December 54 88 122
Year 3,436 4,173 4,911

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 Arnhem?

From November to February the system produces about 594 kWh, which is 14% of the year. The weakest month (December) gives roughly 88 kWh.

Is an east-west roof worth it in Arnhem?

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 Arnhem

Ground mount or roof in Arnhem?

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 Arnhem

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