How much will solar panels produce in Utrecht?

A 4 kWp system facing south at 35° tilt in Utrecht produces about 4,198 kWh a year. In a weak year that is 3,476 kWh, in a good one 4,920 kWh — 1,049 kWh per kWp.

That’s about 150% 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 90–158FebFebruary: 4 kWp 216 kWh, range 150–281MarMarch: 4 kWp 359 kWh, range 275–444AprApril: 4 kWp 469 kWh, range 372–566MayMay: 4 kWp 534 kWh, range 415–653JunJune: 4 kWp 536 kWh, range 442–629JulJuly: 4 kWp 510 kWh, range 408–611AugAugust: 4 kWp 500 kWh, range 411–589SepSeptember: 4 kWp 415 kWh, range 337–493OctOctober: 4 kWp 251 kWh, range 192–309NovNovember: 4 kWp 159 kWh, range 122–196DecDecember: 4 kWp 104 kWh, range 69–138

kWh per month

A typical day in June

The sunniest month in Utrecht. 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 90 124 158
February 150 216 281
March 275 359 444
April 372 469 566
May 415 534 653
June 442 536 629
July 408 510 611
August 411 500 589
September 337 415 493
October 192 251 309
November 122 159 196
December 69 104 138
Year 3,476 4,198 4,920

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 Utrecht?

From November to February the system produces about 602 kWh, which is 14% of the year. The weakest month (December) gives roughly 104 kWh.

Is an east-west roof worth it in Utrecht?

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 Utrecht

Ground mount or roof in Utrecht?

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 Utrecht

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