How much will solar panels produce in Basel?

A 8 kWp system facing south at 35° tilt in Basel produces about 9,553 kWh a year. In a weak year that is 7,939 kWh, in a good one 11,168 kWh — 1,194 kWh per kWp.

That’s about 212% of a typical home’s yearly use (4,500 kWh).

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Based on 2014–2023 satellite weather data

Production by month

05001,0001,500JanJanuary: 8 kWp 357 kWh, range 249–464FebFebruary: 8 kWp 563 kWh, range 422–703MarMarch: 8 kWp 876 kWh, range 655–1,097AprApril: 8 kWp 1,033 kWh, range 794–1,272MayMay: 8 kWp 989 kWh, range 805–1,172JunJune: 8 kWp 1,138 kWh, range 913–1,363JulJuly: 8 kWp 1,178 kWh, range 925–1,432AugAugust: 8 kWp 1,069 kWh, range 862–1,277SepSeptember: 8 kWp 947 kWh, range 754–1,140OctOctober: 8 kWp 699 kWh, range 520–878NovNovember: 8 kWp 397 kWh, range 271–522DecDecember: 8 kWp 303 kWh, range 132–474

kWh per month

A typical day in July

The sunniest month in Basel. Output peaks around 12:00 solar time, at about 4.5 kWh in the best hour.

0:006:0012:0018:0023:00 4.5 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 249 357 464
February 422 563 703
March 655 876 1,097
April 794 1,033 1,272
May 805 989 1,172
June 913 1,138 1,363
July 925 1,178 1,432
August 862 1,069 1,277
September 754 947 1,140
October 520 699 878
November 271 397 522
December 132 303 474
Year 7,939 9,553 11,168

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 Basel?

From November to February the system produces about 1,619 kWh, which is 17% of the year. The weakest month (December) gives roughly 303 kWh.

Is an east-west roof worth it in Basel?

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 Basel

Ground mount or roof in Basel?

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 Basel

Your roof is not an average roof

Set your own tilt, direction, shading and inverter limit and get a range for your address.

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