How much will solar panels produce in Bern?

A 8 kWp system facing south at 35° tilt in Bern produces about 9,890 kWh a year. In a weak year that is 8,233 kWh, in a good one 11,546 kWh — 1,236 kWh per kWp.

That’s about 220% 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 404 kWh, range 240–568FebFebruary: 8 kWp 586 kWh, range 396–775MarMarch: 8 kWp 916 kWh, range 725–1,108AprApril: 8 kWp 1,072 kWh, range 836–1,308MayMay: 8 kWp 1,022 kWh, range 829–1,215JunJune: 8 kWp 1,181 kWh, range 962–1,400JulJuly: 8 kWp 1,212 kWh, range 960–1,465AugAugust: 8 kWp 1,109 kWh, range 920–1,299SepSeptember: 8 kWp 1,000 kWh, range 805–1,194OctOctober: 8 kWp 761 kWh, range 594–929NovNovember: 8 kWp 419 kWh, range 323–515DecDecember: 8 kWp 327 kWh, range 162–492

kWh per month

A typical day in July

The sunniest month in Bern. Output peaks around 11:00 solar time, at about 4.8 kWh in the best hour.

0:006:0012:0018:0023:00 4.8 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 240 404 568
February 396 586 775
March 725 916 1,108
April 836 1,072 1,308
May 829 1,022 1,215
June 962 1,181 1,400
July 960 1,212 1,465
August 920 1,109 1,299
September 805 1,000 1,194
October 594 761 929
November 323 419 515
December 162 327 492
Year 8,233 9,890 11,546

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 Bern?

From November to February the system produces about 1,735 kWh, which is 17% of the year. The weakest month (December) gives roughly 327 kWh.

Is an east-west roof worth it in Bern?

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 Bern

Ground mount or roof in Bern?

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 Bern

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