How much will solar panels produce in Thun?

A 8 kWp system facing south at 35° tilt in Thun produces about 9,492 kWh a year. In a weak year that is 7,928 kWh, in a good one 11,056 kWh — 1,187 kWh per kWp.

That’s about 211% of a typical home’s yearly use (4,500 kWh).

Calculate for my roof

Based on 2014–2023 satellite weather data

Production by month

05001,0001,500JanJanuary: 8 kWp 401 kWh, range 259–544FebFebruary: 8 kWp 604 kWh, range 426–782MarMarch: 8 kWp 834 kWh, range 651–1,018AprApril: 8 kWp 963 kWh, range 764–1,161MayMay: 8 kWp 929 kWh, range 750–1,108JunJune: 8 kWp 1,070 kWh, range 859–1,281JulJuly: 8 kWp 1,109 kWh, range 875–1,343AugAugust: 8 kWp 1,016 kWh, range 843–1,189SepSeptember: 8 kWp 911 kWh, range 739–1,083OctOctober: 8 kWp 732 kWh, range 570–893NovNovember: 8 kWp 453 kWh, range 321–585DecDecember: 8 kWp 343 kWh, range 186–500

kWh per month

A typical day in July

The sunniest month in Thun. Output peaks around 11:00 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 259 401 544
February 426 604 782
March 651 834 1,018
April 764 963 1,161
May 750 929 1,108
June 859 1,070 1,281
July 875 1,109 1,343
August 843 1,016 1,189
September 739 911 1,083
October 570 732 893
November 321 453 585
December 186 343 500
Year 7,928 9,492 11,056

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 Thun?

From November to February the system produces about 1,801 kWh, which is 19% of the year. The weakest month (December) gives roughly 343 kWh.

Is an east-west roof worth it in Thun?

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 Thun

Ground mount or roof in Thun?

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 Thun

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