How much will solar panels produce in Erfurt?

A 8 kWp system facing south at 35° tilt in Erfurt produces about 8,588 kWh a year. In a weak year that is 7,065 kWh, in a good one 10,110 kWh — 1,074 kWh per kWp.

That’s about 245% of a typical home’s yearly use (3,500 kWh).

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Based on 2014–2023 satellite weather data

Production by month

05001,0001,500JanJanuary: 8 kWp 244 kWh, range 175–313FebFebruary: 8 kWp 452 kWh, range 353–552MarMarch: 8 kWp 710 kWh, range 527–893AprApril: 8 kWp 907 kWh, range 707–1,108MayMay: 8 kWp 1,072 kWh, range 859–1,285JunJune: 8 kWp 1,077 kWh, range 848–1,307JulJuly: 8 kWp 1,079 kWh, range 879–1,280AugAugust: 8 kWp 1,060 kWh, range 876–1,244SepSeptember: 8 kWp 824 kWh, range 624–1,025OctOctober: 8 kWp 544 kWh, range 400–688NovNovember: 8 kWp 356 kWh, range 253–460DecDecember: 8 kWp 215 kWh, range 137–293

kWh per month

A typical day in July

The sunniest month in Erfurt. Output peaks around 11:00 solar time, at about 4.4 kWh in the best hour.

0:006:0012:0018:0023:00 4.4 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 175 244 313
February 353 452 552
March 527 710 893
April 707 907 1,108
May 859 1,072 1,285
June 848 1,077 1,307
July 879 1,079 1,280
August 876 1,060 1,244
September 624 824 1,025
October 400 544 688
November 253 356 460
December 137 215 293
Year 7,065 8,588 10,110

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 Erfurt?

From November to February the system produces about 1,268 kWh, which is 15% of the year. The weakest month (December) gives roughly 215 kWh.

Is an east-west roof worth it in Erfurt?

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 Erfurt

Ground mount or roof in Erfurt?

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 Erfurt

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