How much will solar panels produce in Warszawa?

A 6 kWp system facing south at 35° tilt in Warszawa produces about 6,434 kWh a year. In a weak year that is 5,353 kWh, in a good one 7,516 kWh — 1,072 kWh per kWp.

That’s about 257% of a typical home’s yearly use (2,500 kWh).

Calculate for my roof

Based on 2014–2023 satellite weather data

Production by month

05001,0001,500JanJanuary: 6 kWp 160 kWh, range 120–200FebFebruary: 6 kWp 293 kWh, range 218–367MarMarch: 6 kWp 482 kWh, range 356–608AprApril: 6 kWp 699 kWh, range 514–885MayMay: 6 kWp 815 kWh, range 635–996JunJune: 6 kWp 871 kWh, range 700–1,042JulJuly: 6 kWp 840 kWh, range 699–980AugAugust: 6 kWp 824 kWh, range 672–976SepSeptember: 6 kWp 656 kWh, range 509–802OctOctober: 6 kWp 449 kWh, range 316–581NovNovember: 6 kWp 180 kWh, range 138–221DecDecember: 6 kWp 115 kWh, range 76–153

kWh per month

A typical day in June

The sunniest month in Warszawa. Output peaks around 10:00 solar time, at about 3.4 kWh in the best hour.

0:006:0012:0018:0023:00 3.4 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 120 160 200
February 218 293 367
March 356 482 608
April 514 699 885
May 635 815 996
June 700 871 1,042
July 699 840 980
August 672 824 976
September 509 656 802
October 316 449 581
November 138 180 221
December 76 115 153
Year 5,353 6,434 7,516

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 Warszawa?

From November to February the system produces about 747 kWh, which is 12% of the year. The weakest month (December) gives roughly 115 kWh.

Is an east-west roof worth it in Warszawa?

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 Warszawa

Ground mount or roof in Warszawa?

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 Warszawa

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