How much will solar panels produce in Piešťany?

A 6 kWp system facing south at 35° tilt in Piešťany produces about 7,197 kWh a year. In a weak year that is 6,027 kWh, in a good one 8,368 kWh — 1,200 kWh per kWp.

That’s about 257% of a typical home’s yearly use (2,800 kWh).

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Based on 2014–2023 satellite weather data

Production by month

05001,0001,500JanJanuary: 6 kWp 227 kWh, range 163–291FebFebruary: 6 kWp 414 kWh, range 320–508MarMarch: 6 kWp 673 kWh, range 536–810AprApril: 6 kWp 738 kWh, range 583–893MayMay: 6 kWp 860 kWh, range 694–1,025JunJune: 6 kWp 933 kWh, range 756–1,111JulJuly: 6 kWp 915 kWh, range 762–1,067AugAugust: 6 kWp 858 kWh, range 702–1,014SepSeptember: 6 kWp 697 kWh, range 538–855OctOctober: 6 kWp 496 kWh, range 350–642NovNovember: 6 kWp 276 kWh, range 199–353DecDecember: 6 kWp 197 kWh, range 144–250

kWh per month

A typical day in June

The sunniest month in Piešťany. Output peaks around 11:00 solar time, at about 3.7 kWh in the best hour.

0:006:0012:0018:0023:00 3.7 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 163 227 291
February 320 414 508
March 536 673 810
April 583 738 893
May 694 860 1,025
June 756 933 1,111
July 762 915 1,067
August 702 858 1,014
September 538 697 855
October 350 496 642
November 199 276 353
December 144 197 250
Year 6,027 7,197 8,368

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 Piešťany?

From November to February the system produces about 1,113 kWh, which is 15% of the year. The weakest month (December) gives roughly 197 kWh.

Is an east-west roof worth it in Piešťany?

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 Piešťany

Ground mount or roof in Piešťany?

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 Piešťany

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