How much will solar panels produce in Zvolen?

A 6 kWp system facing south at 35° tilt in Zvolen produces about 7,054 kWh a year. In a weak year that is 5,861 kWh, in a good one 8,247 kWh — 1,176 kWh per kWp.

That’s about 252% of a typical home’s yearly use (2,800 kWh).

Calculate for my roof

Based on 2014–2023 satellite weather data

Production by month

05001,0001,500JanJanuary: 6 kWp 258 kWh, range 169–347FebFebruary: 6 kWp 412 kWh, range 302–522MarMarch: 6 kWp 660 kWh, range 509–811AprApril: 6 kWp 731 kWh, range 585–877MayMay: 6 kWp 822 kWh, range 665–980JunJune: 6 kWp 871 kWh, range 678–1,064JulJuly: 6 kWp 891 kWh, range 740–1,041AugAugust: 6 kWp 844 kWh, range 699–988SepSeptember: 6 kWp 689 kWh, range 547–831OctOctober: 6 kWp 473 kWh, range 337–609NovNovember: 6 kWp 265 kWh, range 190–341DecDecember: 6 kWp 185 kWh, range 120–250

kWh per month

A typical day in July

The sunniest month in Zvolen. Output peaks around 10:00 solar time, at about 3.6 kWh in the best hour.

0:006:0012:0018:0023:00 3.6 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 169 258 347
February 302 412 522
March 509 660 811
April 585 731 877
May 665 822 980
June 678 871 1,064
July 740 891 1,041
August 699 844 988
September 547 689 831
October 337 473 609
November 190 265 341
December 120 185 250
Year 5,861 7,054 8,247

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 Zvolen?

From November to February the system produces about 1,120 kWh, which is 16% of the year. The weakest month (December) gives roughly 185 kWh.

Is an east-west roof worth it in Zvolen?

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 Zvolen

Ground mount or roof in Zvolen?

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 Zvolen

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