How much will solar panels produce in Trnava?

A 6 kWp system facing south at 35° tilt in Trnava produces about 7,499 kWh a year. In a weak year that is 6,286 kWh, in a good one 8,711 kWh — 1,250 kWh per kWp.

That’s about 268% 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 245 kWh, range 177–314FebFebruary: 6 kWp 353 kWh, range 248–458MarMarch: 6 kWp 695 kWh, range 553–837AprApril: 6 kWp 790 kWh, range 631–949MayMay: 6 kWp 885 kWh, range 711–1,059JunJune: 6 kWp 951 kWh, range 773–1,128JulJuly: 6 kWp 941 kWh, range 787–1,095AugAugust: 6 kWp 893 kWh, range 726–1,060SepSeptember: 6 kWp 742 kWh, range 577–907OctOctober: 6 kWp 518 kWh, range 357–680NovNovember: 6 kWp 307 kWh, range 214–400DecDecember: 6 kWp 192 kWh, range 131–253

kWh per month

A typical day in June

The sunniest month in Trnava. Output peaks around 11:00 solar time, at about 3.9 kWh in the best hour.

0:006:0012:0018:0023:00 3.9 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 177 245 314
February 248 353 458
March 553 695 837
April 631 790 949
May 711 885 1,059
June 773 951 1,128
July 787 941 1,095
August 726 893 1,060
September 577 742 907
October 357 518 680
November 214 307 400
December 131 192 253
Year 6,286 7,499 8,711

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 Trnava?

From November to February the system produces about 1,097 kWh, which is 15% of the year. The weakest month (December) gives roughly 192 kWh.

Is an east-west roof worth it in Trnava?

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 Trnava

Ground mount or roof in Trnava?

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 Trnava

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

All cities in Slovakia

Climate data: Photovoltaic Geographical Information System (PVGIS) — European Commission, Joint Research Centre