How much will solar panels produce in Karlovy Vary?

A 6 kWp system facing south at 35° tilt in Karlovy Vary produces about 6,266 kWh a year. In a weak year that is 5,200 kWh, in a good one 7,332 kWh — 1,044 kWh per kWp.

That’s about 209% of a typical home’s yearly use (3,000 kWh).

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Based on 2014–2023 satellite weather data

Production by month

02505007501,000JanJanuary: 6 kWp 158 kWh, range 125–191FebFebruary: 6 kWp 315 kWh, range 225–404MarMarch: 6 kWp 542 kWh, range 409–676AprApril: 6 kWp 669 kWh, range 509–830MayMay: 6 kWp 773 kWh, range 600–946JunJune: 6 kWp 797 kWh, range 636–959JulJuly: 6 kWp 826 kWh, range 685–968AugAugust: 6 kWp 754 kWh, range 612–895SepSeptember: 6 kWp 602 kWh, range 468–737OctOctober: 6 kWp 388 kWh, range 273–503NovNovember: 6 kWp 219 kWh, range 157–282DecDecember: 6 kWp 148 kWh, range 97–198

kWh per month

A typical day in July

The sunniest month in Karlovy Vary. Output peaks around 11:00 solar time, at about 3.1 kWh in the best hour.

0:006:0012:0018:0023:00 3.1 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 125 158 191
February 225 315 404
March 409 542 676
April 509 669 830
May 600 773 946
June 636 797 959
July 685 826 968
August 612 754 895
September 468 602 737
October 273 388 503
November 157 219 282
December 97 148 198
Year 5,200 6,266 7,332

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 Karlovy Vary?

From November to February the system produces about 840 kWh, which is 14% of the year. The weakest month (December) gives roughly 148 kWh.

Is an east-west roof worth it in Karlovy Vary?

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 Karlovy Vary

Ground mount or roof in Karlovy Vary?

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 Karlovy Vary

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