How much will solar panels produce in Kilkenny?

A 4 kWp system facing south at 35° tilt in Kilkenny produces about 3,921 kWh a year. In a weak year that is 3,276 kWh, in a good one 4,565 kWh — 980 kWh per kWp.

That’s about 93% of a typical home’s yearly use (4,200 kWh).

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Based on 2014–2023 satellite weather data

Production by month

0200400600800JanJanuary: 4 kWp 130 kWh, range 103–156FebFebruary: 4 kWp 203 kWh, range 158–248MarMarch: 4 kWp 319 kWh, range 248–391AprApril: 4 kWp 411 kWh, range 309–512MayMay: 4 kWp 499 kWh, range 397–601JunJune: 4 kWp 486 kWh, range 385–588JulJuly: 4 kWp 460 kWh, range 373–548AugAugust: 4 kWp 449 kWh, range 370–527SepSeptember: 4 kWp 360 kWh, range 287–433OctOctober: 4 kWp 241 kWh, range 195–288NovNovember: 4 kWp 152 kWh, range 114–190DecDecember: 4 kWp 109 kWh, range 81–136

kWh per month

A typical day in May

The sunniest month in Kilkenny. Output peaks around 12:00 solar time, at about 1.9 kWh in the best hour.

0:006:0012:0018:0023:00 1.9 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 103 130 156
February 158 203 248
March 248 319 391
April 309 411 512
May 397 499 601
June 385 486 588
July 373 460 548
August 370 449 527
September 287 360 433
October 195 241 288
November 114 152 190
December 81 109 136
Year 3,276 3,921 4,565

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 Kilkenny?

From November to February the system produces about 593 kWh, which is 16% of the year. The weakest month (December) gives roughly 109 kWh.

Is an east-west roof worth it in Kilkenny?

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 Kilkenny

Ground mount or roof in Kilkenny?

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 Kilkenny

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