How much will solar panels produce in Mullingar?

A 4 kWp system facing south at 35° tilt in Mullingar produces about 3,709 kWh a year. In a weak year that is 3,097 kWh, in a good one 4,321 kWh — 927 kWh per kWp.

That’s about 88% of a typical home’s yearly use (4,200 kWh).

Calculate for my roof

Based on 2014–2023 satellite weather data

Production by month

0200400600JanJanuary: 4 kWp 127 kWh, range 103–151FebFebruary: 4 kWp 190 kWh, range 145–235MarMarch: 4 kWp 309 kWh, range 239–379AprApril: 4 kWp 417 kWh, range 315–519MayMay: 4 kWp 502 kWh, range 403–600JunJune: 4 kWp 465 kWh, range 363–566JulJuly: 4 kWp 454 kWh, range 378–530AugAugust: 4 kWp 432 kWh, range 352–512SepSeptember: 4 kWp 335 kWh, range 266–403OctOctober: 4 kWp 244 kWh, range 196–292NovNovember: 4 kWp 152 kWh, range 116–189DecDecember: 4 kWp 95 kWh, range 68–123

kWh per month

A typical day in May

The sunniest month in Mullingar. Output peaks around 11:00 solar time, at about 1.8 kWh in the best hour.

0:006:0012:0018:0023:00 1.8 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 103 127 151
February 145 190 235
March 239 309 379
April 315 417 519
May 403 502 600
June 363 465 566
July 378 454 530
August 352 432 512
September 266 335 403
October 196 244 292
November 116 152 189
December 68 95 123
Year 3,097 3,709 4,321

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 Mullingar?

From November to February the system produces about 564 kWh, which is 15% of the year. The weakest month (December) gives roughly 95 kWh.

Is an east-west roof worth it in Mullingar?

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 Mullingar

Ground mount or roof in Mullingar?

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 Mullingar

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 Ireland

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