How much will solar panels produce in Waterford?

A 4 kWp system facing south at 35° tilt in Waterford produces about 4,235 kWh a year. In a weak year that is 3,535 kWh, in a good one 4,935 kWh — 1,059 kWh per kWp.

That’s about 101% 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 148 kWh, range 121–175FebFebruary: 4 kWp 220 kWh, range 171–268MarMarch: 4 kWp 343 kWh, range 264–422AprApril: 4 kWp 458 kWh, range 349–567MayMay: 4 kWp 558 kWh, range 454–662JunJune: 4 kWp 545 kWh, range 447–642JulJuly: 4 kWp 519 kWh, range 416–622AugAugust: 4 kWp 486 kWh, range 398–575SepSeptember: 4 kWp 377 kWh, range 297–456OctOctober: 4 kWp 255 kWh, range 200–310NovNovember: 4 kWp 174 kWh, range 129–219DecDecember: 4 kWp 112 kWh, range 78–145

kWh per month

A typical day in May

The sunniest month in Waterford. Output peaks around 12:00 solar time, at about 2.2 kWh in the best hour.

0:006:0012:0018:0023:00 2.2 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 121 148 175
February 171 220 268
March 264 343 422
April 349 458 567
May 454 558 662
June 447 545 642
July 416 519 622
August 398 486 575
September 297 377 456
October 200 255 310
November 129 174 219
December 78 112 145
Year 3,535 4,235 4,935

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 Waterford?

From November to February the system produces about 653 kWh, which is 16% of the year. The weakest month (December) gives roughly 112 kWh.

Is an east-west roof worth it in Waterford?

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 Waterford

Ground mount or roof in Waterford?

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 Waterford

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