How much will solar panels produce in Gisborne?

A 5 kWp system facing north at 35° tilt in Gisborne produces about 7,598 kWh a year. In a weak year that is 6,316 kWh, in a good one 8,879 kWh — 1,520 kWh per kWp.

That’s about 109% of a typical home’s yearly use (7,000 kWh).

Calculate for my roof

Based on 2014–2023 satellite weather data

Production by month

05001,0001,500JanJanuary: 5 kWp 841 kWh, range 678–1,005FebFebruary: 5 kWp 680 kWh, range 555–804MarMarch: 5 kWp 662 kWh, range 524–800AprApril: 5 kWp 581 kWh, range 467–696MayMay: 5 kWp 506 kWh, range 407–605JunJune: 5 kWp 404 kWh, range 330–478JulJuly: 5 kWp 467 kWh, range 373–561AugAugust: 5 kWp 555 kWh, range 451–659SepSeptember: 5 kWp 635 kWh, range 511–758OctOctober: 5 kWp 765 kWh, range 623–906NovNovember: 5 kWp 748 kWh, range 594–901DecDecember: 5 kWp 781 kWh, range 638–925

kWh per month

A typical day in January

The sunniest month in Gisborne. Output peaks around 11:00 solar time, at about 3.3 kWh in the best hour.

0:006:0012:0018:0023:00 3.3 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 678 841 1,005
February 555 680 804
March 524 662 800
April 467 581 696
May 407 506 605
June 330 404 478
July 373 467 561
August 451 555 659
September 511 635 758
October 623 765 906
November 594 748 901
December 638 781 925
Year 6,316 7,598 8,879

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 Gisborne?

From May to August the system produces about 1,931 kWh, which is 25% of the year. The weakest month (June) gives roughly 404 kWh.

Is an east-west roof worth it in Gisborne?

An east-west system typically produces 10–25% less per kWp than one facing north, but spreads production more evenly through the day. The exact difference depends on tilt and shading.

Compare an east-west roof for Gisborne

Ground mount or roof in Gisborne?

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 Gisborne

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 New Zealand

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