How much will solar panels produce in Bunbury?

A 6.6 kWp system facing north at 35° tilt in Bunbury produces about 10,890 kWh a year. In a weak year that is 9,096 kWh, in a good one 12,683 kWh — 1,650 kWh per kWp.

That’s about 198% of a typical home’s yearly use (5,500 kWh).

Calculate for my roof

Based on 2014–2023 satellite weather data

Production by month

05001,0001,500JanJanuary: 6.6 kWp 1,196 kWh, range 1,000–1,393FebFebruary: 6.6 kWp 1,049 kWh, range 865–1,234MarMarch: 6.6 kWp 1,025 kWh, range 854–1,196AprApril: 6.6 kWp 866 kWh, range 701–1,031MayMay: 6.6 kWp 738 kWh, range 571–905JunJune: 6.6 kWp 610 kWh, range 505–715JulJuly: 6.6 kWp 617 kWh, range 510–725AugAugust: 6.6 kWp 760 kWh, range 623–897SepSeptember: 6.6 kWp 857 kWh, range 699–1,016OctOctober: 6.6 kWp 997 kWh, range 818–1,176NovNovember: 6.6 kWp 1,065 kWh, range 878–1,253DecDecember: 6.6 kWp 1,157 kWh, range 968–1,345

kWh per month

A typical day in January

The sunniest month in Bunbury. Output peaks around 12:00 solar time, at about 4.9 kWh in the best hour.

0:006:0012:0018:0023:00 4.9 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 1,000 1,196 1,393
February 865 1,049 1,234
March 854 1,025 1,196
April 701 866 1,031
May 571 738 905
June 505 610 715
July 510 617 725
August 623 760 897
September 699 857 1,016
October 818 997 1,176
November 878 1,065 1,253
December 968 1,157 1,345
Year 9,096 10,890 12,683

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 Bunbury?

From May to August the system produces about 2,725 kWh, which is 25% of the year. The weakest month (June) gives roughly 610 kWh.

Is an east-west roof worth it in Bunbury?

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 Bunbury

Ground mount or roof in Bunbury?

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 Bunbury

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