How much will solar panels produce in Goiânia?

A 5 kWp system facing north at 35° tilt in Goiânia produces about 8,318 kWh a year. In a weak year that is 6,982 kWh, in a good one 9,655 kWh — 1,664 kWh per kWp.

That’s about 416% of a typical home’s yearly use (2,000 kWh).

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Based on 2014–2023 satellite weather data

Production by month

05001,0001,500JanJanuary: 5 kWp 569 kWh, range 460–679FebFebruary: 5 kWp 550 kWh, range 456–644MarMarch: 5 kWp 666 kWh, range 548–784AprApril: 5 kWp 704 kWh, range 568–840MayMay: 5 kWp 802 kWh, range 670–934JunJune: 5 kWp 795 kWh, range 665–926JulJuly: 5 kWp 883 kWh, range 731–1,036AugAugust: 5 kWp 857 kWh, range 712–1,002SepSeptember: 5 kWp 752 kWh, range 628–876OctOctober: 5 kWp 657 kWh, range 539–776NovNovember: 5 kWp 542 kWh, range 432–652DecDecember: 5 kWp 567 kWh, range 465–669

kWh per month

A typical day in July

The sunniest month in Goiânia. Output peaks around 11:00 solar time, at about 2.6 kWh in the best hour.

0:006:0012:0018:0023:00 2.6 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 460 569 679
February 456 550 644
March 548 666 784
April 568 704 840
May 670 802 934
June 665 795 926
July 731 883 1,036
August 712 857 1,002
September 628 752 876
October 539 657 776
November 432 542 652
December 465 567 669
Year 6,982 8,318 9,655

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 Goiânia?

From May to August the system produces about 3,337 kWh, which is 40% of the year. The weakest month (November) gives roughly 542 kWh.

Is an east-west roof worth it in Goiânia?

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 Goiânia

Ground mount or roof in Goiânia?

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 Goiânia

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