How much will solar panels produce in Porto Alegre?

A 5 kWp system facing north at 35° tilt in Porto Alegre produces about 6,956 kWh a year. In a weak year that is 5,810 kWh, in a good one 8,103 kWh — 1,391 kWh per kWp.

That’s about 348% of a typical home’s yearly use (2,000 kWh).

Calculate for my roof

Based on 2014–2023 satellite weather data

Production by month

02505007501,000JanJanuary: 5 kWp 707 kWh, range 588–826FebFebruary: 5 kWp 660 kWh, range 546–774MarMarch: 5 kWp 668 kWh, range 551–784AprApril: 5 kWp 607 kWh, range 487–727MayMay: 5 kWp 488 kWh, range 370–605JunJune: 5 kWp 425 kWh, range 341–510JulJuly: 5 kWp 491 kWh, range 348–633AugAugust: 5 kWp 538 kWh, range 441–634SepSeptember: 5 kWp 486 kWh, range 386–586OctOctober: 5 kWp 602 kWh, range 486–719NovNovember: 5 kWp 673 kWh, range 539–807DecDecember: 5 kWp 712 kWh, range 578–847

kWh per month

A typical day in December

The sunniest month in Porto Alegre. Output peaks around 12:00 solar time, at about 3.1 kWh in the best hour.

0:006:0012:0018:0023:00 3.1 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 588 707 826
February 546 660 774
March 551 668 784
April 487 607 727
May 370 488 605
June 341 425 510
July 348 491 633
August 441 538 634
September 386 486 586
October 486 602 719
November 539 673 807
December 578 712 847
Year 5,810 6,956 8,103

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 Porto Alegre?

From May to August the system produces about 1,942 kWh, which is 28% of the year. The weakest month (June) gives roughly 425 kWh.

Is an east-west roof worth it in Porto Alegre?

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 Porto Alegre

Ground mount or roof in Porto Alegre?

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 Porto Alegre

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