How much will solar panels produce in Porto Velho?

A 5 kWp system facing north at 35° tilt in Porto Velho produces about 6,900 kWh a year. In a weak year that is 5,792 kWh, in a good one 8,009 kWh — 1,380 kWh per kWp.

That’s about 345% 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 468 kWh, range 391–546FebFebruary: 5 kWp 425 kWh, range 353–496MarMarch: 5 kWp 539 kWh, range 449–630AprApril: 5 kWp 593 kWh, range 496–690MayMay: 5 kWp 653 kWh, range 541–766JunJune: 5 kWp 698 kWh, range 579–818JulJuly: 5 kWp 788 kWh, range 654–921AugAugust: 5 kWp 656 kWh, range 547–765SepSeptember: 5 kWp 616 kWh, range 513–719OctOctober: 5 kWp 561 kWh, range 468–653NovNovember: 5 kWp 471 kWh, range 389–552DecDecember: 5 kWp 441 kWh, range 369–513

kWh per month

A typical day in July

The sunniest month in Porto Velho. 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 391 468 546
February 353 425 496
March 449 539 630
April 496 593 690
May 541 653 766
June 579 698 818
July 654 788 921
August 547 656 765
September 513 616 719
October 468 561 653
November 389 471 552
December 369 441 513
Year 5,792 6,900 8,009

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 Velho?

From May to August the system produces about 2,795 kWh, which is 40% of the year. The weakest month (February) gives roughly 425 kWh.

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

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 Velho

Ground mount or roof in Porto Velho?

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 Velho

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 Brazil

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