How much will solar panels produce in Vigo?

A 5 kWp system facing south at 35° tilt in Vigo produces about 6,915 kWh a year. In a weak year that is 5,777 kWh, in a good one 8,053 kWh — 1,383 kWh per kWp.

That’s about 210% of a typical home’s yearly use (3,300 kWh).

Calculate for my roof

Based on 2014–2023 satellite weather data

Production by month

02505007501,000JanJanuary: 5 kWp 390 kWh, range 267–512FebFebruary: 5 kWp 416 kWh, range 298–533MarMarch: 5 kWp 566 kWh, range 451–681AprApril: 5 kWp 621 kWh, range 486–757MayMay: 5 kWp 766 kWh, range 628–905JunJune: 5 kWp 707 kWh, range 576–838JulJuly: 5 kWp 813 kWh, range 649–977AugAugust: 5 kWp 813 kWh, range 664–962SepSeptember: 5 kWp 672 kWh, range 551–793OctOctober: 5 kWp 475 kWh, range 342–608NovNovember: 5 kWp 337 kWh, range 218–456DecDecember: 5 kWp 316 kWh, range 246–386

kWh per month

A typical day in August

The sunniest month in Vigo. Output peaks around 11:00 solar time, at about 3.0 kWh in the best hour.

0:006:0012:0018:0023:00 3.0 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 267 390 512
February 298 416 533
March 451 566 681
April 486 621 757
May 628 766 905
June 576 707 838
July 649 813 977
August 664 813 962
September 551 672 793
October 342 475 608
November 218 337 456
December 246 316 386
Year 5,777 6,915 8,053

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 Vigo?

From November to February the system produces about 1,458 kWh, which is 21% of the year. The weakest month (December) gives roughly 316 kWh.

Is an east-west roof worth it in Vigo?

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

Compare an east-west roof for Vigo

Ground mount or roof in Vigo?

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 Vigo

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