How much will solar panels produce in Covilhã?

A 5 kWp system facing south at 35° tilt in Covilhã produces about 7,983 kWh a year. In a weak year that is 6,681 kWh, in a good one 9,284 kWh — 1,597 kWh per kWp.

That’s about 266% of a typical home’s yearly use (3,000 kWh).

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Based on 2014–2023 satellite weather data

Production by month

05001,0001,500JanJanuary: 5 kWp 536 kWh, range 413–658FebFebruary: 5 kWp 555 kWh, range 416–694MarMarch: 5 kWp 698 kWh, range 546–850AprApril: 5 kWp 688 kWh, range 522–855MayMay: 5 kWp 812 kWh, range 663–962JunJune: 5 kWp 822 kWh, range 685–960JulJuly: 5 kWp 915 kWh, range 767–1,062AugAugust: 5 kWp 916 kWh, range 767–1,066SepSeptember: 5 kWp 761 kWh, range 603–919OctOctober: 5 kWp 597 kWh, range 462–732NovNovember: 5 kWp 430 kWh, range 299–562DecDecember: 5 kWp 430 kWh, range 340–519

kWh per month

A typical day in August

The sunniest month in Covilhã. Output peaks around 11:00 solar time, at about 3.4 kWh in the best hour.

0:006:0012:0018:0023:00 3.4 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 413 536 658
February 416 555 694
March 546 698 850
April 522 688 855
May 663 812 962
June 685 822 960
July 767 915 1,062
August 767 916 1,066
September 603 761 919
October 462 597 732
November 299 430 562
December 340 430 519
Year 6,681 7,983 9,284

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 Covilhã?

From November to February the system produces about 1,950 kWh, which is 24% of the year. The weakest month (December) gives roughly 430 kWh.

Is an east-west roof worth it in Covilhã?

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 Covilhã

Ground mount or roof in Covilhã?

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 Covilhã

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