How much will solar panels produce in Birmingham?

A 4 kWp system facing south at 35° tilt in Birmingham produces about 3,945 kWh a year. In a weak year that is 3,287 kWh, in a good one 4,602 kWh — 986 kWh per kWp.

That’s about 146% of a typical home’s yearly use (2,700 kWh).

Calculate for my roof

Based on 2014–2023 satellite weather data

Production by month

0200400600JanJanuary: 4 kWp 134 kWh, range 102–166FebFebruary: 4 kWp 218 kWh, range 176–261MarMarch: 4 kWp 328 kWh, range 249–408AprApril: 4 kWp 437 kWh, range 337–536MayMay: 4 kWp 473 kWh, range 368–578JunJune: 4 kWp 483 kWh, range 378–589JulJuly: 4 kWp 474 kWh, range 371–577AugAugust: 4 kWp 451 kWh, range 366–535SepSeptember: 4 kWp 368 kWh, range 296–439OctOctober: 4 kWp 242 kWh, range 190–295NovNovember: 4 kWp 152 kWh, range 115–189DecDecember: 4 kWp 118 kWh, range 80–155

kWh per month

A typical day in June

The sunniest month in Birmingham. Output peaks around 11:00 solar time, at about 1.9 kWh in the best hour.

0:006:0012:0018:0023:00 1.9 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 102 134 166
February 176 218 261
March 249 328 408
April 337 437 536
May 368 473 578
June 378 483 589
July 371 474 577
August 366 451 535
September 296 368 439
October 190 242 295
November 115 152 189
December 80 118 155
Year 3,287 3,945 4,602

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 Birmingham?

From November to February the system produces about 622 kWh, which is 16% of the year. The weakest month (December) gives roughly 118 kWh.

Is an east-west roof worth it in Birmingham?

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 Birmingham

Ground mount or roof in Birmingham?

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 Birmingham

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