How much will solar panels produce in Brighton?

A 4 kWp system facing south at 35° tilt in Brighton produces about 4,669 kWh a year. In a weak year that is 3,906 kWh, in a good one 5,433 kWh — 1,167 kWh per kWp.

That’s about 173% of a typical home’s yearly use (2,700 kWh).

Calculate for my roof

Based on 2014–2023 satellite weather data

Production by month

0200400600800JanJanuary: 4 kWp 168 kWh, range 138–198FebFebruary: 4 kWp 238 kWh, range 181–296MarMarch: 4 kWp 405 kWh, range 311–498AprApril: 4 kWp 525 kWh, range 427–623MayMay: 4 kWp 578 kWh, range 469–687JunJune: 4 kWp 614 kWh, range 493–734JulJuly: 4 kWp 598 kWh, range 487–708AugAugust: 4 kWp 552 kWh, range 451–653SepSeptember: 4 kWp 449 kWh, range 370–527OctOctober: 4 kWp 285 kWh, range 227–343NovNovember: 4 kWp 178 kWh, range 130–226DecDecember: 4 kWp 131 kWh, range 91–171

kWh per month

A typical day in June

The sunniest month in Brighton. Output peaks around 12:00 solar time, at about 2.4 kWh in the best hour.

0:006:0012:0018:0023:00 2.4 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 138 168 198
February 181 238 296
March 311 405 498
April 427 525 623
May 469 578 687
June 493 614 734
July 487 598 708
August 451 552 653
September 370 449 527
October 227 285 343
November 130 178 226
December 91 131 171
Year 3,906 4,669 5,433

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 Brighton?

From November to February the system produces about 715 kWh, which is 15% of the year. The weakest month (December) gives roughly 131 kWh.

Is an east-west roof worth it in Brighton?

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 Brighton

Ground mount or roof in Brighton?

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 Brighton

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 United Kingdom

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