Metered, not modelled
Solar output in Bristol
725–848 kWh per kWp a year
the middle half of 468 real Bristol systems, measured over 2024
- Systems measured 468
- Median 789
- Best 10% of roofs 909
- Rank of 49 areas 22nd
- Typical system size 2.6 kWp
A typical 4 kWp system here made roughly 2,900 to 3,390 units of electricity last year.
Not a forecast. 468 solar systems around Bristol were metered through 2024, and the middle half made 725 to 848 kWh for every kWp of panels.
A good roof does better still: the top tenth here reached around 909 kWh per kWp, against a British median of 766.
The local roof stock is unusually well pointed: 100% of these systems face south, south-east or south-west, against 86% nationally. Some of the figure above is orientation rather than weather.
That places Bristol 22nd of 49, ahead of 27 of the areas we can measure.
At the other end, the quietest tenth of systems here made about 634 kWh per kWp — usually shade, a poor direction, or both.
What none of it tells you is what your own roof would do. These systems point in every direction and some have been up for fifteen years.
The spread behind that number
Every Bristol system, grouped by what it made, against Britain as a whole. The two shapes overlap heavily, which is the honest headline: your postcode nudges the result, your roof decides it.
Bristol: the middle half of 468 systems made 725–848 kWh per kWp.
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Areas near Bristol
Neighbouring postcode areas we can also measure.
How Bristol compares
Looking for someone to fit them? MCS-certified solar installers in Bristol are listed in the Solarable directory.
Output figures from openclimatefix/uk_pv (Hugging Face, CC-BY-4.0), collected by Sheffield Solar. The British median is 766 kWh per kWp. How we measure.
Related
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What a kWp really generates in Britain, modelled and metered.
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Annual benefit and payback in honest UK ranges.
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How we measure
Our sources, our cross-checks, and what we refuse to publish.
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How much sun does my roof get?
How sunlight falls on a UK roof, month by month.
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