Metered, not modelled
Solar output in Exeter
765–923 kWh per kWp a year
the middle half of 211 real Exeter systems, measured over 2024
- Systems measured 211
- Median 852
- Best 10% of roofs 973
- Rank of 49 areas 5th
- Typical system size 3.1 kWp
A typical 4 kWp system here made roughly 3,060 to 3,690 units of electricity last year.
Not a forecast. 211 solar systems around Exeter were metered through 2024, and the middle half made 765 to 923 kWh for every kWp of panels.
The best tenth reached about 973 kWh per kWp — some 27% clear of the British median of 766, and among the strongest roofs we can measure anywhere.
That puts Exeter 5th of the 49 postcode areas we can measure.
At the other end, the quietest tenth of systems here made about 661 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 Exeter 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.
Exeter: the middle half of 211 systems made 765–923 kWh per kWp.
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Areas near Exeter
Neighbouring postcode areas we can also measure.
How Exeter compares
Looking for someone to fit them? MCS-certified solar installers in Exeter 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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Solar savings calculator
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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