Metered, not modelled
Solar output in Plymouth
607–905 kWh per kWp a year
the middle half of 74 real Plymouth systems, measured over 2024
- Systems measured 74
- Median 804
- Best 10% of roofs 958
- Rank of 49 areas 15th
- Typical system size 3.2 kWp
A typical 4 kWp system here made roughly 2,430 to 3,620 units of electricity last year.
Not a forecast. 74 solar systems around Plymouth were metered through 2024, and the middle half made 607 to 905 kWh for every kWp of panels.
The best tenth reached about 958 kWh per kWp — some 25% clear of the British median of 766, and among the strongest roofs we can measure anywhere.
Roofs here vary more than most: 298 kWh per kWp separates the lower quarter from the upper, against 161 nationally. In a place like this the roof matters more than the postcode.
That places Plymouth 15th of 49, ahead of 34 of the areas we can measure.
At the other end, the quietest tenth of systems here made about 378 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 Plymouth 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.
Plymouth: the middle half of 74 systems made 607–905 kWh per kWp.
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Areas near Plymouth
Neighbouring postcode areas we can also measure.
How Plymouth compares
Looking for someone to fit them? MCS-certified solar installers in Plymouth 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.
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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
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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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