Metered, not modelled
Leicester vs Nottingham
Leicester roofs made about 1% more than Nottingham roofs last year.
762 against 758 kWh per kWp at the median, from 211 and 228 real systems.
Where the two actually overlap
Both areas, grouped by what each system made. The medians differ, but the shapes sit largely on top of one another — a good Nottingham roof beats a poor Leicester one comfortably. Location moves the odds; it does not decide the outcome.
Leicester: the middle half of 211 systems made 682–819 kWh per kWp. Nottingham: the middle half of 228 systems made 683–816 kWh per kWp.
Both figures are what real systems metered last year, so the gap mixes sunlight with system age, roof direction and shading. It is the difference in what people actually got, not a difference in sunshine alone.
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Output figures from openclimatefix/uk_pv (Hugging Face, CC-BY-4.0), collected by Sheffield Solar. How we measure.
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