Metered, not modelled
Leeds vs Newcastle upon Tyne
Leeds and Newcastle upon Tyne roofs made much the same last year.
747 against 746 kWh per kWp at the median, from 434 and 70 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 Newcastle upon Tyne roof beats a poor Leeds one comfortably. Location moves the odds; it does not decide the outcome.
Leeds: the middle half of 434 systems made 677–802 kWh per kWp. Newcastle upon Tyne: the middle half of 70 systems made 698–829 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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