Metered, not modelled
Solar output in Luton
749–875 kWh per kWp a year
the middle half of 60 real Luton systems, measured over 2024
- Systems measured 60
- Median 836
- Best 10% of roofs 906
- Rank of 49 areas 6th
- Typical system size 3.1 kWp
A typical 4 kWp system here made roughly 3,000 to 3,500 units of electricity last year.
Not a forecast. 60 solar systems around Luton were metered through 2024, and the middle half made 749 to 875 kWh for every kWp of panels.
A good roof does better still: the top tenth here reached around 906 kWh per kWp, against a British median of 766.
That puts Luton 6th of the 49 postcode areas we can measure.
The local roof stock is unusually well pointed: 98% of these systems face south, south-east or south-west, against 86% nationally. Some of the figure above is orientation rather than weather.
At the other end, the quietest tenth of systems here made about 701 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 Luton 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.
Luton: the middle half of 60 systems made 749–875 kWh per kWp.
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Areas near Luton
Neighbouring postcode areas we can also measure.
How Luton compares
Looking for someone to fit them? MCS-certified solar installers in Luton 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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