Metered, not modelled
Solar output in Blackburn
666–768 kWh per kWp a year
the middle half of 103 real Blackburn systems, measured over 2024
- Systems measured 103
- Median 735
- Best 10% of roofs 792
- Rank of 49 areas 43rd
- Typical system size 2.8 kWp
A typical 4 kWp system here made roughly 2,660 to 3,070 units of electricity last year.
Not a forecast. 103 solar systems around Blackburn were metered through 2024, and the middle half made 666 to 768 kWh for every kWp of panels.
A good roof does better still: the top tenth here reached around 792 kWh per kWp, against a British median of 766.
That places Blackburn 43rd of 49, near the bottom of the areas we can measure — worth knowing rather than glossing over.
Systems here land unusually close together — just 102 kWh per kWp between the lower and upper quarter, against 161 nationally. Results in Blackburn are more predictable than most of Britain.
At the other end, the quietest tenth of systems here made about 557 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 Blackburn 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.
Blackburn: the middle half of 103 systems made 666–768 kWh per kWp.
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Areas near Blackburn
Neighbouring postcode areas we can also measure.
How Blackburn compares
Looking for someone to fit them? MCS-certified solar installers in Blackburn 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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How we measure
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How sunlight falls on a UK roof, month by month.
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