Metered, not modelled
Solar output in Dartford
765–881 kWh per kWp a year
the middle half of 52 real Dartford systems, measured over 2024
- Systems measured 52
- Median 831
- Best 10% of roofs 916
- Rank of 49 areas 9th
- Typical system size 1.8 kWp
A typical 4 kWp system here made roughly 3,060 to 3,520 units of electricity last year.
Not a forecast. 52 solar systems around Dartford were metered through 2024, and the middle half made 765 to 881 kWh for every kWp of panels.
The best tenth reached about 916 kWh per kWp — some 20% clear of the British median of 766, and among the strongest roofs we can measure anywhere.
Systems here are smaller than typical, a median of 1.8 kWp against 2.9 nationally.
That puts Dartford 9th 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.
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 Dartford 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.
Dartford: the middle half of 52 systems made 765–881 kWh per kWp.
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Areas near Dartford
Neighbouring postcode areas we can also measure.
How Dartford compares
Looking for someone to fit them? MCS-certified solar installers in Dartford 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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