Metered, not modelled
Solar output in Newport
720–837 kWh per kWp a year
the middle half of 63 real Newport systems, measured over 2024
- Systems measured 63
- Median 798
- Best 10% of roofs 874
- Rank of 49 areas 18th
- Typical system size 3 kWp
A typical 4 kWp system here made roughly 2,880 to 3,350 units of electricity last year.
Not a forecast. 63 solar systems around Newport were metered through 2024, and the middle half made 720 to 837 kWh for every kWp of panels.
A good roof does better still: the top tenth here reached around 874 kWh per kWp, against a British median of 766.
Only 65% of these systems face south, south-east or south-west, against 86% nationally — so part of what you see here is roof direction, not the sky.
That places Newport 18th of 49, ahead of 31 of the areas we can measure.
Systems here land unusually close together — just 117 kWh per kWp between the lower and upper quarter, against 161 nationally. Results in Newport are more predictable than most of Britain.
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 Newport 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.
Newport: the middle half of 63 systems made 720–837 kWh per kWp.
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Areas near Newport
Neighbouring postcode areas we can also measure.
How Newport compares
Looking for someone to fit them? MCS-certified solar installers in Newport 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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