Solar Panels
Swansea
Thinking about solar panels in Swansea? The numbers on this site come from a real home just up the M4 in Cardiff — same climate, same Octopus tariffs, same Welsh weather. Here's what solar actually delivers in South Wales.
Does solar work in Swansea?
Swansea and Gower get similar sunshine to Cardiff — around 1,550 hours a year — and coastal south-facing roofs do particularly well. Whether you're in Sketty, Mumbles, Killay or Gorseinon, a well-sited array plus a battery on Octopus Agile is a strong setup.
The honest answer most installers won't give you: solar panels run on daylight, not direct sunshine. Even on an overcast Swansea day they still produce 10–25% of peak. The real difference isn't the weather — it's pairing the panels with a battery and Octopus Agile so you store cheap overnight power and barely touch the expensive evening peak. That's how I've cut my grid import to 1,443 kWh a year.
I'm Luke — a real homeowner, not a sales company. I fitted solar + a Fox ESS battery on my own house, tracked every penny, and now I design systems and connect people across Swansea and South Wales with The Solar House, the team who fitted mine. No pushy sales, just honest numbers.
Solar panels in Swansea, done properly
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