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Plug-in solar in South Wales

Output measured at Cardiff, the unit rate you pay here, who runs your local network, and the compliant kits in stock.

Network operator: National Grid Electricity Distribution (South Wales)

south, tilted 30°
920 kWh/yr
south, vertical (balcony, wall)
662 kWh/yr
per kWh, 1 Oct 2026 to 31 Dec 2026
26.6p
A row of British terraced houses under a blue sky
Photo: Sky Erickson / Unsplash
Planning rules in Wales differ from England's. See our Scotland and Wales guide.

PVGIS solar data

Output by direction

Yearly output of an 890 Wp plug-in kit in South Wales by direction
FacingTilted 30° (garden, roof)Vertical (balcony, wall)
South920 kWh662 kWh
South-east862 kWh601 kWh
South-west877 kWh623 kWh
East733 kWh447 kWh
West752 kWh469 kWh
North-east587 kWh267 kWh
North-west601 kWh278 kWh
North529 kWh175 kWh

A typical 890 Wp kit with the 800W output cap, no shading. PVGIS 5.3 solar data. Method.

Live stock

Compliant kits in stock, ranked for South Wales

Calculator for South Wales →

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Cost per kWh = price ÷ estimated output over 10 years (0.5%/yr panel ageing). Output from PVGIS for your location, capped at 800W. How we calculate.

Towns in South Wales

Unit rate history

  • 1 Oct 2026 to 31 Dec 202626.55p/kWh
  • 1 Jul 2026 to 30 Sept 202626.33p/kWh

Source: Ofgem energy price cap by region (direct debit, single rate). VAT on domestic electricity is 0% from 1 October 2026.