Solar Panels in the SA9 Postcode Area
The SA9 postcode area covers Ystradgynlais and surrounding areas in Powys. A typical 4kWp solar panel system here generates around 3,456 kWh per year, saving an estimated £968/yr on electricity bills and covering roughly 91% of average household electricity usage.
Solar Performance in SA9
About Solar in SA9, Ystradgynlais
Homeowners in the SA9 postcode area are eligible for 0% VAT on solar panel installations, making 2026 an excellent time to invest in solar energy. With 864 kWh generated per kWp of installed capacity, the SA9 area benefits from near-average solar irradiance for the UK.
Through the Smart Export Guarantee (SEG), you can also earn money by exporting surplus electricity back to the grid. Most MCS-certified installations in Powys qualify for SEG payments from energy suppliers.
Powys in Wales generates 855 kWh per kWp, about 7% below the UK average of 920 kWh/kWp. The largest region in Wales by area but the most sparsely populated, Powys stretches across the central Welsh uplands, and while its higher elevations bring more rain, the sheltered valleys of the Severn and Wye provide good solar conditions.