Solar Panels in the CF81 Postcode Area
The CF81 postcode area covers Bargoed and surrounding areas in Caerphilly. A typical 4kWp solar panel system here generates around 3,440 kWh per year, saving an estimated £963/yr on electricity bills and covering roughly 91% of average household electricity usage.
Solar Performance in CF81
About Solar in CF81, Bargoed
Homeowners in the CF81 postcode area are eligible for 0% VAT on solar panel installations, making 2026 an excellent time to invest in solar energy. With 860 kWh generated per kWp of installed capacity, the CF81 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 Caerphilly qualify for SEG payments from energy suppliers.
Caerphilly in Wales generates 865 kWh per kWp, about 6% below the UK average of 920 kWh/kWp. Situated in the South Wales valleys north of Cardiff, Caerphilly is home to one of the largest medieval castles in Europe and benefits from some shelter provided by the Brecon Beacons to the north.