Solar Panels in the CF46 Postcode Area
The CF46 postcode area covers Treharris and surrounding areas in Merthyr Tydfil. A typical 4kWp solar panel system here generates around 3,460 kWh per year, saving an estimated £969/yr on electricity bills and covering roughly 91% of average household electricity usage.
Solar Performance in CF46
About Solar in CF46, Treharris
Homeowners in the CF46 postcode area are eligible for 0% VAT on solar panel installations, making 2026 an excellent time to invest in solar energy. With 865 kWh generated per kWp of installed capacity, the CF46 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 Merthyr Tydfil qualify for SEG payments from energy suppliers.
Merthyr Tydfil in Wales generates 860 kWh per kWp, about 7% below the UK average of 920 kWh/kWp. At the head of the Taff Valley in the South Wales Valleys, Merthyr Tydfil was once the iron capital of the world and is now embracing renewable energy as part of its post-industrial regeneration.