Solar Panels in the BT51 Postcode Area
The BT51 postcode area covers Garvagh and surrounding areas in Londonderry. A typical 4kWp solar panel system here generates around 3,216 kWh per year, saving an estimated £900/yr on electricity bills and covering roughly 85% of average household electricity usage.
Solar Performance in BT51
About Solar in BT51, Garvagh
Homeowners in the BT51 postcode area are eligible for 0% VAT on solar panel installations, making 2026 an excellent time to invest in solar energy. With 804 kWh generated per kWp of installed capacity, the BT51 area benefits from reasonable 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 Londonderry qualify for SEG payments from energy suppliers.
Londonderry in Northern Ireland generates 805 kWh per kWp, about 12% below the UK average of 920 kWh/kWp. Stretching from the Sperrin Mountains to the Atlantic coast, the county's north-western position brings higher rainfall, but the Coleraine and north coast areas enjoy better sunshine, and solar is increasingly popular across the region.