Solar Panels in the BT20 Postcode Area
The BT20 postcode area covers Bangor and surrounding areas in Down. A typical 4kWp solar panel system here generates around 3,264 kWh per year, saving an estimated £914/yr on electricity bills and covering roughly 86% of average household electricity usage.
Solar Performance in BT20
About Solar in BT20, Bangor
Homeowners in the BT20 postcode area are eligible for 0% VAT on solar panel installations, making 2026 an excellent time to invest in solar energy. With 816 kWh generated per kWp of installed capacity, the BT20 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 Down qualify for SEG payments from energy suppliers.
Down in Northern Ireland generates 810 kWh per kWp, about 12% below the UK average of 920 kWh/kWp. Stretching from the Mourne Mountains to the shores of Strangford Lough, County Down's east-coast position provides better solar conditions than western Northern Ireland, and its mix of coastal towns has seen steady solar growth.