Solar Panels in the BT40 Postcode Area
The BT40 postcode area covers Larne and surrounding areas in Antrim. A typical 4kWp solar panel system here generates around 3,252 kWh per year, saving an estimated £911/yr on electricity bills and covering roughly 86% of average household electricity usage.
Solar Performance in BT40
About Solar in BT40, Larne
Homeowners in the BT40 postcode area are eligible for 0% VAT on solar panel installations, making 2026 an excellent time to invest in solar energy. With 813 kWh generated per kWp of installed capacity, the BT40 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 Antrim qualify for SEG payments from energy suppliers.
Antrim in Northern Ireland generates 810 kWh per kWp, about 12% below the UK average of 920 kWh/kWp. Stretching from the shores of Lough Neagh to the famous Antrim Coast Road, the county benefits from mild maritime conditions and has seen growing solar adoption driven by strong government incentive schemes.