Solar Panels in the SN1 Postcode Area
The SN1 postcode area covers Swindon and surrounding areas in Wiltshire. A typical 4kWp solar panel system here generates around 3,900 kWh per year, saving an estimated £1,092/yr on electricity bills and covering roughly 103% of average household electricity usage.
Solar Performance in SN1
About Solar in SN1, Swindon
Homeowners in the SN1 postcode area are eligible for 0% VAT on solar panel installations, making 2026 an excellent time to invest in solar energy. With 975 kWh generated per kWp of installed capacity, the SN1 area benefits from above-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 Wiltshire qualify for SEG payments from energy suppliers.
Wiltshire in the South West generates 980 kWh per kWp, about 7% above the UK average of 920 kWh/kWp. Home to Stonehenge and Salisbury Plain, Wiltshire enjoys excellent sunshine hours and low rainfall across its chalk downland landscape, making it one of the strongest inland regions for solar energy in the UK.