Solar Panels in the GL20 Postcode Area
The GL20 postcode area covers Tewkesbury and surrounding areas in Gloucestershire. A typical 4kWp solar panel system here generates around 3,800 kWh per year, saving an estimated £1,064/yr on electricity bills and covering roughly 100% of average household electricity usage.
Solar Performance in GL20
About Solar in GL20, Tewkesbury
Homeowners in the GL20 postcode area are eligible for 0% VAT on solar panel installations, making 2026 an excellent time to invest in solar energy. With 950 kWh generated per kWp of installed capacity, the GL20 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 Gloucestershire qualify for SEG payments from energy suppliers.
Gloucestershire in the South West generates 950 kWh per kWp, about 3% above the UK average of 920 kWh/kWp. From the Cotswold Hills to the Severn Vale, Gloucestershire enjoys good sunshine and moderate rainfall, and has seen strong solar uptake across its attractive market towns and rural communities.