Solar Panels in the S40 Postcode Area
The S40 postcode area covers Chesterfield and surrounding areas in Derbyshire. A typical 4kWp solar panel system here generates around 3,608 kWh per year, saving an estimated £1,010/yr on electricity bills and covering roughly 95% of average household electricity usage.
Solar Performance in S40
About Solar in S40, Chesterfield
Homeowners in the S40 postcode area are eligible for 0% VAT on solar panel installations, making 2026 an excellent time to invest in solar energy. With 902 kWh generated per kWp of installed capacity, the S40 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 Derbyshire qualify for SEG payments from energy suppliers.
Derbyshire in the East Midlands generates 905 kWh per kWp, about 2% below the UK average of 920 kWh/kWp. While the Peak District in the north is wetter, the southern lowlands around Derby enjoy good solar conditions, and the region is home to major employers in renewable energy manufacturing.