Solar Panels in the CM20 Postcode Area
The CM20 postcode area covers Harlow and surrounding areas in Essex. A typical 4kWp solar panel system here generates around 3,860 kWh per year, saving an estimated £1,081/yr on electricity bills and covering roughly 102% of average household electricity usage.
Solar Performance in CM20
About Solar in CM20, Harlow
Homeowners in the CM20 postcode area are eligible for 0% VAT on solar panel installations, making 2026 an excellent time to invest in solar energy. With 965 kWh generated per kWp of installed capacity, the CM20 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 Essex qualify for SEG payments from energy suppliers.
Essex in the East of England generates 970 kWh per kWp, about 5% above the UK average of 920 kWh/kWp. One of England's driest and sunniest regions, Essex benefits from its position on the Thames Estuary and North Sea coast, and its large population drives high absolute numbers of solar installations.