Solar Panels in the LL12 Postcode Area
The LL12 postcode area covers Caergwrle and surrounding areas in Flintshire. A typical 4kWp solar panel system here generates around 3,168 kWh per year, saving an estimated £887/yr on electricity bills and covering roughly 83% of average household electricity usage.
Solar Performance in LL12
About Solar in LL12, Caergwrle
Homeowners in the LL12 postcode area are eligible for 0% VAT on solar panel installations, making 2026 an excellent time to invest in solar energy. With 792 kWh generated per kWp of installed capacity, the LL12 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 Flintshire qualify for SEG payments from energy suppliers.
Flintshire in Wales generates 870 kWh per kWp, about 5% below the UK average of 920 kWh/kWp. This northeast Welsh region borders Cheshire and benefits from the lower rainfall of the Dee Estuary corridor, making it one of the better areas in Wales for solar energy with conditions closer to northwest England.