Answer:
For business and landlords, every 5 years. For residential homeowners, every 10 years.
Receive a free 7kWh EV charger with any Solar PV and battery installation ✦ Zero VAT eligible with all projects including battery storage ✦ Free on-site estimation with impartial advice ✦ Receive 10 years of free solar servicing with your solar PV project ✦ Upon request, spread the cost with 0% APR Finance ✦ Receive a free 7kWh EV charger with any Solar PV and battery installation ✦ Zero VAT eligible with all projects including battery storage ✦ Free on-site estimation with impartial advice ✦ Receive 10 years of free solar servicing with your solar PV project ✦ Upon request, spread the cost with 0% APR Finance ✦