SSE have advised that some faulty meters may have resulted in as many as 8,000 customers being overcharged for their electricity due to a manufacturing fault in a batch of Economy 10 meters.
The meters give customers ten hours of off-peak electricity split into three blocks over 24 hours, which means they get low-rates for their heating and hot water during peak times.
The fault was occurring after a power cut, where the meter clock was losing an hour once power was restored, resulting in customers being charged at the standard rate rather than the off-peak rate.
Jacqui Maxwell, SSE’s Head of Customer Service said: “We’re committing to check each and every meter that could be affected by a manufacturing fault, replacing it if necessary and recalculating the charges for as long as the meter has been in place to ensure that no customer loses out.”
The Scottish supplier will recalculate the charges based on the assumption that 70% of the customer’s units were used off-peak. It said typical E10 meter customers use around 50% off their electricity off-peak.