Opus Energy has agreed to pay more than £7 million in refunds, redress, and goodwill payments after overcharging almost 88,000 non-domestic customers between 2003 and 2023.
The supplier identified two billing system faults that temporarily placed customers on wrong tariffs or duplicated billing periods, affecting 87,825 accounts over 20 years. While most overcharges were under £50, one customer overpaid £102,000.
Opus Energy resolved the faults and will pay £5.5 million in refunds and £1.56 million in goodwill payments, and will not recover undercharged amounts. Current customers have been refunded; former customers owing £2.50 or more will be contacted. Unclaimed or smaller refunds will go to the Energy Redress Fund.
