A cut-throat market slashed into profit as oil major Shell forayed into the energy supply market last year, the company has revealed.
Shell Energy Retail has been forced to pay £390,000 after overcharging around 12,000 energy customers on its default tariffs.
Royal Dutch Shell has renamed First Utility as Shell Energy as it announced it has switched all of the supplier's British residential customers to 100% renewable electricity.
Britain's energy watchdog is scrutinising suppliers over their complaints handling after finding more than half of customers remain unhappy with how grievances have been dealt with.
Shell has completed the takeover of UK household energy provider First Utility.
Shell has clinched a deal to buy 100% of UK household energy and broadband provider First Utility.
Economy Energy has been ranked the worst for customer service among suppliers for a second consecutive quarter following complaints about billing errors and its communication system.
Npower, Scottish Power and First Utility have fared worst in a bi-annual survey of customer service to record the highest proportion by far of “very dissatisfied” complainants.
Your energy supplier might be offering other customers a far cheaper deal and not telling you about it.
Many energy suppliers will happily avoid their customers because they know they are on massively overpriced tariffs, according to one industry expert.