Eon

Co-op Energy was a customer service darling last December, with 63% of its customers rating it great and just 7% rating it poor. But in a staggering turnaround, just six months later over half of its customers (56%) rate its service as poor and just 22% rate it great. 

Energy firms are facing increased pressure from the Government to pass on a fall in wholesale costs – the price providers pay for energy – to consumers by slashing household bills.

Around 47,000 E.on customers have received or will soon be paid a refund, while charity Citizens Advice will get £7.75 million, after Ofgem found the provider overcharged customers. 

Customers of the big six energy suppliers are paying up to £234 a year too much for their gas and electricity bills, a competition probe has found. But MoneySavingExpert.com has been saying for years that households could save hundreds by switching.

Northern Ireland's main electricity supplier has cut bills by nearly a tenth for all households after falls in wholesale gas prices.

Ovo Energy has today announced it's cutting gas prices by 10.4%, which is more than double the recent price cuts revealed by the big six energy providers. But households can still save more by switching.

EDF Energy has today become the last of the big six energy providers to announce a gas price cut this year, but prices will only fall by a tiny 1.3% and not until 11 February.

SSE has today become the fifth of the big six energy providers to announce a gas price cut this year, but the 4.1% drop won't take effect until 30 April.

Npower has today become the fourth energy provider to announce price cuts this year, but the drop doesn't take effect until 16 February and the 5.1% reduction only applies to gas.

Energy firm SSE is to be investigated by Ofgem over concerns it restricted competition in the electricity connections market.