Energy providers will have to improve their services by "£12 a year less" than they normally would and then pass those savings on to consumers, OfGem have announced.
Speaking on Good Morning Britain OfGem's Maxine Frerk, said the changes should come into force "from next April" and savings "should flow into customer's bills from that point".
More top news
Nick Clegg has insisted on more education spending in any coalition deal. But has he learned his lesson since the tuition fees fiasco?
Burnley have banned 21 people for life following violent scenes after a Championship match last season.
Anis Abid Sardar is alleged to have made the roadside bombs which killed Sergeant first class Randy Johnson in Iraq in 2007.