Residents can save money on their energy bill through the new Better Together campaign supported by Cherwell District Council (CDC).
The campaign aims to build up a large group of householders to get the best deals on gas and electricity.
Councillor Nigel Morris, CDC’s lead member for the environment, said: “With spiralling energy costs and fuel poverty becoming an increasing problem we felt it was important for the council to step in and help.
“We hope that with our support, energy customers in Oxfordshire will end up with cheaper bills by signing up to the Better Together campaign.”
The scheme is run by iChoosr, which has operated similar schemes elsewhere in the UK.
People register, then iChoosr runs an auction, and energy companies bid to offer the cheapest prices to the group.
Once the auction has taken place, residents can decide whether or not to switch to the new deal.
Ofgem estimates the average household fuel bill was about £600 in 2004 compared with £1,310 in 2012.
Registration runs from now until April 8.
Residents can register on 0800 1070044, by following the link on Cherwell District Council’s website, or by visiting the Eco Demonstration Building at The Garth, Bicester, open from 12pm to 4pm on Monday, Wednesday and Friday.