Calderdale Council wants residents to join forces to slash their energy bills.
The move could see home-owners save as much as £250 a year by changing suppliers.
It could be one of the biggest switches of its kind in the country but people must register by January 28.
All residents have to do to take part in the collective energy switch, is add their address to a list the council is organising to seek a better annual rate for electricity and/or gas supplies.
The list will be auctioned on January 29 along with lists for authorities in Greater Manchester.
“Until now, the big energy companies have been able to call all the shots, but by working as a collective, households can drive a harder bargain and get a cheaper tariff,” said Calderdale Council’s economy and environment spokesman Barry Collins.
The Big Six energy companies in Britain, supplying gas and electricity to over 50 million homes and businesses, are British Gas, EDF Energy, E.ON Energy, npower, Scottish Power and SSE.
With energy prices rocketing and many households struggling to pay their bills, the Calderdale switch take-up is expected to considerable.
There is no obligation for anyone to accept the rate offered at the auction – each household can compare what’s on offer with their current rate and decide what to do.
But the more people who sign up as interested, the better the auction rates tend to be, said Coun Collins (Lab, Illingworth and Mixenden).
Liberal Democrat scrutiny panel chairman Coun David Hardy (Elland) said: “While some people switch companies or tariffs occasionally, many have never switched their energy provider or even compared different tariffs.
“These are the people who are likely to get the best savings out of the collective switch.”
People with pre-payment meters are also being encouraged to sign up, as on average they pay 15 per cent more for their energy.
“People are always being told they have to pay more but with this scheme, we hope to give them something back,” said Coun Hardy.
The opportunity to express an interest is open to anyone with a residential gas or electric supply and the more people who do so, the better the chance of a great deal being secured for everyone.
Sign-up online at www.calderdale.gov.uk/housing or ring 0800 009 3363, Monday to Friday, 9.00am to 5.00pm.
You will need to have a recent energy bill with you or an annual statement from your supplier.
So far more than 1,000 householders have registered for the scheme including residents in Manchester, Bury, Rochdale, Oldham, Wigan, St Helens and Gloucestershire.