Householders and businesses are being urged to make sure they register before October 11 to have a chance to lower their bills.
Thousands of people have benefitted in Lincolnshire from the scheme in recent years, saving £800,000 between them and now is a great time to register ahead of winter and those higher months of gas and electricity consumption.
Once the registration period is complete, energy suppliers will be invited to compete with their best offers at an auction and you will be sent an email or offer letter stating the potential savings you could then make.
There is absolutely no obligation for householders to accept their personal offer and it's as simple as you checking if the offer the energy provider gives you beats your current deal.
If it does, switching from your existing energy provider could not be more straightforward with the new provider taking care of the whole process.Sign up to switch
If you're not able to register online, you can do so offline at your local council or by calling 0800 048 8439.
Anyone can register, whether you rent your home or own it and all that is required is your annual gas or electricity statement or bills covering the last 12 months to hand.
It's open to all energy users, whether you are on dual fuel, electricity only, pay monthly or quarterly or have a prepayment meter.
Karen Lond, lead officer for the councils said: "Temperatures may be dropping as the leaves start to turn brown but that's no reason not to keep the heat up on checking your energy prices.
"Make sure you register before the deadline on October 11 to potentially save hundreds of pounds on your energy bills going forward."
Boston Borough Council, City of Lincoln Council, East Lindsey District Council, Lincolnshire County Council, South Kesteven District Council, North Kesteven District Council and West Lindsey District Council co-ordinate the scheme and it's administered by the UK's leading collective switching expert, iChoosr Ltd.