Many store owners have found themselves forced to pay a higher tariff for their gas and electricity because they have missed the window for cancelling their existing contract.
Ofgem's recommendations are part of a series of measures intended to deal with 'undue discrimination' that small businesses and domestic customers receive with their energy supply. They include new standards of conduct and a ban on unjustified pricing schemes.
The Fight the Power campaign has encouraged retailers to send notice of termination to their suppliers, saving themselves thousands of pounds a year.
The project culminates on May 1 - Cancellation Day - when thousands of retailers will be urged to look for a new supplier.