More than 1.5 million customers have switched their electricity suppliers this year.
Trade body Energy UK said more than 250,000 households moved to a new provider in the past month.
It also stated small suppliers gained more than 65,000 accounts – a quarter of all switches in 2015.
Lawrence Slade, Chief Executive of Energy UK, said:“There are now even more suppliers for customers to choose from. It is great to see thousands of households continuing to take advantage of this by switching electricity provider each month.
“Many customers will be coming off their fixed energy deals over the coming weeks so now is a good time to look around to see what deals are on offer.”