High domestic energy prices are likely to be "the new normal" with a slight rise predicted for January, according to consultancy Cornwall Insight.
A home using a typical amount of gas and electricity will pay £1,736 annually from the new year, according to the forecaster.
That would be a rise of £19 a year, a 1% increase, compared with the current typical annual bill of £1,717, it said, with little chance of a big drop in the foreseeable future.
Energy regulator Ofgem will announce the next official quarterly price cap on Friday, with some charities concerned about how less well-off households will cope during the colder months.