Ofgem is expected to lower household energy bills to an average of £2,053 a year from July to reflect tumbling wholesale prices, according to analysts.
The regulator will announce its latest energy price cap on Thursday as campaigners warned consumers are likely to feel little relief with bills remaining well above pre-pandemic levels.
Consultancy firm Cornwall Insight said households should also expect their energy bills to remain stubbornly high through the coming winter, at almost double the rates paid in 2020, and remain above pre-pandemic levels for the rest of the decade.