Household energy bills could jump by £332 a year in July as recent sharp increases in wholesale prices are set to feed through into Ofgem's price cap, according to the latest forecasts.Analysts Cornwall Insight said forecasts for the watchdog's price cap from July to September had surged to £1,973 a year for a typical dual fuel households - an increase of £332 or 20% on April's cap.

Household energy bills could jump by £332 a year in July as recent sharp increases in wholesale prices are set to feed through into Ofgem's price cap, according to the latest forecasts.Analysts Cornwall Insight said forecasts for the watchdog's price cap from July to September had surged to £1,973 a year for a typical dual fuel households - an increase of £332 or 20% on April's cap.