The energy price cap sets a maximum price that energy companies can charge people in England, Scotland and Wales for each unit of energy they use.
Millions of households will find out on Tuesday about an expected rise in their energy bills from April, as regulators announce new prices for the spring and early summer months.
Watchdog Ofgem will announce the new energy price cap for April until July, as experts forecast bills will rise by about 5% compared with what they are currently.
Simon Francis, co-ordinator of the End Fuel Poverty Coalition, a campaign group, said high power prices have “gone on long enough”, adding that Labour should make it easier for people to improve the energy efficiency of their homes.
While the price cap is likely to go up, in practice, most people will pay less to their energy suppliers in the spring and summer months.
