The next Prime Minister must act urgently to address the "national emergency" of spiralling energy bills as millions of households face paying £3,549 a year from October.
Regulator Ofgem confirmed an eye-watering 80% hike in the energy price cap for Brits on default tariffs from this month - with forecasts suggesting the cap could rise above £5,000 next year.
Ofgem boss Jonathan Brearley said the increase would be "devastating" for families and called for urgent Government intervention.
