People are being urged to read their meters today before energy prices go up.
Energy bills will be capped at £2,500 a year for a typical household from this weekend - up from an average of £1,971 a year. The new Energy Price Guarantee will come into force from October 1 for two years - replacing the Ofgem price cap.
Before bills go up, many homes will be submitting up-to-date meter readings to their energy firms. The idea is that they can prove how much energy they used at a lower price right up to the point bills go up. That means they can only be charged for the energy they use, with no quibbling about overcharging.