It is hoped that consumers will be more prudent with energy usage if they see how much they are using in real time. They will also allow timely, accurate information on energy consumption to be fed back to the energy supplier, which will mean an end to estimated bills.
Electricity Display Devices (EDDs) give a real-time, approximate readout of electricity consumption, for the benefit of the consumer only, and are not used for calculating bills. From May 2008 the Government plans to supply these devices free to any household that wants one, by contacting their electricity supplier.