A smart meter is the next generation of a gas and electricity meter. They're being offered to every home in England, Scotland, and Wales. Smart meters come with an in-home display screen that shows you exactly how much energy you're using in pounds and pence, in near real time and will bring an end to estimated bills.

​Smart meters measure how much gas and electricity you’re using, as well as what it’s costing you, and display this in on a handy in-home display. With a smart meter, you can wave goodbye to complicated meter readings. The smart meter shows a digital meter reading and automatically sends the reading to your energy supplier at least once a month, so you will receive accurate, not estimated, bills.