The campaigns director of the body, Adam Scorer, went on to explain the benefits of using the technology.
He explained: "Not only will smart meters allow people to make simple changes in their energy use that make a difference in the fight towards climate change.
"Smart meters will also wipe out the excuse for rip-off prepayment meters charges and bring a long overdue end to estimated bills."
The support for the proposed changes to legislation has come after energywatch joined a number of campaign groups at a summit to discuss fuel poverty this week.
Organised by Ofgem, the meeting led to the creation of a new set of measures to tackle the issue.
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