John Lewis is to trial a new product-labelling scheme that will give shoppers the lifetime electricity running costs on white goods.

The system, which is backed by the Department of Energy and Climate Change, is designed to help people understand how energy efficient products can bring savings to households.

During the six month trial a number of John Lewis categories will have labels which display the average lifetime running costs.

Energy secretary Edward Davey launched the pilot yesterday and said he hoped the John Lewis collaboration would raise consumer awareness of energy running costs and would “lead to more retailers rolling out clearer labelling,” The Guardian reported.