The conversion of 53 million households' meters to new 'smart' energy meters has been delayed from 2014 to 2015, on the request of the six largest energy companies in the UK, which have been charged with the task of carrying out the initiative.

This could potentially hold back awareness of energy efficiency in households, damage the sustainable energy industry and, according to NAPIT, could have been avoided.

Ed Davey, Secretary Of State For Energy & Climate Change, said: "The roll-out of smart gas and electricity meters is expected to deliver significant economic benefits and, more widely, to improve the consumer experience and engagement with the energy market – for example by making switching between suppliers quicker and easier.

“The consistent message was that more time was needed if the mass roll-out was to get off to the best possible start and ensure a quality experience for consumers. We therefore now expect suppliers to be ready to start their full-scale roll-out by autumn 2015."

Frank Bertie, NAPIT's trade association chairman, said: "Now the roll-out has been further delayed, it could significantly affect consumers who will not be able to take advantage of sustainable energy measures when they should be, to save themselves money. The industry will lose out on this market, and at a time when the government is promoting energy efficiency through their flagship Green Deal.

This could have been avoided, as registered installers of a gas or electrical Competent Person Scheme could have significantly aided the roll-out of smart meters and are still available to assist within the timeframe."

NAPIT operates a government-approved Competent Person Scheme and UKAS-accredited MCS and Green Deal Certification Schemes, for installers working within the electrical, plumbing, heating, ventilation and renewable energy industries.