The £1bn scheme will be open to families in lower council tax bands with less energy efficient homes and will be offered upgrades such as roof, loft or cavity wall insulation.

Those eligible for support include families in council tax bands A to D in England, and A to E in Scotland and Wales, with an energy performance certificate (EPC) rating of D or below.

The government already announced a £3bn package for British homeowners to make their houses more energy efficient and reduce the UK’s carbon emissions in 2020 during the height of the Covid-19 pandemic.

But according to the Public Accounts Committee, the scheme had an unrealistic timeline, “poor design”, and “troubled implementation”. Ultimately only 47,500 of the 600,000 homes originally envisaged received upgrades and only £314m of the £1.5bn budget was spent.

Energy security secretary Claire Coutinho said: “We are determined to help families keep their homes warm through the winter months and save...