The government scheme helps homeowners install a range of energy efficiency measures by providing them with money back on the contributions they make towards improvements. The fund, which opened to applications on 9 June this year, has issued more than £43m worth of vouchers in its first six weeks.

Up to £120m of the three-year £540m government investment is available this year.

As a result of this popularity, the Department of Energy and Climate Change is reducing the amount new applicants can receive for installing Solid Wall Insulation from £5,000 to £4,000 as of 25 July. In addition, flue gas head recovery units will be removed from the list of approved measures effective 5 August.

Amber Rudd, Parliamentary Under Secretary of State for Energy and Climate Change, said: “Green Deal Home Improvement Fund vouchers have been flying out of the door. We’re delighted that so many families are already making the most of this very generous offer.

“Changes announced today ensure even more households can benefit from warmer homes using less energy. There’s up to £120m in the pot this year, but it won’t be around forever. Act now.”

Following the changes Green Deal Home Improvement Fund domestic energy customers can get up to £1,000 for installing two measures from an approved list, up to £4,000 for installing solid wall insulation and up to £100 refunded for the assessment of their property.

For more information visit the government’s website.