Vouchers worth up to £5,000 will be issued to homeowners in England to make their homes more energy efficient under a new Government scheme that launches in September - here's what we know about the scheme after a new update on 4 August. As part of the Green Homes Grant scheme, eligible homeowners will be able to use the vouchers to help pay for environmentally friendly improvements such as installing loft, floor and wall insulation or replacing single glazing with double-gla