The Institute of Engineering and Technology (IET) has warned that the UK will not meet its 2050 climate targets without retrofitting older buildings.

In a report published on Wednesday 10 October, the IET said that “all housing in the UK must have zero carbon emissions from space and water heating, and space cooling” to meet the energy-saving targets set out in the Climate Change Act. It added that 80% of the homes people will inhabit in 2050 have already been built and that therefore it was not possible to rely on new builds alone to meet the targets.

The report called for a “deep retrofitting” approach whereby measures such as adding solar panels, insulation and ventilation, and sustainable heating systems are added simultaneously to a property.