Deirdre Costigan

I am sure that the Minister will have more to say on that when she responds. Heat batteries in the UK currently face a significant disadvantage compared with heat pumps as they are not eligible for a grant under the boiler upgrade scheme. I know the Minister is continuing to look at how she can maximise the benefits of the scheme and I hope she will also look at whether new technologies such as heat batteries can also be supported. Unlike heat pumps, heat batteries are not on the list of energy-saving materials that qualify for VAT reductions, so extending VAT relief to heat batteries would help to heat the 20% of homes currently missing out. I have written to the Chief Secretary to the Treasury to ask him to consider reducing VAT for heat batteries, and I hope the Minister might work with him on that. There are barriers to installing networked ground source heat pumps that use heat batteries, including planning considerations and the need to adopt a street-by-street approach that can upgrade hundreds of homes in one go. The Minister has already committed to changing planning rules for air source heat pumps. I hope that she will consider whether changes also need to be made for networked ground source pumps and that she will include networked heat pumps allied with heat batteries in the forthcoming low-carbon flexibility road map she is working on. To give certainty to British businesses investing in innovative technologies such as heat batteries, we need to ensure that there are consistent heating requirements for new homes being built. The Minister will shortly be bringing forward the new future homes standard to end the scandal of gas boilers still being installed in new homes. I hope the standard will include heat batteries and other emerging technologies.