Energy Efficiency Measures: Net Zero Buildings

Debate between Tulip Siddiq and Philip Dunne

Wednesday 26th February 2020 Westminster Hall

[Philip Dunne]

I absolutely agree that retrofitting existing housing stock is one of the biggest challenges we face in trying to reduce fossil fuel use in our buildings. Much of my speech relates to that, so I will go on to talk about it. I will not talk about immigration status, but the hon. Lady makes an important point when she says that we need sufficient skilled people to do the work right across the Government’s infrastructure programme. It does not apply exclusively to retrofitting homes, although that forms part of it. If the skilled tradesfolk I know in my constituency are anything to go by, most earn considerably in excess of the Government’s threshold requirements, so skilled tradespeople may well still be able to come here as they meet the requirements of the points system.

I am pleased that there has been some progress in building more efficient homes over the past 30 years. Overall emissions from homes have been reduced by about one fifth since 1990, despite the fact that there are approximately one quarter more homes now. That is ostensibly due to policies to improve boiler efficiency and basic insulation in the early 2000s, but progress seems to have stalled in recent years. Now is the time for this energetic and committed Minister, whom I am absolutely delighted to see retaining this brief, to make his mark by re-energising energy efficiency across the built environment in Britain.

[Tulip Siddiq (Hampstead and Kilburn) (Lab)]

I am glad that the right hon. Gentleman has mentioned the Minister’s energy and enthusiasm, because I want to ask about energy efficiency in social housing. I am sure he is aware that measures such as insulation, window glazing and low-carbon heating can be installed very easily and cheaply in larger buildings. There are some very good examples of local authorities building low-carbon social housing and slashing energy bills for tenants. In my constituency, Camden Council has been reducing carbon emissions in its housing stock, and it has used refurbishments such as Swiss Cottage library to make big energy savings and install solar panels. Does the right hon. Gentleman think it should be down to cash-strapped councils to carry out those innovations, or should the Minister and the Government be playing more of a part in investing properly in energy-efficient social housing?

[Philip Dunne]

I am glad that the hon. Lady has raised social housing, because I will touch on that in my remarks. I am sure the Minister will respond to that point, because there was a clear commitment in the manifesto on which we were just elected to provide funding for energy efficiency measures specifically in social and affordable housing. I think she will get some good news from the Minister when he responds to the debate.

What is the scale of the challenge? The built environment accounts for nearly 40% of national energy use and approximately one third of UK emissions, but progress in the decarbonisation of buildings has been limited. Enhancing the energy efficiency of the UK’s housing stock is therefore one of the critical steps in achieving our net zero target.

The future homes standard is focused on new builds. The Government have called on the industry to deliver a further 1 million new homes over the course of this Parliament, with a more ambitious target of achieving 300,000 new additions each year by the mid-2020s, so getting the regulations right will have a significant impact on the carbon footprint of millions of future homes. That is good news for the environment as we move to net zero, and for people who are fortunate enough to live in the more fuel-efficient buildings of the future. The homes we are building in this and subsequent Parliaments should last more than 100 years—way beyond the 2050 target date for net zero. We must ensure that the standard of homes being built now contributes to meeting that target. It would clearly be perverse and extremely costly to build homes now that require retrofitting to reduce emissions at a later stage. There should be plenty of opportunities from technical innovation in new build standards to incorporate in the future homes standard. I have no doubt that the Government, in their response to the consultation, will seek to address the challenges we face in ensuring homes become more energy efficient and encouraging new technology and innovation in house building. I would like to see them include the notion of embedded efficiency in the materials used for construction, and not just focus on the future annual running costs.

I have concerns about some elements of the proposals that were consulted on. There is, for example, the suggestion that the fabric energy efficiency standard will be removed, which would make it possible to build less energy-efficient properties and still get them to pass building regulations by fitting larger renewable energy systems; as a result, properties would become more expensive to heat, which could increase fuel poverty. Taken over a large enough area, additional renewable energy capacity might be needed away from the new housing, bringing additional cost. I hope the Minister will reflect on that.

The proposals explicitly remove local authorities’ right to set higher than minimum energy efficiency standards, as higher standards are likely to increase costs for home builders. That would restrict their ability to set their own ambitious targets to tackle climate change, with homes that are sustainable for the future, and remove the incentive for home builders to innovate and become market leaders in energy efficiency.