My Lords, I thank my noble friend for tabling his amendment, which has allowed this, albeit brief, discussion. I will attempt to be equally brief in my response compared with my response on the previous group of amendments.
As I said during the discussion on Amendment 93AAA, the carbon compliance levels put forward are well intentioned and while the Government accept that, we believe them to be unworkable. We all share a desire to see the building of energy-efficient homes that reduce carbon emissions and fuel bills, but we believe that at this time this amendment goes too far. We should not forget that the Government have made significant progress to deliver on the commitments that we and the previous Government made to ensure that zero-carbon homes are built from 2016 onwards. Since we confirmed our commitment to the 2016 target for new homes to be zero carbon, we have further strengthened the requirements of the 2006 building regulations, in 2010 and 2014, achieving a total reduction of 30%. In fact, the most recent changes we made to the building regulations, in 2014, will help save home owners £200 on average on their fuel bills compared to the new homes built before we came to office.
We are not stopping there. As I have said already, we have confirmed that from 2016 all new homes will have to meet even higher standards for on-site measures, to be set out in building regulations. These will be set at a level equivalent to that required for a home built to the level 4 standard of the code for sustainable homes. They will also save home owners on average a further £700 annually, when compared to an existing home.
In order to raise or lower the energy requirements for new homes, it is always necessary to consult carefully with industry. We should not forget that we are talking about a technical area that impacts across the construction sector. It would therefore not be workable to deliver the proposed standard within six months. Even if it were, it is not prudent to have such a rigid timeframe for delivery in the Bill—or to set requirements such as this in primary legislation. If, in the light of the consultation, there needed to be any slight adjustments to requirements, we would not be able to do so without new primary legislation. We have said that we will strengthen standards and deliver zero-carbon homes from 2016. That is a clear government commitment, for which we will be held accountable if we do not deliver. Between now and 2016 we will consult widely on how the new and higher proposed carbon compliance standard should be met. We will share that consultation with noble Lords.
I turn to some specific questions. The noble Viscount, Lord Hanworth, and my noble friend Lady Maddock asked about the on-site standard and the watering down. The type and design of housing built in England varies enormously. Some technical solutions for reducing carbon emissions work well in certain circumstances—for
example, solar panels on roofs—but in other cases, the cost of the technology outweighs the benefit. Developers need to have choices about how they meet the zero-carbon policy. This will increase competition in the marketplace and help minimise costs. We need to strike a balance between uplifting energy performance requirements and mitigating any negative burdens on the housebuilding industry.
The noble Viscount also asked about regulation and allowable solutions. It is not technically feasible or economic to try to achieve the emissions from on-site measures alone, as we recognised when the idea of allowable solutions was first introduced. As a point of fact, the concept of allowable solutions was of course first proposed by the previous Administration in 2008.
My noble friend Lady Maddock asked about wastage on zero-carbon sites. The Sustainable and Secure Buildings Act requires the Government to report on the reuse of building materials on the site. If there is further detail on the numbers, I will bring it to her attention. She also raised promoting innovation. The drive to high-energy efficiency is in itself driving innovation, which we encourage. That is being aided by various government programmes.
The noble Lord, Lord McKenzie, spoke about doing much of this on-site. I agree. We want to push on-site measures, but they need to be cost-effective and a balance needs to be struck.
I hope that the approach which I have set out here, and earlier during the brief discussion on Amendment 93AAA, demonstrates why this amendment would be problematic in terms of the increased demands on the homebuilding industry and the mechanics of delivering it. On that basis, I hope that the reassurance provided to my noble friend Lord Teverson is enough to encourage him to withdraw the amendment and work with us to deliver a balanced package of zero-carbon measures from 2016 onwards.
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