My Lords, the noble Lord, Lord Teverson, has some very good points there. If, as I do quite often, you go around properties in different parts of the continent, you find that the energy usage and consumption and insulation are generally a lot better than many of our buildings here. I have a feeling, having talked to a few people in the building trade, that it is because the standards to which we build our properties actually require less insulation and draught-proofing than those of many other countries. It may be because we think that the temperature is always the same here, so it does not really matter.
Another problem that we have to sort out soon is the greater use of air conditioning in buildings, because in some countries—I do not think it is the case here—the current use of energy for air conditioning is a great deal more than that for heating. It is possible to design buildings which need much less air conditioning. Noble
Lords will have seen them in the architectural press at some time. I do not know why we do not encourage more of this in this country; it has been an issue for years.
However, I am still not convinced that the energy suppliers have any incentive to sell less electricity or gas. It is a bit like the water companies: they love having leakages and no meters, because they sell more water and seem to think that is a good idea in places or times where there is a shortage. We are stuck with some perverse incentives. I agree that these are probably not the right amendments to achieve what we want, but it is something that we need to do to get the incentives, insulation and building regulations right, and look at the air conditioning and the design of our buildings so that they are fit for purpose in the time of global warming, as we debated earlier.