I should say to my noble friend Lord Teverson that having not been perhaps been easy in my comments up to now, on this I say to him that this is a real and very difficult issue that I am sure the Government are thinking about very hard. This is because levels of sustainability differ in different circumstances. The Committee on Climate Change discusses this on a regular basis because it is extremely hard to keep up with the developing circumstances. What we do not want is to think that we have changed to a low-carbon alternative and discover that actually it is nothing of the sort. That is the worry that people have.
There is a second worry, which is that we are facing ever greater shortages of food. The one thing we do not want is to have a situation in which our battle against climate change—climate change itself causes some of the shortages of food—is then seen as a kind of competition with the provision of food. That is of course why biomass in those circumstances is so complex a matter. However, I say to my noble friend that no one has a simple answer to this and I am sure he is not going to give us one today; we would not expect one.
No one has a simple answer because we all started off on the wrong basis. For example, the green movement was very much in favour of biomass. It was therefore almost unquestionably a good thing until they began to recognise the potential downside. That meant there was a huge swing to the opposite direction. If we are not careful, we will find ourselves in extremes rather than finding some sensible place for the pendulum to stop.
It is also true that there are many vested interests in this area. The farming industry saw it as a wonderful way in which it could increase its opportunities of reaching markets because this was a new area that farmers could exploit. Of course, as food prices go up and their returns from food production become greater, it is a real issue for them too. While in the United States, I have to declare that I had a visit from the representatives of the so-called—“so-called” because I cannot prove this, as I will explain shortly—sustainable forestry industry. They came to explain to me, as chair of the Committee on Climate Change, that they were unhappy about what we had said about these issues. I said, “Do you have forests that are independently certified?”. “No,” they said, “but we know it’s all right”. I cannot accept that as a reasonable response.
In the world out there, we must be careful about how we change our energy supplies and do not undermine the truth of what we are saying.
So I say to my noble friend: this is a difficult area. None of us expects him to have an easy answer, because no one else has. However, I hope he understands that we will have to look at this during the Bill and to come back to it on Report, simply because things are moving so fast that we need to be sure that we have done everything we can to protect the Government from later assertions that they have encouraged the substitution of one form of emission creation with another form of emission creation. That is what we have to guard against.