I am sorry if I unintentionally misled the hon. Gentleman. Shale gas can of course be injected directly into the grid. AD-produced gas has a slightly different calorific value, but with minimal treatment it can actually go directly into the grid in the same way as shale gas, so there is a direct comparison in production and in end use between the two processes. I suggest that if we want an industry that diverts substantial amounts of gas from import, building up AD plants and injecting green gas into the system might be a more environmentally sound and less intrusive way of doing so which might be more acceptable to the communities affected by any potential intensive fracking.
I appreciate that a farm AD plant at the end of a lane is not exactly the prettiest sight in the world, but it produces gas at a near zero overall net carbon cost, because it simply recycles what has captured carbon in the first place, and produces a different pattern of use. In the long term, it is potentially—