Mr. Graeme Lochhead:

I will deal with the house question first. We say "houses" because everybody recognises a house but there are industries that need high temperatures, such as the pharmaceutical industry. These are industries that will always be gas users. There is limited availability of other products while we are in transition to hydrogen or whatever else will substitute for fossil fuels in the future. We are in the transition period and biomethane is seen as a transition fuel. The renewable heat obligation, RHO, addresses this and there is no subsidy. The renewable heat obligation addresses the fact that large energy users - the large consumers - will pay a penalty for not using it and, therefore, will be encouraged to buy biomethane. We are waiting for the details of the RHO and we encourage the committee to advise the examination of those details so that we can consolidate the investment profile.