Dr. Pierre-Marie Aubert:

I am not an expert regarding the questions asked by the Deputy. There is some potential to use waste to generate biogas. We must keep in mind that in most cases, we cannot run a biodigester with waste only. We also need residues from crops like straw or even maize silage, as is the case in Germany. This must be quantified. If not quantified, it was at least approached in the Teagasc report from 2013 so there should be some data. Regarding the best plants or trees for sequestration, it depends on the paleoclimatic conditions of Ireland, which I do not really know.