One is in getting steady feedstocks for the biomass. There are plenty of them around. You've heard from some of the earlier witnesses that there are quite some challenges in getting the different forestry suppliers and the different groups and provincial agencies and whatnot all on-board and on the same page to guarantee a steady supply of cost-effective feedstock. We certainly know the resource is there, but I understand there is a bit of a challenge sometimes in getting a long-term, steady feed.
Otherwise, the economics for this sort of technology are looking quite good.