Dr Nothnagel said the Pebble Bed Modular Reactor (PBMR) in principle is a great idea. Had it been approached modestly in a phased approach, "the smaller and more conventional demo model "might have had completely different outcomes. This would have made licensing much easier. People license things they understood much better than innovation. It would have added value had it succeeded; the PBMR is low on water consumption. This is a valuable commodity in our country, and could be brought to where the energy is required. It has a potential for delocalised processed heat and a hydrogen economy. A lot of training in engineering and manufacturing came out of it.