Stephan:   The big obstacle non-carbon energy must overcome is how to store solar and wind energy. Here is a very novel option that I think is going to be a serious contender, unless there is a major breakthrough in batteries. Although I think the long term trend is towards localized energy, it is not going to be an easy transition, and it will require going through intermediate steps such as this technology. These new industries are where the new middle class will come from if it is allowed to develop. It is important to note that this is not fracking, and there being very leakage is a critical parameter. This is pumping water into subterranean reservoirs left from oil extraction. It would be an interesting recycling, and would allow many people trained in the skills involved with oil wells to keep their jobs