How beneficial this will be still needs to be answered, but it's good to see new energy efforts being explored in the US. Tidal energy has been implemented in Europe and there have been some positive results in terms of generating new forms of energy. The issue of underwater damage is always going to be there so minimizing that impact is critical for the success of any of these programs. Early days, but it's a big step. Source http://www.americablog.com/2012/09/first-tidal-turbine-in-us-goes-live-in.html