I think it has some real possibilities. Again, it's about the investment required to understand how the cost will evolve through time. Today, it's expensive, but as with any number of technologies in the electricity sector, the prices are coming down. When the technology reaches that price point, as we all know, there's a remarkable resource, and that resource would still need to be re-timed. The tide runs twice a day, and customers use energy every day. It's a piece of the solution; it's not the complete solution, but we're certainly very interested in advancing it.
