There have been a lot of recent advances in solar and wind. Our group, in particular, has focused on the storage side of the equation, storing the energy more efficiently and reducing waste. Either way, we are confident we can power this thing via only solar in areas without any traditional power infrastructure. However, you're right that stabilizing existing power sources would be a big win. We have a LOT of experience with power issues in rural India, and technologies to mitigate the problems. We'll be using whatever solution best fits the individual deployment situation.