Everyone has their Solar panel on their roof in Germany, but we still need the power plants for dreary days and for storing over-consumption to deal with those dreary days?

By decentralizing power generation, the renewables boom could do to the power industry what the internet did to the media: put power in the hands of the little guy, and force power companies to rethink how they do business. As soon as the sun comes out, that is.

This is almost a philosophical problem. How do you store the good thing you ‘harvest’ during good times to last during the bad times, when you need it most?