On your point about storage, if more renewable electricity is generated than is needed in a particular area, it's much cheaper to transport it than to store it.

On your point about storage, if more renewable electricity is generated than is needed in a particular area, it's much cheaper to transport it than to store it. For example, this happens on a continental scale in Europe where there are interconnectors between countries that form a Europe-wide grid. The losses for transmission of electricity are about 3.5% per 1,000 km. The losses for storage are at least 15%.