I've heard, or supposed, that 'the grid' is the battery. However, I have no idea over what distance it is feasible to transmit electicity from the generator.
Society as it exists now, is inefficient at using power when it is available because we've never had to make that concession.
I wonder if electicity from transient sources would be better used for something like aluminum recovery, or something that could take more or less current on a variable basis...as the wind blows or the sun shines. This would or could free up other constant power generators on the grid to serve less flexible consumers.
First you get good, then you get fast. Then grouchiness sets in.
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)