In countries that span time zones (aka lines of longitude) the grid likely already provides for "lengthening" the solar day.
For example in the US solar power from the west coast could easily supplement east coast evening demand. Ditto east coast supplementing west coast mornings.
Yes, this means investment in Trans-continental grids, but that makes sense in countries that are hot and wide.
The word "easily" is doing a lot of heavy lifting there. Major expansions to the US grid won't be cheap, done quickly or easy to protect against terrorism.
Getting agreement from all the stakeholders seems to sometimes be an issue - even the relatively small proposed Tres Amigas SuperStation has dragged on for many years and now looks like it won't happen.
agreed - any continental scale country (USA, Canada, Brazil, Russia, India, China, Australia - will have the a diversity of natural resources to become energy self sufficient. US especially for solar, but needs infrastructure build out - can't rely on private sector for energy
For example in the US solar power from the west coast could easily supplement east coast evening demand. Ditto east coast supplementing west coast mornings.
Yes, this means investment in Trans-continental grids, but that makes sense in countries that are hot and wide.