You do realize HVDC grids can do 3,000km energy travel, right? That's basically anywhere to anywhere, continental US. There's already installs like the PDCI https://en.wikipedia.org/wiki/Pacific_DC_Intertie that take 3GW from north oregon to LA.
> so the 3.2GWh battery grid storage array, in operation, this is still 1/100th what is needed?
That's closer to 1% of what California needs by itself then even 1% of the USA's need. We aren't even taking into account the large and continual growth in electricity demand yet either.
https://www.energy-storage.news/edwards-sanborn-california-s...
You want a 320 GWh installation?
You do realize HVDC grids can do 3,000km energy travel, right? That's basically anywhere to anywhere, continental US. There's already installs like the PDCI https://en.wikipedia.org/wiki/Pacific_DC_Intertie that take 3GW from north oregon to LA.
There's even transcontinental energy links in the works like this: https://en.wikipedia.org/wiki/Australia-Asia_Power_Link