There was an article earlier about the distribution challenges that come from large workload fluxes, too - tl;dr is the transmission lines get less efficient under higher load, so smoothing out the demand curve to the end user also raises the efficiency of the entire grid.

And as someone points out below - the proliferation of EVs also helps this, because they can act as a “deep” reservoir so the local residential batteries can be much smaller - more buffers than something expected to run the house for more than a couple hours, so that makes the whole setup even cheaper, depending on when and where the EVs are getting charged.

Distributed power storage/generation has been a thing for a century and it’s finally economical enough to be mainstream.

This was the whole pitch of the solarcity/tesla solar tiles + power wall a decade or more ago.

I thought it was a novel idea when I heard about it.

also

Titanic Sinks Four Hours After Hitting Iceberg