True, but all your math assumes that energy is used equally all 24 hours of the day. A large chunk of energy is consumed during the day, when the sun is shinning. Much less is used at night when the trains need to supply energy.
Getting rid of oil addiction doesn't solely mean replacing oil with wind and solar; it also means thinking rationally about why we need so much energy.
> Getting rid of oil addiction doesn't solely mean replacing oil with wind and solar; it also means thinking rationally about why we need so much energy.
The prominent people who say this sort of thing usually have enormous mansions with heated pools and fly private jets everywhere.
Would this smart grid require that people only ever wash clothes on days they don't work?