One look at the summer load curve of virtually ANY utility shows this study is complete BS. There was barely enough capacity to meet load in a LOT of parts of the country during the peak afternoon hours. Why would they want people to add the burden of charging cars at that time frame?
Much better to do so at night when the demand is less.
Now, come winter, those demand curves are significantly different, with very cold temperatures bringing in a demand that peaks in the first couple of hours of daylight as the need for heat is added to the normal load increases associated with people getting up to make coffee and such. So in that time frame, it might make sense to charge in the afternoon when the heating load is less, but before evening when the sun goes down and lighting/cooking demand rises again.
this talk of when you should charge or more likely in the future when you are ALLOWED to charge
compare this to gas vehicles that can only go to the gas station at specific times
what a headache
this is all nonsense