One thing that wasn't mentioned in the announcement was a plan for updating the state's infrastructure so that it will be able to supply the power needed by all of these new electric vehicles. Apparently, just forcing people to purchase EVs though regulation will somehow overhaul our entire power transmission system so that the necessary electrical power can be distributed to electrical refueling stations that someone else will build. Likely not Big Oil installing charging stations at every one of their gasoline stations, though. 
I keep hearing such, but I don't buy into it all that much.
Most people drive less than 40 miles per day. The time to charge can be set and the one hour it takes to charge at 0200 hrs or so for most people will be a lot less current than we use during our peak times as it is. The current can also be set, such as draw only a few amps for a longer time. And by then, it will probably be automatic by using the web, changing the time to charge different EVs at different charge rates at different times in different areas. With a way to override it, perhaps with a very small fee.
I think the BIG mistake they make in these estimates is that everybody will be getting a full charge. That will be the very rare exception. How many people drive 300 miles per day all that often?
I only see EV charging as a problem if everybody is charging at the same time during the day. I have my Tesla set to start a charge at 0030 hrs. And hour earlier in Reno. It uses the GPS so different areas can have different charge times automatically after only being set once per location. And new location is instant charging unless set differently.
PG&E as well as NV Energy drops their rate for those who charge during the low usage times, but different areas have slightly different times to start the lower rate charge. The Tesla "remembers" the locations.
The Tesla uses the GPS for just about everything possible. Such as if I put in my mirrors once to get into a very tight spot. The next time I get to that same location, I touch nothing at all and the mirrors go in automatically. Even the garage door opener can do such. Just drive, and the garage door opens when you get close to it after it is once set. No need to press a button except the very first time. It's automatic and can be set to do such for three different houses, which is great for me, as I have three houses. All these features can be turned off, if not wanted, of course.
Anyway, I just don't see this big EV charging issue in the future that we keep on hearing about.
-Don- Auburn, CA