The cost of electricity is probably less than $5, plus the time they spend cleaning the car for the next person they can get to 80% charge
Other than that, you're going to have multiple hours of downtime where that car is not making you money.
The cost of gas isn't $7.50/ga either, especially for a corporate account the size of Hertz. Doesn't mean they won't charge you that, though.
I assume you’ll eventually see a $50 “recharge” plus electrical costs marked up 100%.
Or of course, you could just pre-pay and sign up for the $50 program and return it “empty”.
When you return a ICE car partially empty someone has to either bring gas to the vehicle or drive the vehicle to a pump.
Even though this is probably on-site it is very labor intensive and most rental places are pretty low staff. I could see future EV ones being entirely self service.
Anyway an EV can just be charged where you park assuming they wire each spot with an EV charger which I think makes sense since doing an n+1 charger is probably not much more.
I think the you will just pay whatever the normal charger electricity price would be.
Have you been to a rental car company lately? Most don't give the impression of being flush with cash. In order to get the best charging speed and turn your cars around, do you see them laying out $100K per vehicle/slot?
Otherwise you don’t need to have superchargers, you can just use a normal charger which is a few hundreds dollars, probably less at the scale of Hertz.
In any case, I know that regular charger's are very simple they are really just glorified relays so it might make sense to use non-superchargers if they are actually much more expensive.
Sure most rental places aren't cash heavy ATM but they aren't the ones buying 100k Tesla vehicles.
So the time spent by a Hertz employee is 1 minute to plug and then unplug the car.
And if the car isn't fully charged and someone wants to rent it, they can either wait additional 30 minutes for full charge or get not-fully-charged car immediately and charge it at a later time.
Either way, it's effectively zero time and cost to Hertz.