The SoCal TOU-D-Prime rate for EV charging at night is $0.16/kWh. If this actually continue, you are going to see superchargers pretty full at night and morning.
I kind of wish this was permanent as this would avoid locals without home charging clogging up superchargers. This would especially be a big help for charging while on a road trip in the usual areas where there are few superchargers but lots of people without home charging: LA, Fresno, SD, and Bay Area. I think the huge price difference would incentivize most people without home charging to charge off peak while those on a road trip would be willing to pay the higher peak rates.
I dunno about you but PG&E has split charges for off peak like generation + delivery. So that $0.16/kwh is just part of it. The other part was $0.07/kwh so it ends up closer to $0.24 for me..... I can't wait for solar
Get a LOT of it. Trying to charge my 74kWh TM3 out of my 7kW system on any day that isn't in June-July is difficult
Does anyone know what the current Supercharger prices are in the East Bay? We are looking at placing in an order once we get approved for the CVAP, but want to calculate how much we could be saving compared to gas with my current car. I guess you can't see the prices unless you own the car already.
It’s usually 35 cents a kWh unless you charge off peak at a station with time of use rates. Realistically, the savings will probably be close to none in comparison to gasoline. The main data point I have to support this is that on road trips I usually spend on supercharging my Model 3 Performance what I’d normally spend in gas driving a 30 MPG car. If you’re comparing to a fuel efficient car like a Prius you actually would spend more money supercharging than gas. The only scenario where you’d come out ahead in savings compared to a gas car is charging at home with a favorable electricity rate.
I appreciate the info! I know it depends on the area you live, but do you happen to know what the average cost is when charging at home? My current car costs on average about $0.15/mile. From what you provided about superchargers, I calculated about $0.09/mile, and with the average electricity cost in CA being about $0.20/kWH, I came out with $0.05/mile.
Do not forget about cost of ownership over say 10 years, not only saving on gas prices but maintenance, and of course helping the environment.
Oh yeah of course! My current car is a WRX with about 73K miles, and I know I have some big maintenance costs coming up, so I want to trade it in before then. The car is definitely not environmentally friendly either with all my mods, so that will be another positive.
Without knowing a ton of specifics let me confirm your math here. If you say your current car costs an average $0.15/mile then working backwards from a 3.25 a gallon price that’s about 22 MPG or so. If you assume let’s say an average of 280 Wh/mi consumption on your new car that works out to about .35/(1/.280) which is close to your estimated $.09/mile (the answer is 10 cents per mile if you round). At a rate of $.20/kWh at home then it would be .20/(1/.280) which is close to your $0.05/mile your figuring (the answer is 6 cents per mile if you round). If your car gets around 22 MPG as I calculated then yes, you’ll definitely be saving on fueling costs.
Okay, thank you for confirming my calculations. My car gets about 20MPG and I used an estimated range of 325mi, because we were looking at a LR Model 3
Range should be calculated at 80% of that 325 for travel. You only charge to 100% when you know when you are leaving the next morning, set it to charge all the way up the night before. Stopping to supercharge to 100% will double the time you spend charging. Also, realize that you won't even charge to 80% while enroute, you'll just charge enough to get you comfortably to the next supercharger. Often that means you are 5-15 minutes charging before getting back on the road. I am regularly done charging before I am done peeing.
Not that I take a long time to pee, just giving a sense for what it'll be like to road trip with a charger instead of a pump.