Touched upon in another thread, thought that it might be interesting to look at the "gas" station of the future.
I'll use the one that I worked my Gap year at, was pretty typical of a highish volume servo in the Nation's Capital.
Take surface area for a start...was about 2,000 square feet of driveway area and 1,500 of shop....sold about 4,500 gallons per day, about 400 customers.
Based on a Tesla Supercharge "dispenser", and using only a 50% "fill" of 20 minutes plus about 5 minutes of fapping around connecting and paying, and assuming that the guy in front of you isn't using the dispenser ahead for 75 minutes for a full charge and thus blocking your way...
400 customers, 25 minutes, and evenly distributed through the day...7 "dispensers" running 24/7...we served that 500 customers in 17 open hours, and had 8 pumps, so it's doable, and a match on the same size block of land...of course assuming that the customers arrive evenly throughout the 24 hour period, and there's no peak hour rush or anythinge like that.
120KW transfer rate per car 80% duty cycle (20 minues out of every 25), 7 chargers...Peak load for the chargers is 0.84MW, average 672KW...Daily power 16.1MWH discounting losses...about a quarter of the Blaney wind farm that a co-worker
puts out on the "average" day.
That's assuming that the service station is hard wired to the grid with zero storage.
But that's no use in a blackout, or leading up to a natural disaster, so lets assume some storage.
My old station had about 7-10 days of storage, underground, on the same footprint.
What's reasonable for the refueling station of the future ?
2 days maybe ?
Lets for giggles make it 1 day...clearly not enough for a decent storm ridethrough, but enough for peak shifting on the power bill....
1 day, 16MWh...that's 13.5% of the South Australian Tesla Battery that's been the much lauded project to save the state (8% of the state demand, available for 5% of the day)...
Make it 20% of the Ca Mira Loma (80MWh) facility, which takes up 1.5 acres...assume it's simply scalable, and they would need to find 13,000 square feet for the day's storage...