Martin Williams
Active Member
In response to 30kW Leaf's post:
Ten minutes is five times longer than two minutes (which it takes me to fill my ICE) That means to serve the same number of battery cars as ICEs needs five times the number of charging points as pumps, assuming equal mileage from battery vehicles as from an ICE car.
Five times 400kW is 2 MegaWatts. Now imagine a filling station with half a dozen pumps. If it goes electric, it will need 30 charging stations, and take 12 MegaWatts peak. This will require its own substation big enough to serve 2000 homes.
Unfortunately, electricity doesn't just pop up out of the ground under a charging point. Someone has to get it there, and that is likely to be expensive. If you wanted a 400kW charging point at your home, I guess you could have one, but it would probably cost more than the car to install the necessary infrastructure - cabling, transformers etc!
So far, the long charging times of today's batteries has disguised this problem, but it will become a lot more immediate if batteries get to be charged faster.
Ten minutes is five times longer than two minutes (which it takes me to fill my ICE) That means to serve the same number of battery cars as ICEs needs five times the number of charging points as pumps, assuming equal mileage from battery vehicles as from an ICE car.
Five times 400kW is 2 MegaWatts. Now imagine a filling station with half a dozen pumps. If it goes electric, it will need 30 charging stations, and take 12 MegaWatts peak. This will require its own substation big enough to serve 2000 homes.
Unfortunately, electricity doesn't just pop up out of the ground under a charging point. Someone has to get it there, and that is likely to be expensive. If you wanted a 400kW charging point at your home, I guess you could have one, but it would probably cost more than the car to install the necessary infrastructure - cabling, transformers etc!
So far, the long charging times of today's batteries has disguised this problem, but it will become a lot more immediate if batteries get to be charged faster.