Charging By Amount Of Electricity Used Instead Of By The Hour
What was once free is about to cost a lot of money with the public charge model about to turn on the fees. While, it is difficult for any business to stay afloat during a recession, charging expensive fees certainly seems like a recipe for disaster.
From Free Charging To Expensive. Some of you have noticed that the free public system is slowly going away and is replaced with hefty prices. Most electric cars, the Nissan Leaf and Mitsubishi i MiEV have a 3.3kW on-board charger. If you have the newer Ford Focus electric or Coda’s EV, the charger jumps to 6.6. If you happen to have a Tesla Model S, then your charger handles 10 kW, although to be fair, J1772 won't allow 10 kW since most public stations are capped at 240 volts with 30 amps, which gives you 7.2 kw. What does this mean? The higher the charger rate is, the faster you can charge. And therein lies the rub, public charge stations want to charge you by the hour, not how much electricity you are consuming.
Trickle To Gulp Charging. To put things into perspective, a Nissan Leaf or Mitsubishi i MiEV owner would have to pay $2 an hour using a slow 3.3 kW charger. However a Ford Focus Electric or Coda driver would spend the same amount a twice as fast 6.6 charger. That means the Ford and Coda would charge twice as much electricity for the same $2 an hour i MiEV or Leaf. $2 an hour for the Tesla driver with its 10 kW charger becomes very advantageous.
To give you an even clearer idea, a 3.3 kW charger would make public charging cost you 60 cents at this rate. A 6.6 kW charger brings it down to 30 cents, maybe 25 for the Tesla Model S. Obviously, residential electric rates are cheaper, varying from 3 cents to 25 per kWh. In other words, a Leaf or i MiEV owner would pay 20 times more charging in a public place than at home, and 10 times as much for a Focus electric or Coda.
In terms of gasoline, the point becomes even more ridiculous. Full price rate for a 3.3 kW charger at $2 an hour is the equivalent of a 28-mpg gasoline car. Mark Williams, an air pollution specialist with the California Air Resources Board CARB calculates on GreenCarReport that the eventual $10,000 replacement of a battery pack at today’s price after 100,000 miles makes your per-mile cost 10 cents. This effectively means Leaf and i MiEV owners would pay $3.20 an hour for the 12 miles, the equivalent of a 15-mpg gasoline vehicle. Well, you get the point.