The Truth About Tesla's Charging Stations

Alex L. Dykes
by Alex L. Dykes
the truth about teslas charging stations

Tesla has officially launched their long-awaited “Supercharging” network last night to a star-studded crowd in Southern California. (We assume it was star-studded since our invitation got lost in the mail.) The EV network promises to enable Model S and Model X owners to charge 150 miles of range in 30 minutes. What about your Roadster? Sorry, you aren’t invited to this charging party. Have a Tesla and a LEAF? You’ll have to be satisfied with separate but equal charging facilities as the Tesla proprietary charging connector restricts access to Tesla shoppers only. Is this class warfare or do we parallel the computer industry where connectors come and go with the seasons?

What’s the big deal with charging? Let’s go over the Model S’s charging time chart and you’ll understand. From a regular 120V wall outlet the Model S will gain 4-5 miles per hour of charging and consumes about the same amount of power as a space heater. Charging at 41 amps, the car gains 31 miles per hour and consumes as much power as TWO average electric clothes dryers. Charging at 81 amps (a service that many homes with older wiring or smaller services cannot support) the Model S gains 62 miles an hour and consumes more power than an average home’s A/C, dryer, washer, stove, oven, lights and small appliances put together. With a range of 300 miles and a 10 hour charge time at the 41A rate, it’s easy to see why fast charging stations are appealing. Tesla’s Supercharger’s specs are yet to be revealed, but by the numbers it is apparent the system is delivering a massive 90kWh charge which is likely 440V DC at around 200A. An hour of charging at that rate is 70% of the power that my home uses in an entire month.

Is this a Tesla issue? No, it’s an EV issue. If you expect your EV to drive like a regular car, modern EVs are a delight. If you expect your EV to refuel like a regular car, we’ve hit a snag. But it’s more complex than that, you see, only three of the four Model S trims support DC fast charging and the only other EVs on the market with a DC charge port are the Nissan Leaf and Mitsubishi i-MiEV. Except they don’t use the same connector or the same standard. Oops. Adding more complications to the mix are the EVs with no DC charge connector like the RAV4 EV, Volt, Prius Plug-In, Accord Plug-In, Focus, Active E and Coda while the new Chevy Spark is rumored to début a third standard: the SAE combo plug.

Of course, if you think of your car like you think of your cell phone, this makes sense as the phone you bought last year wont use the same charger as the phone you buy today. If you think of this in car terms however it’s like buying a new car and finding out that most of the gas stations have a nozzle that won’t fit your car.

Back to those Tesla charging stations. Tesla opened the first four in Southern California and announced two more stations will go online in October with stations in Las Vegas, Northern California and Oregon by summer 2013 with the 100 station network being complete by 2015. If that network sounds familiar then it should, because the recent settlement in the California vs NRG lawsuit means there will be 200 new CHAdeMO stations in California over the same time frame in addition to the 8 already installed and the 75 commercial stations planned or under construction. It isn’t just California on the CHAdeMO bandwagon however, the Department of Energy claims there are over 113 CHAdeMO stations in the USA and a 1,200+ unit installed base in Japan.

What does this mean to Tesla owners? Until Tesla creates a CHAdeMO to Tesla charging adapter cable (much like they have a J1772 to Tesla cable for use at public AC charging stations), Tesla owners will be restricted to regular AC charging or the smaller Tesla only charging network. On the flip side, Tesla is promising the Tesla charging stations will be free to Tesla owners, positioned next to trendy restaurants and you won’t have to mix with the Leaf owning rabble. You can also feel superior because Tesla’s newer standard charges 80% faster than the 50kWh CHAdeMO connector.

What does this mean to LEAF and i-MiEV owners? It means this is just the beginning of a standards battle. If you bought an EV before this raft of new J1772-connector-toting models, you know what I’m talking about. While CHAdeMO has the lead now, depending on what standard the rest of the industry supports this could change rapidly.

What about the rest of us? If we continue to build more battery electric vehicles and continue to develop batteries that are more and more power dense, you can expect even the snazzy Tesla charging connector to be outdated on a few years. If you expect an EV SUV to deliver 300 miles of electric range, AWD, decent performance, mild off-road ability and Range Rover quality luxury trappings, then expect it to have a battery that is 50-100% larger than the Model S’ massive 85kWh pack. This means you have to either take all the charging rates and nearly double them, or you have to develop a charging method that charges 50-100% faster to keep the same performance.

Of course, just like LEAF owners experience battery degradation caused by repeated use of DC quick charge stations, Tesla owners should be mindful that batteries don’t last forever and the faster you charge them the shorter their life will be.

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  • Friends in high places Friends in high places on Mar 08, 2013

    I saw this and had to pass it on: I "plan" to date model Kate Upon... which pretty much means it is not going to happen. This is ultimate spin from Tesla because they screwed the pooch and nobody wants a Tesla, nobody wants Solar City panels and Space X rockets keep failing so Musk is freaking out and traded some BS warrants with DOE to make this cover-up announcement which means totally nothing. Nobody wants to be seen driving a Tesla, it is the most tainted car on earth and the poster car of corruption. What means something is that any real car company sells 100,000 cars of each model and usually 400,000, or more cars. Tesla has only sold a few hundred to its own investors as fake shill customers after a decade of trying and nearly a billion dollars of free tax money... Taxpayers should call their Senator today and demand to their elected representative that BILLIONAIRE Musk pay the money back NOW and get off the taxpayers teat. FAIL! FAIL! FAIL!

    • Mattcoop Mattcoop on Dec 31, 2013

      Hey, Friends in High Places... did you know that all US auto companies are on the dole from the US government? Even Ford got a $5.9 billion dollar loan right before everyone else asked for a bail out... That is why Ford didn't need bail out money at the same time. Ford even asked for $11 billion but the government said it would only give them $5.9 billion. See http://www.forbes.com/sites/joannmuller/2011/09/19/ford-looks-hypocritcal-in-new-anti-bailout-commercial/ if you wonder if I am telling the truth... I am a Republican.... and I don't like any far right or far left ignorance or hypocrites.... I am not perfect and will admit if I error.

  • Chaparral Chaparral on Mar 08, 2013

    They've sold and delivered 13,000 Tesla Model S's already. Many "real car companies" have never built 100,000 of any model; the Tesla S is well on its way to that.

  • MaintenanceCosts We hear endlessly from the usual suspects about the scenarios where EVs don't work as well as gas cars. We never hear the opposite side of the coin. From an EV owner (since 2019) who has a second EV reserved, here are a few points the "I road trip 1000 miles every day" crowd won't tell you about:[list][*]When you have a convenient charging situation, EV fueling is more convenient than a gas car. There is no stopping at gas stations and you start every day with a full tank.[/*][*]Where there are no-idling rules (school pickup/dropoff, lines for ferries or services, city loading, whatever else) you can keep warm or cool to your heart's content in your EV.[/*][*]In the cold, EVs will give you heat from the second you turn them on.[/*][*]EVs don't care one bit if you use them for tons of very short trips. Their mechanicals don't need to boil off condensation. (Just tonight, I used my EV to drive six blocks, because it was 31 degrees and raining, and walking would have been unpleasant.)[/*][*]EVs don't stink and don't make you breathe carcinogens on cold start.[/*][*]EV maintenance is much less frequent and much cheaper, eliminating almost all items having to do with engine, transmission, or brakes in a gas car. In most EVs the maintenance schedule consists of battery coolant changes and tire maintenance.[/*][*]You can accelerate fast in EVs without noisily attracting the attention of the cops and every passerby on the street.[/*][/list]
  • MaintenanceCosts Still can't get a RAV4 Prime for love or money. Availability of normal hybrid RAV4s and Highlanders is only slightly better. At least around here I think Toyota could sell twice the number of vehicles that they are actually bringing in at the moment.
  • Tree Trunk Been in the market for a new Highlander Hybrid, it is sold out with order time of 6 months plus. Probably would have bit the bullet if it was not for the dealers the refuse to take an order but instead want to sell from allotment whether it fits or not and at thousands over MRSP.
  • AKHusky The expense argument is nonsense. My mach e was $42k after tax credit. Basically the same as similarly equipped edge. And it completely ignores that the best selling vehicles are Rams, F150s, and Silverados, all more expensive that a bolt, MAch e or ID4. As an owner, I'd say they are still in second car territory for most places in the country.
  • Johnster I live in a red state and I see quite a few EVs being purchased by conservative, upper-class Republicans (many of them Trump-supporters). I suspect that it is a way for them to flaunt their wealth and that, over time, the preference for EVs will trickle down to less well-off Republicans.
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