Vehicle-to-grid charging - Tesla's competitive disadvantage?

Discussion in 'Tesla Charging' started by haroldrbuster, Jan 9, 2018.

?

Are you familiar with V2G (vehicle-to-grid) or bi-directional charging?

  1. Yes

    3 vote(s)
    75.0%
  2. No

    1 vote(s)
    25.0%
  3. Sounds familiar but I don't know much about the technology

    0 vote(s)
    0.0%
  1. haroldrbuster

    haroldrbuster New Member

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    San Francisco, CA
    Happy new year to all!

    Wanted to start off the year with a topic I have been thinking about. One topic I don't see to much discussion on is Tesla's involvement in V2G technology. Bi-directional charging is one of the huge benefits to EV penetration in the auto market - and is a big theme in the development of smart city infrastructure. Nissan has gotten some press with their announcement of V2G charging for the next-gen Leaf, but Tesla has been all but silent on the topic. My understanding is that V2G connectivity is very hard on lithium-ion batteries and would increase the rate at which the overall battery capacity decreases, so it would make sense why Tesla does not want to focus on that aspect of charging. Although lithium-ion batteries are becoming cheaper, Tesla has made it clear that they are not interested in swapping out old batteries for new.

    Additionally, JB Straubel has recently talked about how Tesla is planning on improving charging technology - but only the current one-way charging, and not bi-directional charging. Tesla already utilizes this technology with smart inverters in Tesla Energy systems, so I can't imagine they are not able to figure it out for cars (unless they have an incentive not to). My concern is - Tesla will be at a disadvantage if competitors offer V2G technology earlier to customers, as it puts more cash in the customers' pockets and lowers electricity bills (may make home charging more cost efficient). Every additional car Tesla manufactures without V2G technology will be incompatible with this infrastructure - are they banking on those cars being obsolete by the time this infrastructure is in place? I'll add a poll - curious to know how many people are familiar with this technology.

    What are your thoughts on how this technology may affect the company?

    Harry
     
  2. Dennis

    Dennis Moderator

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    The other thought would be that Tesla's Holistic approach with Solar Roof and PowerWalls will be a better advantage than V2G.
     
  3. zlymex

    zlymex New Member

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    China
    I bet Tesla won't implement V2G for cars with free supercharge enabled.
     
  4. fusionpowerEV

    fusionpowerEV New Member

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    Sep 16, 2017
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    Canberra, Australia
    Free supercharging should not be an issue - Tesla could easily control abuse if they wished.
    Their real concern is battery life and warranty considerations. Different chemistry is used in the Powerwall and the Tesla, optimised for each application. Tesla is way ahead of the pack in battery performance and cost. The temperature management of Tesla battery modules is indicative of the extent to which they go to optimise battery life and, in my opinion, they won't squander that advantage by facilitating V2G until they can do it without compromising battery life.
     
  5. zlymex

    zlymex New Member

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    Location:
    China
    I agree that Tesla can measure the amount of energy going to the grid and charge it accordingly. If not, people can earn profit by charging at superchargers and selling power to grid.

    And, battery degradation is another factor (which I also agree with). However, the amount of energy going to the grid can also be measured and thus be deducted from the degradation of the battery. There are other cases include driving in ludicrous mode and max battery power setting where there are warning messages of battery degradation but Tesla is difficult no control. After all, the situation in a V2G case (smooth output power, mild temperature, static) is expected to be better than discharging the battery while driving.
     

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