By on March 16, 2020

Volkswagen Group’s transition toward electric vehicles has been no secret. Since getting busted with software designed to defeat emissions testing five years ago, the manufacturer has trumpeted the merits of electrification at every opportunity. Still, some continue to wonder how an EV-dominant world will work, expressing concerns that peak charging hours could stress national energy grids past the breaking point.

One proposed solution is to use the connectivity available in modern cars to take power from the grid only when surplus energy is available, while feeding electricity back into it during peak draw hours. Michael Jost, VW’s head of product strategy, said this was something the automaker has been working on. 

According to Reuters, Volkswagen wants to lean into bilateral charging to use vehicle batteries as a secondary storage space. Basically, you would charge your car during the day (when solar energy is available) and share excess power back into the grid in the evenings (when demand is highest and renewable energy isn’t).

“By 2025 we will have 350 gigawatt hours worth of energy storage at our disposal through our electric car fleet. Between 2025 and 2030 this will grow to 1 terawatt hours worth of storage,” Jost explained. “That’s more energy than is currently generated by all the hydroelectric power stations in the world. We can guarantee that energy will be used and stored and this will be a new area of business.”

Reuters noted that Germany’s E.ON has been working with Japanese carmaker Nissan to develop “so-called vehicle-to-grid (V2G) services,” as well. In fact, Nissan already allows owners to share energy via the Leaf, though customers are required to own a home-charging system that allows for this. Tesla also has its Powerwall/Powerpack systems that manage the best time to take and share energy, however, neither pull any electrons from the car’s battery.

Volkswagen could sell this as an option or simply charge a fee for the service, sharing any energy savings generated with the customer. Still, it’s not clear how the program will actually work. Jost never indicated that VW’s charging stations would be equipped for bilateral charging (though that would make sense), just that future automobiles would support it. Like so many updates on the industry’s latest technology, it’s a little vague for our tastes.

Last week, Jost was busy talking up a new software-based vehicle operating system intended to launch with the Euro-market ID.3 electric car later this year. The OS is supposed to continuously work with an array of on-board sensors to amass data the company can learn from to promote safety — supposedly ending all accidents by 2050. While this automatically gets our dander up about customer data privacy, it’s also woefully incomplete in concept. Automakers rarely explain how this stuff is supposed to work but are keen to suggest the end justifies the means. This is all being done in the service of safety or to help companies metamorphose into their perfect form — why and how are irrelevant. It just needs to be done swiftly, surrounded by buzz phrases.

“How quickly can data and algorithms improve? Our customers should benefit from deep learning every week, and every day. We are moving from being a device company to being a software company,” Jost said about the operating system.

The V2G battery system seems a little more grounded, with obvious practical applications. But we’ll need a clearer battle plan from VW before we start taking it completely seriously — even if there is a solid business case to be made. Too much of this tech talk is front-loaded, jumping straight from the initial concept to profit (à la the Underpants Gnomes from South Park). It would be nice to spend a little time with step two before deciding what value it actually possesses.

[Image: nrqemi/Shutterstock]

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5 Comments on “Volkswagen’s Making Big Promises About Electric Vehicles and the Energy Grid...”


  • avatar
    thornmark

    my experience w/ German cars is that their electrical systems are several grades below the Japanese

    just image the fun people will have owning (test driving) these all electric VW’s

  • avatar
    ToolGuy

    The ability to power the house from the vehicle (available in Japan) would be very nice to have. I would use it maybe an average of 4 hours a year [based on my typical frequency of power outages] to power ‘critical’ systems (fridge, freezer, internet) [but more some years and thus useful].

    As far as V2G, my power utility killed the financial incentive for this for now.

    There is probably a ‘dumb’ way to share power (deep discharges, additional ‘wear’ on the battery pack) and a ‘smarter’ way (top-off, cell rebalancing).

    • 0 avatar
      SCE to AUX

      4 hours a year might be all you should do.

      The lifespan of a lithium ion battery is measured in charge/discharge cycles, and I’m not interested in giving half of my car’s battery cycles to the grid. And since EV depreciation is directly related to the health of the battery, putting power back into the grid is money down the drain.

      Also, there is an underlying assumption that the utilities want this power back. They don’t. It is expensive and difficult to process incoming power from a gazillion sources, rather than simply manage the outgoing power from a few plants. The power must be clean and balanced, and you need equipment capable of putting your power back on the wire in a safe manner so that it can be used by someone else.

  • avatar

    Okay, how about this: I charge my Tesla at work for free and use this energy at home when come back from work.

    • 0 avatar
      downunder

      Then somebody (read beancounter) will say that because you are making an income from “our” power, we either charge you for it or reduce your salary. Then comes along the taxman and says that’s an income stream, show me the money!

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