6.8.2021

Vehicle-to-Grid (V2G): From buzzword to business case

Learn about the challenges, technologies and real-life applications of V2G
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Your questions from the webinar

Which cars currently feature bidirectional charging?

So far these are mostly Asian cars that use CHAdeMO. To our knowledge the following models support bidirectional charging:

  • Nissan e-NV200
  • Nissan Leaf
  • Mitsubishi i miev
  • Mitsubishi Outlander
  • Honda e

The common CCS standard does not yet support feedback but this could change with ISO 15118 and numerous car makers including Audi, Ford, Lucid, Tesla and Volkswagen have made announcements to support bidirectional charging in the future.

Will car manufacturers be required to offer bidirectional charging in the future?

It is difficult to predict future regulation. Given that most major car manufacturers have announced plans for bidirectional charging, we do expect wide support for bidirectional charging even without legal requirements.

Is battery degradation taken into account?

No, the project aims to maximize self sufficiency through bidirectional charging.

How do you expect the cost of bidirectional wallboxes to develop in the future?

At the moment the market is rather small as only few cars support bidirectional charging. With the required scale we expect the cost of bidirectional chargers to decrease substantially. Nevertheless, a premium compared to unidirectional charger will – most likely – remain.

What's the impact of bidirectional charging on a car's battery?

Additional charging cycles will reduce the lifetime of a battery. The exact impact, however, depends on a whole range of factors as various studies have found (see this for example). Nontheless, we do expect the benefits of bidirectional charging to outweigh the cost of a shortened battery lifetime.

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