Bidirectional charging will soon be a feature available in all new Volkswagen electric models with a 77 kWh battery and operating system ID. Software 3.5 or higher.
The news, officially announced by the Wolfsburg-based company - on the occasion of the launch of this feature in the Stenberg residential complex in Hudiksvall, Sweden - is of particular importance because the new technology transforms electric cars into energy accumulators when necessary.
The pilot project, which was launched in cooperation with HagerEnergy GmbH in Sweden, provides the Vehicle to Home function in many models of the ID family, which - as demonstrated by the system installed in the Stenberg residential complex - serves to complement the advantages of a photovoltaic system and the ability to cover most household consumption.
"We are actively shaping the energy transition with products and services focused on the electric car," said Imelda Labbé, member of the Volkswagen Board of Management with responsibility for sales, marketing and after-sales service, "and with the bidirectional charging function now available, we have adapted a new service offering to the needs of our customers."
"Not only can they save on energy costs, but they also make an important contribution to the sustainable use of energy," said Labbé, anticipating that Volkswagen will also be able to activate the bidirectional charging function in vehicles that have already been delivered as soon as they have also received the ID. Software 3.5 via a Cloud update.
Thanks to the high storage capacity in the vehicle's battery, the consumption of the home can be fed with the energy produced by the photovoltaic system even when its efficiency is close to zero, such as on cloudy days or after sunset. This means that customers can decide for themselves whether to draw energy from the public grid or use self-generated electricity that has previously been stored in the vehicle's battery.
Smart charging also serves to stabilize the electricity grid and - by choosing the cheapest tariffs chosen through smart algorithms - allow the car to be charged when a lot of renewable energy is available and at a lower cost. Volkswagen's bidirectional charging is based on the CCS (Combined Charging System) standard, which is widely used in Europe, and uses the ISO 15118-2 standard for communication between electric vehicles and wallboxes. The vehicle connected to the home system is activated by the home electrical control unit when the storage system in the home requires additional energy.
As soon as the home storage system is recharged, the vehicle stops transferring power and goes into standby mode. Assuming an average electricity consumption of around 30 kWh in a house, the car can supply the domestic system for about two full days. And to ensure the availability of the car's mobility use, the battery cannot be dropped below 20% of the state of charge.
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