Can electricity from your car power your house? Not yet. But we are getting closer. 

V2G – vehicle to grid – is the vision of a future where electric vehicles can supply power back to the grid. Instead of only drawing electricity from the grid, EV batteries could support grid stability during sudden peaks in demand. 

An important milestone 

In the future, society’s EV fleet could become a resource for grid resilience. That is why V2G, with bidirectional energy flow, is an important component of the electrified society. 

We are not there yet. But in February, AmpSociety reached an important milestone by implementing Autocharge – a key component of the ISO 15118-2 standard. 

“With Autocharge, Amp5 can automatically identify the vehicle the moment the charging connector is plugged in. This means the user no longer needs to authenticate using an RFID tag or by logging into an app,” explains Henrik Fries, Head of Product at AmpSociety. 

The ISO standard is not supported by all vehicle brands and models. However, for vehicles that do support it, the simplicity of charging reaches a new level. Automatic identification has long been available for DC charging and is now becoming standard for AC charging as well. 

V2G requires collaboration across the ecosystem 

The development towards full V2G functionality is a multi-step journey that depends on alignment across several actors. Charging hardware, charging point operators, utilities and vehicle manufacturers all need to support the same standards. 

“The next development step for Amp5 is the implementation of ISO 15118-20, including Plug & Charge, scheduled for 1 January 2027. After that, our ambition is to enable V2G support in Amp5 – although today it appears that public parking environments may take longer to adopt full V2G functionality,” says Henrik Fries. 

Note: Not all vehicle manufacturers are following the same development path towards V2G. As a result, not all vehicles can yet utilise the new functionality. 

 

The technical development ladder towards a V2G future 

Step 0: The foundation – IEC 61851 

Global standard for analogue charging signalling. (Amp5 has supported this from the start.) 

Step 1: Backend operation – OCPP 1.6J 

Industry standard for communication between charger and CPO cloud platform. (Amp5 fully supported.) 

Step 2: Basic vehicle identification – ISO 15118-2 Autocharge 

Vehicle identified via MAC address. (Implemented in Amp5.) 

Step 3: Advanced backend – OCPP 2.0.1 

Enhanced protocol with encryption and support for smart charging. 

(Base framework implemented in Amp5 since 2025.) 

Step 4: Vehicle digital ID – ISO 15118-20, Plug & Charge 

(Scheduled for Amp5 on 1 January 2027.) 

Step 5: Full V2G 

Bidirectional energy transfer, enhanced security and comprehensive support for dynamic load balancing. (Timeline depends on vehicle market development.) 
 

For more information, please contact:

AmpSociety 
Henrik Fries, Head of product
Phone: +46 705 93 29 20 
Email: henrik.fries@ampsociety.com 

Press, AmpSociety 
Sofia Rafaa, Chief Marketing Officer 
Phone: +46 739 29 99 20
Email: sofia.rafaa@ampsociety.com