Stay tuned for the latest updates on our mission to achieve interoperability in bidirectional charging worldwide!

This is the sixth Task 53 newsletter! (If you have missed the content of the previous ones, check out our archive).

Our newsletter is scheduled for every two months. You will receive Nr. 7 by the middle of December.

Plug into the pulse of progress with the October Newsletter Edition from Task 53. This update will inform you about the following topics:

1. Get your Membership 
2. New Partners and Countries Welcome
3. CharIn and Task 53: Two Stages to One Goal
4. Second in-person Workshop ''Preparing for Interoperability Testing''
5. Working Groups of Task 53
6. News from North America 
7. Invitation V2G Leaders Forum Brussels

Get your membership

Don’t miss out this opportunity and make sure to join Task 53 as a member by November 14th before the crucial V2G Leaders Event in Brussels.  This is a prime opportunity to get involved and contribute to the global V2G development.

New Partners, New Countries

We are very pleased to welcome the following new industrial partners, laboratories and non profit organizations since our last newsletter in May:

By clicking on the members logo you can visit their website.

We are very happy to announce the following new countries that joined forces with Task 53. If your company or institution is located in one of these countries, you have a reduced participation fee. Please contact us for further information.

If you want to see the list of all partners, please visit our website task53.org.

CharIn and Task 53: Two Stages to One Goal

If you have wondered what the difference between Task 53 testing and the October Testival of CharIn are, find below the explanation:

CharIN: Leads Bilateral BiDi Interoperability Testing: ealy-stage, development-focused validation between one EV and one EVSE – enabling debugging and faster technical readiness.

Task 53: Multi-Party BiDi Interoperability Testing: System-wide validation across EVs, charging stations, and the grid – with a focus on market readiness and V2G scalability.

(Image: Visualisation of CharIn and Task 53 difference)

CharIN offers a 50% discount to Task 53 partners willing to participate in the public day on October 8th 2025. Patrick Eugster and Tillman Laux from Task 53 will be there, so reach out to them for a catch up.

If interested to visit the event, contact us for the discount code.

From November 4 to 6, 2025 our second in-person Workshop will be held at the FHNW in Brugg, Switzerland.

In addition to the sessions, participants will join an excursion to Swissgrid, the Swiss Transmission System Operator (TSO).Together with all our partners, we’ll prepare for the upcoming testing phase, align on the specific plan, and define the analyses to be carried out. 

This workshop is exclusive to members. If you’re not yet part of the group, there is a chance: become a member and secure your spot! 

The workshop will also be accessible online for those who are not able to travel. Find the agenda and program below.

Working Groups of Task 53

Bidirectional Basic Working Group

This group is led by Tillmann Laux and Task 53 core team, and focuses on clarifying the roadmap draft, reviewing the test case template from the Data Handling Working Group, and collecting or creating test cases, including a discussion on priorities for Sprint 1. In parallel, industry updates on product readiness were collected, presented, and discussed.

Bidirectional Basic Working Group

This group began with several industry presentations covering the general setup of AC bidirectional charging and the details of ISO 15118-20 Amendment 1. Discussions centered on specific standards, concluding with a focus on testing and use cases.

Data Handling and Confidentiality Working Group

Led by Sam Thurston (Argonne National Lab) and Harald Scholz (JRC Ispra) together with the Task 53 Core Team, this group reviewed and accepted the test case template suggested by Sam Thurston. Work was finalized on the Data Dissemination and Governance policies as well as the Testing Results Template. The group also focused on refining the longlist of standards provided by CharIN and addressed the important topic of cybersecurity, including different types of threats and security steps.

News from North America

Bjoern recently represented Task 53 at the VGIC's annual EVolve 2025 event in Berkeley, held from September 24-25, 2025.

Key themes emphasized that interoperability is critical to V2G success, supported by advances in onboard inverter technology that are driving down costs for AC V2G.

Customer simplicity and positive experiences were seen as essential, alongside cross-industry collaboration between utilities, OEMs, and aggregators. With billions in potential system savings, regulatory innovation, through new cost allocation methods and performance-based frameworks, was identified as a cornerstone for unlocking full value.

On the technical side, GM and Rivian shared progress toward a $500 target for bidirectional AC home charging equipment. Rivian’s 500‑amp design enables efficient V2G operation, while experts noted challenges such as ripple currents in DC systems and the need for buffer batteries in UPS-like setups. Onboard AC chargers were highlighted as efficient, cost-competitive solutions with high future potential.

Invitation - V2G Leaders Summit 2025 

On November 20, Brussels hosts the inaugural V2G Leaders Summit: a high-level platform supported by the EU Commission to accelerate Vehicle-to-Grid innovation. Join policymakers, industry leaders, and Task 53 peers in shaping the future of energy and mobility.

As a partner, you’ll help shape strategic conversations, showcase your leadership, and connect with key EU decision-makers and innovators.

Secure your place: Annabell Schlensog | LHI AG 

Feedback Submission

If you have any comment, critique, suggestion, question referring to this Newsletter and/or Task 53: Please let us know.

Thank you for your continued support and participation in Task 53. Together, we are contributing to a more sustainable and interconnected future for electric vehicles and the energy systems.

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