The calibration law rules an old right for consumer protection. What is standard for energy metering in the household, is a particular challenge at the charging station. Here, the German term Eichrecht is often being used. We are experts in implementing the calibration law for electric car charging.

Why is Eichrecht a problem?

The beginning of the EV charging market was a wild period. All companies focused on getting chargers onto the market. The main point was to form the young technology. And to gain compatibility between all kinds of charger models and all available electric cars.

Therefore it is only understandable, that only few of us focused on things like calibration law. To clarify, every upcoming issue was discussed. And the engineers of the industry tried to solve it. But not all were solvable at the time.

For example, we, as an industry, were not able to conform to the calibration law. The requirements just were not fitting the EV charging market.

It was not possible to conform to the requirements from the calibration law, when the EV charging market started. Simon Schilling

Calibration law and EV charging today

Meanwhile, the calibration law, also known under the German term Eichrecht can complied to. At least for Germany which was the first country to claim the topic. The requirements are clear and first charging hardware is available. Subsequently the roll-out is ongoing.

We even have the Open Smart Metering Format (OCMF), a data format dedicated for energy meter readings in EV charging, available.

However, there is more to it. The backend systems and roaming networks, the invoice processes and products have to comply, too. In other words, calibration law is not only a topic for the charging hardware.

Our contribution

We supported multiple projects around the implementation of the calibration law. In the name of our customer SMATRICS we lead the “Roaming Working Group” of the SAFE Association. Together with other industry leaders, SMATRICS contributed to the first publication “Best Practices: Smart Meter Handling and Roaming“.

We were participating in the standardization work groups for the calibration law application DKE/GAK 461.0.21 and for the secure RFID card DKE/AK 353.0.8.

We supported our customers on calibration law for electric car charging through projects like EV Calibrated Metering Integration and Product Owner CPMS.

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