Signed Meter Values (Eichrecht paper)

Signed Meter Values (Eichrecht paper)

The purpose of which is to provide consumers a way of validating the validity of chargeable measurand(s) (Wh, Time, etc), in compliance with applicable laws or regulations in different jurisdictions. Those include German Mess- & Eichrecht laws.

Full compliance with these laws can include requirements that are out of scope for this whitepaper, which include:

• Unambiguously identifying a customer
• Handling of ad-hoc payments
• Handling of signed meter data between Charging Station Management System and Mobility Service Provider
• How the Charge Station Operator (CSO/CPO) or Mobility Operator must provide the details (including transaction IDs, public keys etc) to customers
• How the customer may verify the correctness of the measured/billable values

For more information on the out-of-scope elements, refer to guidance on local laws for the jurisdiction of interest. This whitepaper is limited to the transport of signed meter values between the Charging Station and the Charging Station Management System.

The measurements exchanged via OCPP can become part of Charge Detail Records (CDRs) that are exchanged via OCPI or a similar protocol, but the CDR exchange itself via those protocols is out of scope for this document.

The whitepaper explains important concepts, then focuses on the implementation for both OCPP 1.6 and the OCPP 2.x series.