Information
Definition
Meter values are recorded readings from a charger or meter, such as energy delivered, power, voltage, current or session readings. It is normally considered alongside charge point management systems, OCPP support, firmware updates, reporting and remote diagnostics.
Why it matters
They support billing, diagnostics, reporting, load management and backend records for commercial charging operation. For UK users, it affects day-to-day operation, supportability, data access, interoperability and the long-term usefulness of the charger.
References
Standards and regulations
Open Charge Point Protocol
Open Charge Point Protocol (OCPP) is the open protocol used for communication between EV charge points and charging station management systems. It supports authorisation, transactions, remote monitoring, diagnostics, smart charging and interoperability between hardware and backend platforms.
MID
MID Meter
The Measuring Instruments Directive (MID) is the EU framework for placing regulated measuring instruments on the market, including active electrical energy meters used for trade. In EV charging it is relevant to EU market billing, kWh measurement and legal metrology requirements.
MIR
The Measuring Instruments Regulations 2016 (MIR) are the UK regulations covering legally controlled measuring instruments, including active electrical energy meters used for trade. In EV charging they are relevant where measured kWh values are used to calculate charges, payments or rewards.