The MID (Measuring Instruments Directive) is a European directive that governs the certification of measuring instruments, including AC and DC electricity meters.
It guarantees the accuracy, reliability, and legal compliance of measurements used for commercial purposes. For Electric Vehicle charging infrastructure, this standard is particularly critical for DC meters, which directly measure the energy supplied in Direct Current to vehicle batteries. MID certification ensures that these meters meet strict performance criteria, allowing for fair and transparent billing for end-users. It also facilitates the traceability and monitoring of electricity consumption, a major issue in managing electric fleets and optimising energy costs.
The MID thus contributes to confidence in public charging systems and the secure deployment of electrical infrastructure.