Good question!
When you charge an electric vehicle, every kilowatt hour matters. That’s why, across Europe, accuracy in energy measurement isn’t just a nice to have; it’s a legal requirement.
What Is MID?
MID stands for Measuring Instruments Directive, a European standard designed to ensure that devices measuring electricity, gas, or water are accurate, consistent, and trustworthy.
In short, it protects the consumer by making sure every unit of energy you pay for, or get reimbursed for, is measured fairly. A MID certified meter has been independently tested to guarantee long term accuracy, even after years of daily use.
For EV chargers, that means the internal energy meter must comply with strict standards, proving it can measure the power delivered to your vehicle precisely and reliably.
Why MID Certification Matters for EV Charging
As electric mobility expands, so does the importance of fair billing. If a driver pays for 20 kWh, they expect exactly 20 kWh to be delivered, no more, no less.
- Legal Billing – Only MID certified meters can be used for resale of energy or reimbursement.
- Trust – It assures drivers that the figures shown on their charger or app are accurate and transparent.
- Compliance – In countries like Germany, meters must maintain calibration accuracy for up to eight years before recertification.
Without MID certification, operators face serious limitations. They cannot legally charge per kWh, meaning tariffs may need to be time based or flat rate, both less fair to the user and less aligned with energy efficiency. It also limits businesses offering workplace or shared charging from claiming accurate reimbursement for energy costs.
Why the NexBlue Range Includes MID Products
Accuracy and accountability are central to NexBlue’s mission. Whether at home, in a business, or across a fleet, we believe people deserve confidence in what they are paying for, and in what they are paid back.
For us, MID certification is not just a technical tick box. It is part of our commitment to transparency, safety, and trust across every charging experience. Our Max products all feature MID certified meters, alongside a display on the side of the unit. This allows both Users and Installers verify the charger is measuring as it should be.
Because in EV charging, precision is not optional, it is part of being fair.
The Future of Metering: Preparing for Vehicle to Grid (V2G)
As the EV landscape evolves, the role of metering is set to become even more important. The next generation of charging is not just about drawing energy, it is about giving it back.
With Vehicle to Grid (V2G) technology, electric vehicles can act as mobile energy storage units, returning power to the grid or local building network when demand is high. In this scenario, energy measurement becomes a two way process, tracking what goes into the vehicle and what flows back out.
To make this work fairly and transparently, every exchange of energy must be measured with the same accuracy and accountability as traditional charging. MID certified metering ensures that:
- Drivers are reimbursed correctly for the energy they return to the grid.
- Utilities can trust the accuracy of energy data for grid balancing and billing.
- Regulators can maintain clear standards for fair energy trading between vehicles and infrastructure.
In other words, the same precision that protects today’s EV driver will power tomorrow’s energy ecosystem. Accurate metering is not just a requirement, it is the foundation of a smarter, more dynamic grid.
Be Current. Always Forward
At NexBlue, MID certification is built into our DNA. From ensuring fair charging today to enabling intelligent energy sharing tomorrow, we see accurate metering as a promise; one that keeps every connection honest, every transaction transparent, and every charge future ready.