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Innlegg:All measuring instruments used for financial settlement in trade and industry – for example, scales, fuel dispensers, and water meters – are subject to supervision.
From 2026, Justervesenet will supervise charging stations for electric vehicles. Initially, this will apply to DC fast chargers. What is tested is the total energy delivered to the vehicle, measured in kilowatt-hours (kWh). This is done to ensure that consumers take part in fair trade and to safeguard the integrity of the industry.
With modern equipment and good conditions for monitoring charging installations, the industry is well positioned to continue its good work on safe and fair trade. Through surveillance, guidance, and development, Justervesenet will do its utmost to ensure that consumers continue to feel confident when charging their vehicles.
Surveillance of charging stations follows a risk-based approach. Inspections will be carried out based on tips from the public, spot checks, and experience from previous controls.
Metrological requirements for charging stations are set out in the Regulation on Requirements for Electricity Meters. From 1 January 2025, all new meters sold must comply with the Measuring Instruments Directive (MID). It is specified that electricity meters used to measure electricity supplied to electric vehicles for commercial purposes, but sold before 1 January 2025, may be used without conformity assessment. The requirement does not apply retroactively.
The electricity meter regulation sets requirements for meter accuracy regardless of whether a conformity assessment exists.
To carry out inspections, Justervesenet must bring equipment of considerable size, which is mounted on a trailer. As a result, Justervesenet takes up some space during inspections. To minimize inconvenience, we aim to complete inspections as quickly and efficiently as possible. Inspections are mainly carried out during normal working hours, and we seek to avoid peak hours and periods of high activity at charging stations to reduce disruption.
Testing of charging stations is performed using a Mobile Battery Simulator (MBS) and a measuring instrument. The measuring instrument is placed between the MBS and the charging station. It is regularly calibrated by Justervesenet and is traceable to the SI system. The instrument measures, among other things, current and voltage, allowing it to calculate the energy delivered. By comparing this value with the value stated by the charging station, we can assess compliance with the requirements set out in the electricity meter regulation.
The MBS allows us to simulate a vehicle with various specifications, enabling precise control of current and voltage within the ranges we want to examine.
The Norwegian Metrology Service offers on-request verification as one of our services. As a neutral third party, we can carry out verification and in-use inspections and issue documentation. We have the equipment and expertise to help your enterprise meet the requirements for measurements.
Electricity meters installed in households must undergo conformity assessment in accordance with the Electricity Metering Regulation. The metrological requirements for the meters are set out in the Regulation on Requirements for Electricity Meters (elmålerforskriften). It is the grid company (not the electricity supplier) that is responsible for ensuring that the meter complies with the regulation. The Norwegian Metrology Service supervises that grid companies have adequate routines for conducting random checks of the different types of electricity meters in use.
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64 84 84 84
E-mail:
postmottak@justervesenet.no
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