The article outlines NIST’s ongoing effort to establish a reliable measurement chain for electric vehicle (EV) fast chargers using modern SI electrical standards, which are defined through fundamental quantum effects like the Josephson effect (for voltage), the quantum Hall effect (for resistance), and atomic clocks (for time). While not a quantum computing protocol, these quantum-based reference standards form the foundation of today’s most precise electrical measurements. Currently, this initiative is in the development phase: NIST’s EVSE Test Instrumentation Work Group is designing a new portable “transfer meter” that can first be calibrated against lab-grade quantum references and then used in the field to verify commercial chargers. A technical guidance document outlining calibration procedures is still under review and will be published shortly.
The transfer meter will bridge a key technical gap by accurately measuring real charging power while translating ultra-precise laboratory standards into rugged, everyday equipment, ensuring drivers are billed correctly and trust in EV infrastructure grows. In terms of quantum technologies, this work does not directly advance quantum computing but demonstrates how quantum-level measurement precision can be practically adapted for large-scale energy systems; the same high-accuracy calibration techniques could later support testing and quality control for emerging quantum hardware. Implementation is underway with no fixed completion date, as NIST prioritizes developing direct-current (DC) calibration methods for fast chargers and will release its final procedures as an official special publication in the near future.
Keywords: metrological traceability, quantum standards, Josephson effect
