To ask Her Majesty's Government what assessment they have made of (1) the frequency with which Distribution Network Operators supply power outside the allowed fluctuations, and (2) the effects of such fluctuations on the safety devices on Electric Vehicle charging points.
16 November 2021
The Electricity System Operator is responsible for keeping the overall frequency and voltage of the GB electricity network within the statutory limits and publishes annual data on system excursions. Conditions on the electricity distribution network, or internal wiring at a premises, can alter the voltage at a specific Electric Vehicle (EV) charging point. EV charging points are designed to operate over wide voltage and frequency ranges. They are also fitted with internal protective devices to limit damage should excursions exceed safe limits. Should any customers have concerns about voltage management at their premises, they can raise them with their Distribution Network Operator for investigation.