Energy network operators have launched a consultation to gather views on changing the lower limit of the voltage standard across distribution networks, currently set at 216V.
Led by Energy Networks Association’s (ENA) Engineering for the Future initiative, networks have proposed amending the lower limit to 207V, a four percent reduction in range limits.
The connection of multiple low carbon technologies (LCT), such as domestic solar generation and electric vehicle chargers, to the grid from a single location can lead to over-voltage, which can cause household and commercial equipment to shut down when protective limits are reached.
This proposed change to the lower limit would give networks a greater scope to operate in, ensuring customers can continue to access clean, affordable and resilient energy while adapting their homes to make more use of LCTs.
The proposed change will not lead to an interruption power supply for customers and networks will continue to monitor voltage levels so that appliances keep running smoothly.
Together, ENA and network operators have engaged with industry stakeholders, customers and experts to make sure any reform to the technical regulation governing voltage limits is safe and effective.
Lawrence Slade, Chief Executive at Energy Networks Association, said, “The current voltage limits, established in 1995, were set conservatively high to ensure all customers received a consistent level of service across the whole network. Since then, technology has changed and more domestic low carbon generation and low carbon technologies have connected to our networks.
“Operators need the flexibility to adapt, including by reducing the voltage limits. At this stage in the process, we’re keen to listen to all stakeholders to ensure the proposals we are finalising after the consultation are effective for everyone.”
The managed reform coincides with historic levels of investment in transforming the grid, over £100bn, that both distribution and transmission network operators will make over the coming years.
The consultation runs until the 22 of February and is available on the ENA website.
