Voltage changes will differ from site to site depending on when and how customers use their electricity. For example, your neighbour might have an appliance which needs more electricity to power it than what you may have at your property. Or you might have some neighbours which feed solar into the wires in your street. This impacts the power flow and causes differences in your local network.
We will be keeping voltage levels on the networks side within our regulated limits, which are within a range of 216 and 253 volts.