Thanks again for all of your responses guys.
After receiving more information from the client, he claims that since reducing the voltage at two substations by 5% in May/June, he's realised energy savings of £10k at each substation.
The buildings being fed by the substations are office...
Can anyone advise me on the subject of end-users operating their commercial and industrial buildings at a reduced site voltage to reduce energy consumption?
I can understand the potential savings on offer by reducing the supply voltage to resistive type loads (within mfr's tolerances), but for...