VPhase plc (LSE: VPHA) is incorporated in the UK and was admitted to AIM on 27 September 2007 and is a subsidiary of Energetix Group plc (LSE: EGX). VPhase is developing a range of energy saving products based upon voltage reduction and stabilisation.
What is voltage control?
European (and UK) statutory limits on domestic voltage allow electricity supply to fluctuate between 207V and 253V (230V ±10%). For the majority of properties in the UK the supply voltage often fluctuates between 240V and 250V. It has been demonstrated that reducing supply voltage at properties saves energy. Consuming less energy reduces household bills and reduces carbon emissions from the power generation industry.
Voltage control is controlling and reducing the incoming voltage to a property to a stabilised set point (within statutory limits) regardless of the level of the incoming supply voltage.
Simple voltage reduction for energy saving has been applied in industrial applications for many years where controls at private sub stations can be adjusted or fixed ratio auto-transformers can be employed.
For such industrial applications site voltage surveys have to be undertaken to ensure that the fixed ratio voltage reduction does not reduce the supply voltage to a level below statutory limits. Site voltage surveys are not appropriate for domestic applications due to the associated cost.