Electrical equipment is designed to accept a wide range of input voltages about its nominal design centre. However, if the actual supply is higher than necessary the equipment will consume more power than needed and in many cases, equipment life is reduced, effectively increasing the cost of ownership. A 230V linear appliance operated at 240V will consume approximately 9% more energy than necessary. A voltage reduction within statutory limits can produce up to 25% (subject to loads) reduction in energy consumption and in addition will extend the life of many types of electrical apparatus. The reduction of the supply voltage to a controlled (site adjustable) level, allowing equipment to operate at optimum efficiency thus lowering power consumption, overall running and ownership costs.

Voltage reduction equipment that stabilises the voltage as well has obvious advantages over fixed ratio transformers, by providing additional energy savings through greater voltage reduction and more importantly, phase voltage balance and regulated output voltages.

Increasing demand and the deterioration of the utilities infrastructure, a stable supply voltage cannot be guaranteed. Utilities price increases are forecasted for the foreseeable future, both factors have instigated increasing demand for Voltage Optimisation - a solution that accommodates future deterioration by ensuring a safe and regulated supply voltage, achieving exceptional savings and reduced carbon emissions (each kWh of electrical energy saved is equivalent to 0.43kg CO₂).