Voltage Optimisation

Voltage Optimisation

What is voltage optimisation?

Voltage Optimisation is the intelligent new approach to help reduce your electricity bills. It works by decreasing your energy consumption 24/7 so you aren’t wasting any electricity. It carefully and safely reduces your voltage to around 220 Volts, which reduces your energy consumption and carbon footprint, most importantly, saving you money as a result.


It also extends the life span of your electrical appliances around your home since they are designed to work at a lower voltage than they are normally forced to work at. Your motor appliances will appear to be working fine with your current voltage, however since your voltage is fluctuating from around 220-253 volts, it is detrimental to your appliances as they’ll be running faster and harder than is necessary.


These units can reduce your electricity bills between 10% and 19% per year, with a typical payback period of 3 to 4 years. The eco-max unit also comes with 5 years manufacturer’s warranty so in the unlikely event of a product failure, you can get a replacement unit.

If the reduction in supply voltage is carefully matched to the needs of the connected electrical equipment it is possible to make a substantial energy saving and extend the life expectancy of the connected equipment.

Why can the voltage be reduced?

The electrical supply voltage in the UK is much higher than in Europe: 235-245v in the UK, compared with 220-230v across Europe. However all electrical equipment designed for use in Europe and the UK must be capable of operating throughout the entire voltage range to comply with current CE regulations. A large proportion of this equipment consumes more energy the higher the supply voltage applied to it. Therefore it makes sense to reduce the supply voltage nearer to those found across Europe in order to make substantial energy savings.

Why isn’t electricity supplied at the lower voltages if it saves energy?

Unfortunately, in the UK the electrical supply infrastructure has been historically designed to operate at 240v. This reduces transmission losses and helps maintain the supply voltage for all consumers over large distances and during periods of heavy demand. Therefore the electricity supply companies have no alternative but to generate at the top end of the legal voltage range agreed for all European countries. In fact, the average voltage experienced by UK consumers is 242v. Voltage optimisers overcome and exploit this by optimising your voltage locally within your building.

Although it is true say that the higher your supply voltage, the greater the potential for savings using voltage optimisation, it doesn’t necessarily mean that if your supply voltage is high you will make a large energy saving for the same reduction in voltage. On some sites it may make more sense to optimise the voltage to just the lighting, or a specific area, rather than the entire building. The ‘one box fits all approach’ pushed by some companies certainly does not always make for successful voltage optimisation projects. We need to take into consideration the different kinds of electrical equipment that you have on site. Coupling this approach to the unique modular construction of voltage optimisers allows us to provide you with a tailored, bespoke solution that maximises your savings, at an “off the shelf” price which reduces your payback.