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Your Guide to Voltage Optimisation


As part of our continued commitment to energy efficiency, Love Energy Savings has put the following guide together which is all about voltage optimisation. This clever energy saving technique is getting more and more popular here in the UK but what is it and how can it be utilised at your business or in your home.

Voltage Optimisation ensures that any power coming into a premises is cleaned, regulated and optimised so it falls in line with what is required. All energy related equipment in the building is assessed to see how its use of power can be streamlined and therefore save as much money as possible.

This energy saving technique also has the dual benefit of extending the life of any electrical equipment as well as obviously reducing costs and helping to lower carbon emissions. This is achieved through the optimisation of power, the cleaning of energy and voltage management.

High Voltage Warning Svg

Streamlined Electricity Use...

Voltage Optimisation is of particular use to any organisation that receives electricity at a higher voltage than is required. The amount of businesses across the country using excessive amounts of energy is much bigger than one would expect and this technique addresses the problem without effecting the actual electricity supply.

The thing to remember with Voltage Optimisation is that this is not an energy saving method that can be easily purchased and implemented. The company which supplies the hardware will need to perform a survey of the site in question in order to establish what kind of equipment is needed. Two big factors are whether or not the business has its own dedicated HV/LV distribution or a low voltage supply (LV). It is also important not to confuse Voltage Optimisation with step-down transformers or voltage stabilisers as these simply lower the voltage rather than save energy.

How Does Voltage Optimisation Work?

Different providers of voltage optimisation technology will have slightly different processes but in general the system works through a method of taking the required voltage from the National Grid, using this and then returning the surplus so as not to waste any energy whatsoever. The process creates something called negative power which boosts supply and streamlines the energy consumption of the site in question. With so many businesses using too much energy and indeed, paying too much for it, it is clear to see the obvious benefits associated with voltage optimisation.

There are two ways that voltage can be reduced:

-          The voltage can be reduced to a predetermined set level via variable electronic, dynamic voltage optimisation.

-          The voltage can be reduced by specified amount which is set in relation to the incoming supply. This is called fixed voltage optimisation. 

There used to be some debate regarding the effectiveness of voltage optimisation but it has now been tried and tested using advances in technology. The process can actually be traced back as far as a hundred years when it is thought to have been used in the glass industry.

Study from Intel...

IT giants Intel actually conducted their own study into voltage optimisation back in the 1990’s and found that an 8.9% reduction in voltage resulted in them consuming around 20% less energy. With a company as massive as Intel making those savings and seeing the benefit of this energy efficiency technique, it has hardly been surprising to see a host of major UK businesses taking advantage also.

Main Advantages of Voltage Optimisation

- Voltage Optimisation is seen to be a key energy saving method that can streamline energy consumption significantly and therefore help to reduce carbon footprint.

- This energy saving method can provide payback within 1-2 years.

- Tried and tested method for ensuring only the optimal voltage levels are being delivered to your electrical equipment.

- Energy savings of 16% on appliances, 14% on chillers, 15% on certain types of lighting  and 4% on direct motors can be made through the effective use of voltage optimisation.

- Can be installed at distribution level or at the low voltage incomer.


To find out more about how you can up the energy efficiency efforts in your business, or to see instantly whether or not you can get onto a cheaper supplier or tariff, get in touch by calling 0800 9888 375 or you can use our no obligation comparison engine to get instant prices.