It’s likely that voltage optimisation will only be of interest to you if you have particularly high electricity bills. The percentage savings are likely to be modest, so it really only makes financial sense when your bills are high.


Modern appliances generally use significantly less energy than those of even 10 or 15 years ago.  Fridges and freezers in particular use a fraction of the power of older models and therefore are usually well worth replacing.

Many electrical appliances now come with an energy rating:

Updated 28 Oct 2017

After the use of mains gas for central heating, the use of electricity is most people’s biggest contribution to their carbon footprint from activities in the home. However, a lot of electricity is needlessly wasted, so it is easy to make savings.

Electricity and appliances tips:

  1. Switching off and stand-by