Controlling energy is an issue regarding many companies, especially when there procedures are analysed more frequently because of the regulations regarding environment issues and the upholding a green ethos. Among methods which has seen a successful implementation is the voltage optimisation idea which controls energy input to ensure an adequate level is administered for a more efficient output. The variety of device is not restricted. That is, the program can range from a simple transformer to a high tech integrated system which ensures the end user is in control of energy, and if required, alternations can be made. Ensuring this greater efficiency is created through the installation of a series which is connected to the mains electrical supply to a building.