How do voltage optimisers save energy?

In the UK, electricity is transmitted from generating stations and renewable power sources at a higher voltage to cover transmission losses due to cable resistance, power problems (harmonics) and weather conditions. Local electricity supplies can also be higher within areas where there are a number of renewable power generating sites (solar PV and wind turbine). In European countries, electrical equipment is designed for 230Vac (single phase) operation. Voltage optimisers lower the incoming mains power supply voltage (which can be higher than 240Vac) to 230Vac or below and this reduces the amount of power drawn by the connected loads which is billed in kilo-watt hours. Voltage optimisation is also known as voltage reduction and can achieve energy savings of 15-30% or more in electricity costs.



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