go to top scroll for more


Projects: Projects for Investigator
Reference Number NIA_NGET0065
Title Voltage Optimiser Pilot
Status Completed
Energy Categories Other Power and Storage Technologies(Electricity transmission and distribution) 100%;
Research Types Applied Research and Development 100%
Science and Technology Fields ENGINEERING AND TECHNOLOGY (Electrical and Electronic Engineering) 100%
UKERC Cross Cutting Characterisation Not Cross-cutting 100%
Principal Investigator Project Contact
No email address given
National Grid Electricity Transmission
Award Type Network Innovation Allowance
Funding Source Ofgem
Start Date 01 August 2011
End Date 01 August 2014
Duration 36 months
Total Grant Value £75,000
Industrial Sectors Power
Region London
Programme Network Innovation Allowance
Investigators Principal Investigator Project Contact , National Grid Electricity Transmission (100.000%)
Web Site http://www.smarternetworks.org/project/NIA_NGET0065

The project objectives are below:

  • To investigate the effects of voltage change on the substation equipment
  • To investigate how a voltage decrease can impact on energy bills
  • To investigate the two different arrangements of the EMS Powerstar hardware

This project will be successful if we trial the voltage optimiser equipment, and either understand why it is not suitable for installation, or decrease the energy bills for the substation and ensure the hardware is reliable in a high voltage environment.


National Grid have large substation sites that are often heavy consumers of electricity. Introducing a voltage reduction system into incoming supplies is common practice for office and industrial installations and large savings in energy consumption are claimed. If we can reduce the amount of energy consumed per substation, we can reduce the overall impact of our assets. The issue with the standard technology is that we do not know how this will interact with existing systems that are designed to interact with High Voltage equipment. Demonstration This pilot is to install an EMS Powerstar Voltage Optimiser on one of the incoming LVAC supplies at Rayleigh substation and to carry out an evaluation of the benefits and any deployment issues over a period of 1 year.

There are 2 proposed options with different potential benefits:

1 x 500kVA unit on one transformer
2 x 500kVA units, 1 on each transformer

Note : Project Documents may be available via the ENA Smarter Networks Portal using the Website link above

Publications (none)
Final Report (none)
Added to Database 17/12/18