• Powerstar offer voltage management through a range of market leading voltage optimization systems, with solutions for HV (High Voltage) and LV (Low Voltage) installations.
  • Powerstar, is uniquely designed, and is the only voltage management system with a patented design
  • Powerstar Virtue, is an energy storage system which can be integrated with any Powerstar MAX or Powerstar HV MAX voltage management system to store energy locally for use at any time
  • Powerstar are established voltage management solutions, fully designed and manufactured in the UK
    since 2001, by EMSc (UK) Ltd

Powerstar voltage optimization systems

Powerstar voltage optimization systems are available in three variations, providing a voltage management solutions portfolio that ensure the correct engineering solution is adopted for each site to maximize savings and efficiency:

Powerstar HV MAX

  • Summary: Amorphous core HV/LV transformer with integrated voltage optimization.
  • Benefits: Average electricity consumption savings of 17%.
  • For use in: Sites operating a (HV) supply with conventional transformer and high voltage.


  • Summary: Fixed voltage optimization system. Provides a set level reduction across tap range.
  • Benefits: Average electricity consumption savings of 10%-12%.
  • For use in: Sites operating a LV supply with a high, yet stable incoming voltage profile.

Powerstar MAX

  • Summary: Electronic-Dynamic optimization. Maintains voltage at a constant, stable level.
  • Benefits: Average electricity consumption savings of 12%-15%.
  • For use in: Sites operating a (LV) supply with a high and fluctuating voltage profile.

powerstar energy storage system

The Powerstar Virtue energy storage system can be integrated with any new or existing Powerstar MAX or Powerstar HV MAX installation. The solution harnesses the negative power (back EMF) feedback from Powerstar voltage optimization technology to charge a storage medium. The electricity saved and stored from Powerstar to be diverted into a storage medium to be used at any time, including times of peak demand.

Powerstar Virtue

Virtue logo (low res)
  • Summary: Energy storage solution that is integrated with Powerstar MAX or HV MAX systems
  • Benefits: Savings from VO are stored in a storage medium for use when required to reduce electricity costs and increase supply stability. Energy generated from on-site renewables can also be integrated into the storage system to make renewable energy reliable
  • For use in: Large electricity consumers, national grids and demand side operators.



Powerstar’s intellectual property makes waves overseas

Powerstar, the market-leading energy storage and voltage optimisation brand, has announced confirmation that its most recent application to both the European and USA patent offices has been successful, further demonstrating the company’s innovative approach and engineering validity on an international scale. The Sheffield based company is known for its innovative ethos and the latest European...