Helping homes and businesses save money and reduce their carbon footprint

VoltagPowerstar Logo (white)e optimisation systems from Powerstar, designed for single phase and smaller 3-phase premises



VO4 in the Domestic Sector

Voltage optimisation; the key to sustainable homes

  • Saves on average £150 per year
  • Typical reduction in CO2 emissions of 330lbs-500lbs
  • No change to electricity supplier needed

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VO4 in the Retail Sector

Voltage optimisation; Top of the shopping list

12 month independent study by MJ Energy Services

  • Annual energy reduction of 10%
  • Payback in less than one year!
  • Saving over 12 month trial: £985

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VO4 in the Hospitality Sector

Voltage optimisation; Catering for the industry

in to lunch

  • 11.1% saving in energy consumption
  • Simple installation, no change to supplier needed
  • Reduced carbon footprint

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VO4 in the Solar Sector

Combining Solar & Voltage optimisation saves £££’s

  • Increase lifespan of the inverter
  • Reduce cut out frequency
  • Reduce heat build up and consequent losses

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VO4 in the Office Sector

Voltage Optimisation; Powering Profitability

  • Delivers substantial energy and carbon savings
  • Average savings of 10%-12% in electricity consumption
  • Reduce electricity usage with no affect to business operations

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VO4 in the Health Care Sector

Voltage optimisation; Delivering healthy savings

  • Make savings which can then be invested in patient care
  • Extends life and reliability of critical equipment
  • Works on all circuits 24 / 7

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Our solutions

EMS, Energy Management Systems, Sheffield








Single and three-phase voltage optimisation systems
for use in homes and small businesses.

Voltage optimisation systems lower the incoming voltage to the level required by on-site electrical equipment, which in turn reduces electrical consumption, cuts electricity bills and lessens the wear on appliances.

Product Range


Our company

EMS, Energy Management Systems, Sheffield

The company has been granted a number of accreditation’s for its manufacturing processes, operational procedures, systems and supply chains used, including the prestigious Made in Sheffield Mark of  Excellence, an exclusive accreditation awarded to Sheffield companies who uphold the cities standards of excellence.
Company Information


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Our single phase and small three phase systems are typically suited for customers with consumption up to 300,000kWh per year.

For sites with higher levels on annual electrical consumption our larger Powerstar systems are an ideal solution.

Savings Studies


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A fit and forget solution, which requires no change to lifestyle or business operation.

Installation is quick and simple with no change to electricity supplier needed. Savings are immediate with typical paybacks under 5 years.

Benefits of VO4