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SUSTAINABILIT Y SPECIAL | PROMOTION: POWERSTAR | 17
The Powerstar voltage optimisation system reduces electricity bills, cuts carbon emissions and can extend the lifetime of electrical equipment
SAVE MONEY WITH VOLTAGE OPTIMISATION
POWERSTAR, THE MARKET- LEADING voltage optimisation system, designed, developed and manufactured in the UK for over 13 years, remains the only voltage optimisation system in the world to have a patent on its design. Its solutions deliver typical electricity savings of 12-15 per cent – often much more – with a payback period of only two to three years. A new range of flexible
leasing packages is making it more affordable than ever to invest in Powerstar systems in the UK. The technology can now be installed without upfront payments by using the savings as they are made towards monthly lease payments. Repayments can also be set below the level of monthly savings to create a positive cash flow from the outset, allowing working capital to be used for core educational purposes. All repayments are tax deductible. Powerstar’s award-winning system
reduces the over-supply of voltage, which is delivered to all sites by the National Grid, supplying instead an optimum voltage level. This gives three key benefits: it reduces energy electricity bills, cuts carbon emissions and can extend the lifetime of electrical equipment by improving power quality and eliminating damaging peaks and troughs in the electricity supply. Powerstar remains one of the only
voltage optimisation systems capable of making additional savings on LED lighting, as a tender recently awarded by the University of Melbourne proved. The solution was the only voltage optimisation system of the many tested which verified achievable savings. Schools, universities and colleges are among thousands of public and private
enterprises must undergo a mandatory assessment of energy use and energy- efficiency opportunities by December 2015. Voltage optimisation is
a key tool in meeting these requirements. It gives energy savings at source and is a fit-and-forget solution. Powerstar savings are 100 per cent guaranteed following an on-site survey and there is a 15-year warranty with an expectation of 50 years’ lifetime for the system. Powerstar’s unique design
means that savings are achieved due to the negative power created as the system returns the excess voltage in terms of real negative power, which is then deducted from
ABOVE: the Powerstar unit recorded energy savings of 12.75 per cent at the University of Melbourne which included savings on LED lights following tests carried out under controlled conditions
sites globally that are benefiting from a Powerstar installation. These include the University of Bristol, University of York, University of Surrey, King’s College London, the University of Melbourne, European University Cyprus, Neapolis University and Sheffield Hallam University, which reports savings of 16 per cent of kWh consumption as well as a remarkable 75 per cent reduction in the failure of light tubes. Combined energy and maintenance savings have provided Sheffield Hallam with a payback of just over one year. Energy efficiency is also back at the
top of the agenda with the government’s new energy savings opportunity scheme (ESOS) which, according to the Carbon Trust, may apply to some universities and colleges. Under the scheme, larger
To find out how you can benefit from the installation of a Powerstar system visit:
www.powerstar.com
the grid input power. Excess voltage over and above the Powerstar set-point is returned to the grid, which flows towards the supply and is then subtracted from the incoming power. This results in 70-80 per cent of the total savings, with the remaining 20-30 per cent gained from the improvement in equipment efficiencies due to appliances being able to operate at their most effective. A full mathematical simulation
modelling of the Powerstar system carried out at the University of Warwick confirms that, “the overall power consumption is reduced because the negative power is induced as feedback power to the source. Virtually, this power can be considered as being generated from the load side.” B4E
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