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Case Studies

Department for Business, Energy and Industrial Strategy






The Department for Business, Energy and Industrial Strategy (BEIS), formerly the Department for Business Innovation and Skills (BIS) is a ministerial department of the UK Government, responsible for economic growth through investment in skills and education.


BEIS identified that not only was the incoming voltage to their office & IT centres high but that the buildings were also suffering from power quality issues, namely harmonic distortions, transients and power spikes. Due to the success of previous installations into Government buildings Powerstar was contacted to determine if their voltage optimisation solution could be equally as effective for the BEIS office facilities.


After a site visit, voltage profile analysis and electrical load evaluation Powerstar recommended installing 7 voltage optimisation systems across the BEIS building estates. The Powerstar team worked with BEIS throughout the implementation process to ensure the correct engineering solution was adopted for each of the applications, and remained flexible so that installations could occur at a time to minimise disruption to business operation


The energy consumption savings from the 7 installations averaged at 13.7% per year, with savings ranging from 6.2% to 24.7%. As a result of the installations, BEIS saw significant improvement in their power quality as Powerstar not only reduced the voltage, but also cleaned and conditioned the power supply to suppress harmonics and transients along with providing protection against some power. This resulted in a financial saving of £4,357 per year and an annual emission saving of 29 tonnes of CO2.

Annual AVERAGE energy consumption reduction of


and Improved power quality reducing the need for maintenance

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Public Sector

The public sector consumes £3.4 billion of energy every year, with £1.1 billion attributed to the NHS.


Voltage Optimisation

Optimising the incoming voltage to your site to improve quality, saving energy and costs.


Reducing Energy Bills

Use power more intelligently and effectively to reduce your business/organisation's energy bills and electricity costs.

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Voltage optimisation reduced CO2 emissions by 51 tonnes over 2 sites at Bolsover District Council and saved £9,774 per year

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Newport City Council

Newport City Council used low-loss transformers and voltage regulation to improve their sustainability performance, reducing their annual consumption by over 165,000 kWh

South Staffordshire Council

South Staffordshire Council were looking to install a battery energy storage system that provided them with site-wide UPS resilience


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