Skip navigation

Power resilience for a net zero world

Contact Us

Case Studies

Tower Hamlets Council






Tower Hamlets Council in London is committed to sustainable development and is continuously improving its services, policies and practices to contribute to a better quality of life for its inhabitants. The Council commissioned Powerstar to survey its facilities at Albert Jacob House – the offices for its Homeless and Housing Advices Services – to determine the effectiveness of voltage optimisation on the site.

The Council has an environmental strategy and is undertaking a number of initiatives to reduce its energy consumption and to lower carbon emissions. Its vision is to become a council with progressively lower environmental impacts and which sets an excellent example of leadership in environmental good practice to the community.


Following an onsite survey by Powerstar at the Council’s Albert Jacob facility and an analysis of their Half Hour Data and electricity bills the annual electricity consumption at the site was determined to be 540,745kWh. The largest consumption areas were found to be the switch
start lighting, air handling units, air conditioning (small VSD), pumps, IT (with UPS) and lift motors. Powerstar were challenged to demonstrate the level of savings in electricity costs and carbon emissions that voltage optimisation could achieve for the Council at this site.


Powerstar identified that a minimum saving of 12% in electricity consumption could be achieved through voltage optimisation and as a result a 226KvA Powerstar unit was recommended and subsequently installed at Albert Jacob House. Powerstar is the only voltage optimisation system designed and manufactured in the UK and is the highest rated with an efficiency of 99.91%. At its heart, the system lowers current and voltage harmonic distortions to reduce energy consumption and operating temperatures


The real-time monitoring system, a standard feature with all Powerstar units will also assist the Council to identify overall electricity consumption and take further steps on their own to make savings through more efficient use of lighting and general equipment

energy cost Saving of


per year and reduced CO2 Emissions by 30 tonnes per year, Plus

54,065 kWh

Reduction in Electricity consumption

Customer Testimonial

Installing the Powerstar will support the Asset Management drive to reduce carbon and energy consumption in Tower Hamlets, always striving to be lean, flexible and green.

Tower Hamlets, The Council Energy Services team

Energy Savings Calculator

Find out how Much You Could Save

The cheapest and greenest energy is the energy you don’t use.

Are you worried about the ever-rising cost of electricity for your business? Find out how much money you could save by completing our 2-minute Energy Saving Calculator.

Grab a recent electricity bill, fill out a few details and within just a few minutes you will have a savings estimation.

Try our Energy Savings Calculator

Contact us to discuss how Powerstar and voltage optimisation can support your organisation with meeting its energy objectives

Get In Touch

You might also be interested in


Reducing Energy Bills

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


Voltage Optimisation

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


Public Sector

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

Related case studies

Bolsover District Council

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

Copeland Borough Council

Voltage regulation technology unlocked a consumption reduction of nearly 60,000kWh for Copeland Borough Council

South Staffordshire Council

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

Kirklees Council

Voltage Optimisation has so far produced an average saving per site of 6.93% over 3 sites reducing CO2 emissions by 11.4 tonnes.


This website uses cookies. You can read more information about why we do this, and what they are used for here.

Accept Decline