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Power resilience for a net zero world

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Case Studies

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Defence Case Study

All defense sites have critical power requirements and most will ensure that they are able to run independently from the grid by having their own power generation

Parkinson-Spencer Refractories

Parkinson Spencer Refractories achieved protection from Power Disruptions, a 5% reduction in Energy Costs and extra revenue through GridBeyond with a BESS

Viking Fishing South Africa

The Guaranteed savings was exceeded and Viking Fishing South Africa saved 9% on their Energy bills with Voltage Optimisation


Voltage Optimisation helped this company save almost 20% on their annual energy costs and removed 17.7 tonnes of CO2 emissions yearly.

NHS: Rotherham General Hospital

Powerstar were engaged to replace a large hospital’s existing Uninterruptible Power Supply (UPS) system with a more efficient, intelligent Battery Energy Storage (BESS) alternative.

Wienerberger Ltd

Powerstar was commissioned to replace the site’s ageing transformer with modern, low-loss replacements, that incorporated voltage optimisation technology to provide more stable voltages across the site.

PFF Group

Powerstar identified PFF Group’s aging transformers as a a potential power resilience risk, as well as an area where their energy efficiency could be significantly bolstered.


AESSEAL needed help protecting their operations from power disruptions while driving forward net zero strategies.

MI Dickson

Consumption of this site has decreased by over 8,000 kWh after the Voltage Optimisation installation, despite production volume being increased by almost 10%

Racing Engine Manufacturer

This racing engine manufacturer was struggling with grid constraints blocking the installation of vital new equipment.

Aerospace Manufacturer

A global leader in the manufacture of landing gear, suspension and tram coupling bearings was suffering significant scrappage caused by power disruptions.

Armley Moor Health Centre

Voltage optimisation reduced energy usage by 7.9% at this Health Centre and cleaned the Powersupply to reduce the need for equipment repairs

South Staffordshire Council

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

Stoba Prazisionstechnik UK Ltd

Stoba is a mass manufacturer and supplier of metallic parts and high quality components to the automotive industry that operates internationally.

Portland College

This college are saving 11.3% on electricity consumption and has a kWh savings of 163,074 with Powerstar Voltage Optimisation

Carlinghow Academy

This academy was helped by Voltage Optimisation to achieve annual electricity consumption savings of 15.2% and reduced consumption by 26,604 kWh

Quorn Foods

A combination of voltage regulation and low-loss transformers saved this leading food manufacturer over £71,000 on their annual energy bills.

Bolsover District Council

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

Coombe Fisheries Ltd

Consumption of this site has decreased by 14% after the Voltage Optimisation installation, and Brownouts have been reduced


This manufacturer achieved a payback time of under 3 years and lowered it's transformer losses by 44% saving 135,000 kWh annually

Supermarket Chain

The client is a major supermarket chain with multiple stores and distribution centres across the UK.

Castlefields Health Centre

Voltage optimisation saved 13.9% on their energy bills, savings of £3,162 per year and reduced their CO2 Emissions by 29,282 kWh

University Of Bristol

Powerstar Voltage optimisation saved 5.2% of the energy usage of this top 50 University

Holiday Cottages

The client are owners of rural cottages which provide holiday accommodation in the Norfolk countryside.

Royal Hallamshire Hospital

Voltage regulation helped to deliver more than 5% energy efficiency improvements and 11.5% reduction in kVA for this hospital

Precision Products Ltd

This precision manufacturer removed more than 85 tonnes from their annual net emissions with the help of voltage regulation


Voltage optimisation delivered annual savings of more than £25,600 for this UK manufacturer.

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

West Middlesex University Hospital

Voltage optimisation saved 8.4% annually on a modern facility with a Building Management System, VSD’s and other energy devices installed

Tetra Pak CPS Ltd

Voltage regulation technology helped to deliver a 10% reduction in energy whilst bolstering resilience for this leading manufacturer.

2 Sisters Food Group

This food manufacturer used voltage regulation to unlock more than £61,000 of savings on their annual energy bills.

Packaging Company

By replacing ageing transformers with low-loss replacements, this packaging company eliminated 400 tonnes of carbon emissions annually

Zara Solihull

Voltage optimisation helped reduce energy consumption by almost 20% for this high street retailer

Save Group, South Africa

Voltage regulation unlocked a reduction in more than 11% in annual consumption for this South African retailer

Swann Morton

Voltage regulation helped to remove over 100 tonnes of carbon emissions annually from this manufacturer's carbon footprint.

Paragon Quality Foods Ltd

Margins in food manufacturing are tight, making a 12.3% reduction in electricity consumption vital for this UK producer.

Palais Hotel

Hotels often have levels of power consumption, meaning voltage optimisation was able to unlock a reduction of more than 10%.

Copeland Borough Council

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

Birmingham Stopper

This UK manufacturer was able to eliminate 75 tonnes of carbon equivalent from their annual footprint with the help of voltage regulation


Whitbread have eliminated over 12,000 tonnes of carbon emissions across more than 400 sites with Powerstar technology

The Design Museum

The Design Museum is reducing energy consumption and generating revenue using a BESS to access grid balancing schemes

The Ice Co

The Ice Co's need to keep ice frozen during the supply chain means they are faced with very high energy demand

Bristol and Clifton Golf Club

With Voltage Optimisation electricity consumption was reduced by 9,008kWh annually, a 5% reduction & A return on investment of 78.1%

Billingham Forum

Voltage optimisation reduced the facility’s annual electricity consumption by 189,591 kWh, an annual consumption savings of 8.8%

Boardwalk Hotel and Casino

The Boardwalk Hotel reduced its Energy Consumption by an impressive 24% & an annual reduction in electricity consumption of 643,103kWh

London City Hall

A flagship building for the Greater London Authority's net zero efforts, voltage regulation helped to significantly boost energy efficiency

University of Surrey

Surrey University saved 189,474kWh per year, meeting their initial objectives in terms of suitability, effectiveness and return on investment period.

St Hilds School

Powerstar Voltage Optimisation saved this school 9.2% of their annual energy consumption, almost 50,000kWh per year.

Sheffield Hallam University

Powerstar's Voltage Optimisation offered a significant reduction in light failures and a 9% kWh Consumption saving. Improving Energy Efficiency at this University Campus Building

North East Lincolnshire Council

Voltage Optimisation saved this council 24.72% of their energy bills and reduced usage by 57,894 kWh as well as reducing maintenance costs

Amann Group

Find out how this Manufacturer saved 17.7% in annual electricity consumption and savings in annual electricity bills of £24,000 with Powerstar's Voltage Optimisation.

Atlantis, The Palm Hotel

The world-renowned Atlantis The Palm hotel saved 10.9% annually on their energy usage with Powerstar Voltage Optimisation

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.

What our customers say


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