Skip navigation

01142 576 200

About UsCase Studies & Testimonials

Birmingham Stopper


Birmingham Stopper has a long established reputation in ensuring high levels of responsible corporate citizenship. The company is constantly seeking ways to lower its environmental and societal impacts and tasked Powerstar with helping them make significant reductions to their electricity usage.


Established in 1892, Birmingham Stopper provides a comprehensive metalwork service, with specialist knowledge of complex pressings and fabrications.

The company are dedicated to working within a framework which encourages societal, environmental and economic corporate citizenship. It is the strategy of Birmingham Stopper to produce world-class products whilst also ensuring their actions are not detrimental to the lives of future and existing generations.


Birmingham Stoppers were looking for a solution that would help the company to reduce its carbon footprint as well as cutting the amount and cost of energy used on site.
It was important that any adopted solution did not affect the operational performance of the equipment and machinery on site.

Powerstar was challenged to establish whether voltage optimisation would deliver the results the company was looking for.


Before making any recommendations and before any of the systems were installed, Powerstar engineers carried out a full site survey to ascertain the electrical loading characteristics. The process involved calculating the savings that could be achieved and data logging the voltage. By analysing the data logging information, the optimum voltage for the site was then determined.

Following the site survey, the manufacture and install of two Powerstar units were commissioned (500Kva and 90kVa) to meet the specific requirements for the site and provide the optimum savings.

As part of the Powerstar Quality Management System, which is applied to all activities and which has been developed on principles defined within BS EN ISO 9001:2008, the Powerstar team worked closely with Birmingham Stopper throughout the project delivery and installation process to ensure all the customers’ requirements were adhered to and no disruption occurred to the sites manufacturing output during the installation.


Powerstar is the only patented voltage optimisation system in the world and it’s unique design ensures that energy savings are maximised without compromising the supply.

Through the installation of the Powerstar systems, Birmingham Stopper have achieved savings of 12% in energy consumption. The company are also benefiting from a reduction in carbon footprint in excess of 75 tCO2 per annum.

In addition to the savings, by reducing the voltage levels, operating temperatures of motors on site will be lowered which will lead to reduced maintenance costs.


Powerstar are a unique find. They provide simple, pragmatic solutions to reduce energy consumption. Benefits are instant and Powerstar’s confidence in the product is reinforced by guaranteeing the promised savings. If you are serious about energy reduction, we certainly advocate the effectiveness of energy optimisation equipment.”

James Bowyer, Quality Manager

View the Case Study PDF Here


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

Accept Decline