Our Company

An Introduction to Powerstar

Through excellence in engineering and manufacturing along with investment into R&D to both develop new innovations and keep existing solutions at the forefront of technological advancements, our company has built a reputation as a pioneering global market leader of cutting edge energy saving solutions. Our flagship solutions are the Virtue energy storage system and the Powerstar range of voltage optimisation technologies.

Underpinned by a customer focused approach at all levels of the business, we are committed to helping clients become more energy efficient through identifying the correct engineering solution and implementing technologies that are designed to meet the individual needs of each client.

Powerstar - Our Company

Caption: Powerstar head office and manufacturing facility in Sheffield, UK

Our Company Profile

  • Formed in 2001, Powerstar head office is located in Sheffield, UK
  • Manufacturers of VIRTUE energy storage and Powerstar voltage optimisation solutions
  • Technologies are engineered in the UK and exported to over 20 countries
  • Solutions are manufactured under IEC 60076, and under the Made In Sheffield accreditation
  • Powerstar is ISO 9001 and ISO 14001 approved
  • In 2017, Powerstar acquired Bromsgrove Winding Services Ltd (BWS), a reputable manufacturer of bespoke transformers, reactors and chokes

Powerstar has a truly global footprint with an extensive network of office locations and approved partners. This provides a comprehensive geographical presence and offers a tailored, market driven and customer centric approach to ensure clients benefit from localised expert knowledge and understanding of relevant energy management issues.

Powerstar solutions have been installed into thousands of sites throughout the world and the company’s experience covers the full spectrum of clients including; installations at prestigious landmark sites, multi-site and international roll out projects, single installations for public and private sector businesses and domestic projects.

Whatever your business, through results producing and cost-effective energy storage and voltage optimisation technologies, coupled with a renowned concept to completion and engineering led approach, Powerstar can provide a solution to your energy management problem, irrespective of how large or small it may seem.


Powerstar and Bromsgrove Winding Services Ltd are part of the EMSc Global Ltd group of companies.

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Powerstar employee nominated for prestigious KTP award

Powerstar, UK manufacturer of leading-edge smart energy solutions, is pleased to announce that one of the company’s Knowledge Transfer Partnership (KTP) associates, Dr. Olivia Zeng, was nominated for the prestigious KTP Person of the Year Award. KTPs are a three-way working relationship between a company, a recent graduate, and a university, which has Government backing...