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Power resilience for a net zero world

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About us

Formed in 2001 in Sheffield, Powerstar is a market-leading smart energy solutions provider.

We design, manufacture, and deliver advanced solutions for specialist energy applications. Our focus is on helping clients solve unique energy problems affecting their business, and Powerstar’s expertise enables a fully bespoke solution to be delivered to meet the customer’s exact needs.

Powerstar is a leading provider of behind-the-meter battery energy storage applications, providing complete power resilience with site-wide Uninterruptible Power Supply (UPS). On top of improving power resilience, these technologies support companies on their path to net zero, which is becoming increasingly important in a world reliant on rapid electrification and digitisation.

Through our dedicated team of technical experts, we have developed technical appraisal and project feasibility capabilities with the application of digital twins, energy control strategy planning, and real-time modelling and simulation for microgrid applications. This unique capability allows us to deliver complex energy projects that have demonstrated proof of concept before installation even begins.

For an overview of what we do and how we do it, download our brochure using the button below.

Download the brochure

Meet The Board

Our board offers a wealth of experience and knowledge across every area of the business. Our commitment to innovation, investment in people, and customer-focused approach is fostered by the combined abilities of our board of directors and continues to underpin and drive our status as market leaders.



Dr. Alex Mardapittas is the Chief Executive Officer at Powerstar and founded the company in 2001. An experienced chartered engineer, with a research doctorate, Alex has used his extensive knowledge and experience to spearhead Powerstar since its inception.



Robert Macklin has been the Chief Financial Officer at Powerstar since November 2013. Robert provides a wealth of experience and is highly accomplished having worked at a senior level for numerous international organisations in the UK and USA. Robert holds professional qualifications from the Chartered Institute of Management Accountants in addition to his BA in Accounting and Finance.



Solon oversees all product development, existing product optimisation, technical issues and R&D. This encompasses numerous engineering disciplines, from large scale power engineering and design to micro-scale engineering such as PCB design. Solon holds a Masters in Chemistry, which includes research projects in organic electronics, and is also a member of the Royal Society of Chemistry and the Institute of Directors.



Alastair joined the Powerstar board in March 2021 as Chief Commercial Officer. He brings broad commercial and marketing experience from both corporate and SME engineering businesses, which have taken him to live and work in both Italy and the USA. Alastair has engineering degrees from Cambridge and Cranfield Universities and is a non-executive director of the South Yorkshire Manufacturing and International Trade Forums. He was named 2019 Sheffield Business Person of the Year.



Ian is an experienced, commercially orientated Chairman who has led a variety of SME engineering and manufacturing businesses through growth, change and improvement for corporate, family and private equity owners. He brings a collaborative approach to successful business leadership, guiding management teams and engaging with key business stakeholders, customers and third parties at all levels to deliver sustainable business outcomes.

What our customers say

“Powerstar identified waste that we did not think we had. They diligently overcame issues during commissioning and have provided us with a fault-free system that saves what they promised.”

MARK BOXALL Managing Director Tetra Pak CPS Ltd

“Powerstar has been a major part of our comprehensive energy efficiency programme. It is perhaps the simplest and most effective way to instantly save energy and therefore we would highly recommend Powerstar systems.”

MARK ORPIN Head of Energy Management ASDA Supermarkets

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