Preformed Windings: Quality, Service & Partnership Powering Global Energy Infrastructure
Preformed Windings (PFW), a global leader in high-voltage (HV) coil and bar manufacturing, continues to strengthen its position within the hydropower, nuclear and energy industries, delivering engineered solutions that underpin some of the world’s most critical power generation assets.
Based in South Yorkshire, with two manufacturing facilities and a workforce of more than 125 employees, PFW has built a reputation founded on a clear and consistent philosophy: Quality, Service & Partnership.
This approach has enabled the company to develop long-term relationships with utilities, OEMs, and service organisations across Europe, North America, the Middle East and Asia.
PFW specialises in the design and manufacture of high-voltage stator coils and bars for rotating electrical machines, supplying products that must perform in highly demanding environments where reliability and safety are paramount.
Through continuous investment in advanced manufacturing technologies, insulation systems and testing processes, PFW ensures its products deliver exceptional operational performance, extended asset life and reduced downtime.
At the forefront of this innovation, PFW is recognised as a world leader in Ultra Low Partial Discharge (PD) technology.
This leadership has been reinforced through the publication of a detailed technical White Paper, developed in conjunction with the U.S. Army Corps of Engineers, presenting comparative testing and measured results that
Quality sits at the heart of every process, from initial engineering design through to final inspection and dispatch.
The company operates with a zero-compromise approach, embedding quality assurance into every stage of production.
This commitment has positioned PFW as a trusted partner within the hydropower, nuclear and wider energy sectors, where equipment failure can carry significant operational, financial and safety consequences.
Alongside quality, PFW places equal emphasis on service and partnership.
Rather than operating solely as a component supplier, the company works collaboratively with customers to develop tailored solutions that address specific operational challenges.
This partnership-led approach ensures projects benefit from responsive technical support, flexible manufacturing capability and close engineering collaboration, delivering outcomes that are both technically robust and commercially effective.
This strong international focus has delivered substantial export growth, with PFW recognised by the Global Growth League as the third fastest-growing exporting company in Yorkshire, as featured by Yorkshire Business Insider.
This achievement highlights the company’s expanding global footprint and its growing contribution to the reputation of UK manufacturing excellence.
Investment in people and innovation remains central to PFW’s long-term strategy.
The company actively supports apprenticeships, graduate development and degree-level engineering programmes, working in partnership with Sheffield Hallam University and the Advanced Manufacturing Research Centre (AMRC) in Sheffield.
In addition, PFW currently hosts two Knowledge Transfer Partnership students, leading digital production tracking projects that are enhancing manufacturing efficiency, traceability and data-driven decision-making.
PFW is also committed to developing talent beyond traditional engineering pathways, with apprenticeships now embedded within its Marketing Department, supporting the development of commercial and digital skills aligned to modern manufacturing needs.
From its South Yorkshire base, Preformed Windings continues to grow as a trusted global partner to the hydropower, nuclear and energy industries.
Through its unwavering focus on Quality, Service & Partnership, the company is not only shaping the future of high-voltage manufacturing, but also playing a vital role in supporting resilient, efficient and sustainable energy infrastructure worldwide.