SPL Powerlines is proud to see Project Electra showcased in the April 2026 edition of the Railway Engineering International (RailEI) Journal - a recognition of the innovation, collaboration, and technical excellence delivered by our teams and partners.
The article explores how Project Electra was conceived to address a critical challenge on the Midland Main Line Electrification Programme: the need for high-speed (125mph) overhead line equipment (OLE) testing on the Kettering to Wigston section. With conventional testing capabilities unable to meet the required speeds, a new approach was needed.
In response, SPL Powerlines led the development of a bespoke, industry-first test train solution, bringing together a wide range of specialist partners to design, build, and operate a custom testing capability. This collaborative model positioned SPL Powerlines not only as Principal Contractor, but also as the integration lead responsible for delivering a fully compliant and assured testing programme.
A key highlight of the project was the creation of a unique train consist, combining modified Class 91 and Class 43 locomotives, Mk3 coaches, and a bespoke HS-X pantograph. This enabled comprehensive dynamic testing, including tether testing and full-speed validation of the electrification system in line with ENE NTSN requirements.
The RailEI article also emphasises the quality-first approach adopted throughout the project. Extensive modelling, LiDAR surveys, and rigorous assurance processes meant that the installed OLE system required no adjustment following testing - demonstrating the value of robust design and delivery practices.
Beyond its technical achievements, Project Electra is already shaping the future of rail electrification. The evidence generated has contributed to industry discussions on reducing the need for dynamic train testing at lower speeds, with potential changes to standards now under consultation. This could deliver significant benefits in cost, efficiency, and programme certainty across future schemes.
Project Electra stands as a powerful example of what can be achieved through collaboration, innovation, and a commitment to excellence. We are delighted to see this work recognised by RailEI and shared with the wider industry.
Simon Skinner, Engineering Compliance Director at SPL Powerlines UK&I commented, “I would like to thank John Merriman at RailEI for his work in putting this together. Throughout my career, I have delivered many projects, but this was by far one of the most challenging and complex I have been involved in.
Electa was originally developed to meet a project legislative requirement, but it went on to support additional projects for Network Rail. In an interesting twist, the success of the train could potentially make dedicated test trains a thing of the past. The data collected and resulting reports have now been used as evidence to remove the requirement for construction testing on new OLE schemes. A significant win for the industry, although perhaps not for the future of the train itself!”
Read the full RailEI article here:
https://www.railei.org/knowledge/electrification-article-project-electra/
