The design of the substation utilises gas-insulated technology.
Murphy will utilize its in-house expertise to deliver the project, which includes constructing a 400kV substation, a 132kV substation, ancillary facilities, underground cabling, and modifications to the existing 400kV overhead line network to integrate with the new substation. The 132kV substation will connect via underground cables. The scope also covers a 1.2km raised access road from the A412 and related infrastructure, including a new road bridge over the River Alder Bourne.
The substation’s design incorporates gas-insulated technology, reducing its footprint by approximately 70% compared to traditional designs, minimizing environmental impact and preserving the local landscape. Laura Mulcahy, NGET project director, stated: “Our new Uxbridge Moor substation will provide vital access to power for data centres that are at the heart of Britain’s innovation and economic growth. It will enable new jobs and investment in Buckinghamshire, and will support the UK’s digital future. Alongside these significant benefits, we are working to keep the substation’s environmental impact to a minimum. By using the latest SF6-free gas-insulated switchgear, we’re reducing the size of this crucial site by around 70%, and ensuring its technology is sustainable and resilient long into the future.”
The project supports economic growth by powering data centers and fostering job creation in Buckinghamshire. It aligns with efforts to enhance the UK’s digital infrastructure while prioritizing sustainability through advanced, eco-friendly technology. Earlier in 2025, Murphy participated in the groundbreaking ceremony for Eastern Green Link 1, a joint venture with SP Energy Networks and NGET, to deliver green electricity to two million homes via a 190km undersea cable connecting southeast Scotland to northeast England.
This initiative underscores Murphy’s role in advancing the UK’s energy infrastructure, ensuring reliable power supply, and supporting sustainable development in response to growing regional demand.
