About us

We work with you to solve your energy challenges through innovative solutions, delivering resilience, cost efficiency and sustainability

About us overview
UK Power Networks Services’ response to COVID-19

As the COVID-19 crisis continues, the safety and wellbeing of our employees, the public and our clients remains our top priority.

Read more


UPS - Facilitating large fleet operators to go electric

Read more


Our clients include some of the highest profile public and private sector organisations with critical infrastructure in complex environments.

Our industries
Network and load growth modelling at Port of Tyne

As one of the UK’s most innovative and efficient deep-sea ports, Port of Tyne has developed a decarbonisation roadmap, with an ambition to reduce net greenhouse gas emissions to zero by 2030 and to electrify the entire port by 2040.

Read more

London Underground - Sub Surface Rail Upgrade

On the Metropolitan, Circle, Hammersmith and City, and District Line Underground infrastructure, we upgraded 16 existing substation locations, with feeder and fibre-optic cabling at 11 locations.


This contract relates to the upgrade of traction power supplies on the Metropolitan, Circle, Hammersmith and City, and District Line London Underground infrastructure.



To upgrade 16 existing traction substation locations with feeder and fibre-optic cabling at 11 locations.

Our works included substation refurbishment; renewal of traction substations’ major plant and equipment; the removal of redundant cables and equipment; and the installation of new HV, DC and fibreoptic cables. We also provided the following main plant as part of our civil works to substations and cable containment systems including but not limited to:

  • 11kV HV switchgear
  • Transformer rectifier units
  • LVAC switchgear
  • 11kV/433V auxiliary transformers
  • 750V DC switchgear
  • Protection equipment
  • 11kV cables
  • SCADA field equipment



Many of the existing cable routes within the tunnels themselves had either reached, or were very close to reaching capacity. Meticulous design and planning ensured all cables were installed correctly and serious gauging issues prevented to avoid the possibility of passing trains making contact with the cabling route.

The size and the weight of the upgraded equipment presented a significant challenge. At each substation the existing 1.5MVA transformers were upgraded to physically larger 2.5MVA. In the constricted working areas of the London Underground this required careful planning and lateral thinking.



Our greatest project achievement was at a location that can’t be disclosed. Here the site was exceptionally constricted. It was also constantly busy with pedestrians and surrounded by Grade II listed buildings.

All case studies