About us

We provide energy solutions which optimise existing assets. We integrate new technologies to deliver improved performance and commercial benefits.

About us overview
UK Power Networks Services earns place on £650m Network Rail design framework

29 January 2020: The distributed energy solutions provider will support the energy transition of the UK’s railway infrastructure.

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

Our industries
London City Airport

We finance, own, operate and maintain London City Airport's existing electricity network. Through optimum asset management, maintenance and replacement, we ensure that the airport maintains supply resilience to support its daily operations and help it achieve its sustainability ambitions.

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We deliver safe, reliable and innovative bespoke energy solutions enabling our clients to concentrate on their core business.

Our solutions
How can I achieve my sustainability ambitions?

The UK has committed to significantly reduce its greenhouse gas emissions. It has set an ambitious legal target to achieve carbon neutrality by 2050.

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Employing world-class engineers and professionals, we pride ourselves on the expertise of our people to deliver for our clients

The power of diversity and inclusion

Embracing diversity and inclusion as a strategic imperative is critical for any organisation that strives for high performance.

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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.

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