About us

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

About us overview
Power crew’s flying visit lifts museum
Power crew’s flying visit lifts museum

14 June 2022: Fifty staff from UK Power Networks Services donated their time to a speedy makeover of the memorial garden, outdoor seating areas, visitor pathway and service courtyard of the Army Flying Museum in Hampshire.

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Enabling Port of Felixstowe to take major step  towards Net Zero
Enabling Port of Felixstowe to take major step towards Net Zero

6 June 2022: UK Power Networks Services has won a contract to take the UK’s largest container port, and one of the largest in Europe, a step closer to Net Zero.

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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
High Speed 1
High Speed 1

We were commissioned to design, construct, operate and maintain the electrical infrastructure of HS1, the UK’s first major railway constructed in over a century and its first high-speed railway. The project was delivered on time and on budget, within a contract that extends for 50 years after the start of railway operation.

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Southern Water

UKPNS Southern Water Case Study (1)

We provide operation and maintenance support for Southern Water’s 70 high voltage sites in the UK.

We improve security of supply and resilience whilst reducing the risk of network failure across these sites by employing an innovative approach in the design and delivery of an integrated end-to-end solution.



Southern Water is the private utility company responsible for the public wastewater collection and treatment in Hampshire, the Isle of Wight, West Sussex, East Sussex and Kent. Southern Water is also responsible for the public water supply and distribution in approximately half of this area.



Each day, 541 million litres of drinking water from 83 water treatment works are supplied along 13,905 kilometres of water mains to Southern Water’s customers’ taps. Many of their high voltage sites include multiple substations and a variety of switchgear types supplied by different manufacturers. It is critical to them that their operations remain safe, resilient and efficient. Our role is to ensure that these goals are achieved.


Approach and innovation

In addition to providing operation and maintenance services, we are working to replace ageing infrastructure at Southern Water. By replacing ageing oil-filled switchgear with new-vacuumed units, which are more efficient and better for the environment, we are helping Southern Water achieve their environmental goals. Other benefits include higher reliability factor and reduced costs.

The scope of work we are delivering includes:

  • Full asset management and scheduled asset replacement including transformers, LV and HV switchgear, HV pumps, batteries and chargers
  • Electrical infrastructure design, protection studies, earthing studies, security of supply audits and contingency planning
  • HV and LV cable installation and jointing, HV proficiency training and HV protection training
  • Fault isolation, restoration, location and repair
    We also provide specialist technical advisory support and business case assessment to help Southern Water increase revenue generation opportunities and reduce their carbon footprint.



Southern Water aims to provide excellent customer service to their customers, and our role is to support Southern Water achieve this ambition. We recognise our activities can have a tremendous impact on Southern Water’s residential and business customers. We share our extensive experience in operating some of the UK’s most critical private networks with Southern Water and this helps them implement best practices and improve the level of resilience across their electrical networks. Our innovative approach has resulted in reduced overall maintenance costs, reduced risk of asset failure, increased security of supply and better environmental outcomes for Southern Water.





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