icon-arrow-right icon-play icon-close


We have extensive experience of managing the design, installation and commissioning of vital energy infrastructure.

ea one

We are a specialist extra high voltage (EHV) underground cable installation contractor, providing customers with optimal design solutions for cable systems up to and including 400kV. Our focus is on underground cabling works within substations, across land pipeline installations for offshore and onshore wind farms, and between country interconnectors.

We deliver capital projects and infrastructure upgrades for UK clients, such as:

  • National Grid
  • Scottish and Southern Energy
  • Southern Electric Power Distribution
  • Electricity Alliance West
  • Electricity North West

VolkerInfra currently has two flagship projects across the UK at the Moray East and Hornsea Two offshore windfarms.


We are regarded as one of the leading underground cabling companies in the UK having delivered some of the country’s largest HV and EHV cabling projects.

Our expert in-house delivery teams provide bespoke turnkey cable system design, installation, jointing, terminating and pre-commission testing for voltages up to 400kV.

We deliver underground cabling to networks ranging from a few hundred meters in length to connections that are hundreds of kilometres long. 

For more information on the specialist services we provide, please click here 


Horizontal Directional Drilling (HDD)

The business specialises and is a market leader in horizontal directional drilling (HDD), offering an unrivalled team of in-house experts capable of executing the largest and most complex HDD projects using its comprehensive fleet of drilling rigs.

HDD offers a trenchless method of installing pipelines along routes where conventional open cut is not possible, such as under roads, railways, rivers, environmentally sensitive areas, long sea outfalls and shore approaches.  During 2019, we worked along a 40km cable route, delivering power to the onshore substation from the East Anglia One offshore windfarm. 

For more information, please click here


Key projects: Moray East offshore wind farm, Hornsea II offshore wind farm, East Anglia ONE offshore wind farm, Triton Knoll offshore wind farm.