FROM CONCEPT

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TO CONNECTION

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Value: Multi Million
Voltage: 132kV
Duration: 18 months

132kV DATA CENTRE CONNECTION

The client required the design and build of a 70MVA 132kV Data Centre connection in Hemel Hempstead, Hertfordshire.

THE CHALLENGES

Complex construction is required, including HDD beneath the M25 under strict National Highways constraints, installing plants and ducts across the River Colne, and safely routing ducts over petrol pipelines and high-pressure gas mains.

WHAT WE DELIVERED

  • JSM constructed a 132/33kV DNO and customer substation and a 16km 132kV dual circuit in highly congested roads
  • The Special Engineering Difficulties (SEDs) included crossing the M25. Horizontal Directional Drilling (HDD) was employed to ensure no disruption to traffic
  • Horizontal Directional Drilling (HDD) was also used to cross a river whilst meeting all environmental standards

16km

132kV Dual circuit 

30

132kV Joint bays

60

Fibre chambers

specialisms used

  • Auxiliary transformer design
  • Compound construction
  • Compound earthing
  • Motorway monitoring
  • Horizontal directional drilling
  • Jointing & Terminations
  • Hot and cold commissioning
    with Energisation
“This project demonstrates our ability to deliver large-scale, high-voltage infrastructure in highly constrained environments. By combining technical expertise with a collaborative approach, we’re able to provide solutions that support the growing demand for data centre capacity.“
James Cooper
Head of Business Development