FROM CONCEPT

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TO CONNECTION

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Value: Multi Million
Voltage: 33kV
Duration: 10 months

20MVA Battery Energy Storage System

The client requested the design, construction, and commissioning of a 20MVA Battery Energy Storage System (BESS) compound.

THE CHALLENGES

Coordinating works was challenging, with DNO-contracted non-contestable activities taking place alongside JSM on a constrained site, while the installation of 11 batteries, each weighing 32 tonnes, required a complex lifting operation due to limited space.

WHAT WE DELIVERED

  • Works included detailed design and approvals
  • Installation of civil and electrical infrastructure such as plinths for 11nr batteries and 6nr transformers, 700m of 33kV cabling, a 2-panel 33kV switchboard, auxiliary transformer, and fibre connections
  • Temporary works were constructed to support a 300 ton crane that installed the 11nr batteries, each weighing 32 ton

6nr

Transformers

2 panel

33kV

switchboard

700m

33kV

cabling

specialisms used

  • Principal designer
  • Compound construction
  • Compound earthing
  • DNO switchroom & substation
  • Installation of 11nr batteries
  • LVAC supplies
  • Jointing & Terminations
  • Hot and cold commissioning
    with Energisation
Strong coordination and operational control were key to delivering this project efficiently within a constrained site.
Martyn Crocker
Operations Director