Substation Supply Services

Substation Supply Services

SPEC Ltd are able to provide complete substation supply and installation services up to 66kV.

Whether it be a new substation or upgrade to an existing installation, we can offer a solution.

We can design and build or supply and install to a client’s specification. With many years of substation design and installation experience in all sectors of the industrial, commercial and MOD environment, our knowledge is second to none.

SPEC Ltd are suppliers and installers of the industries leading switchgear and transformer brands as well as many specialist manufacturers.

We provide a “One–Stop” project service, including associated building works, such as trenching, concrete base works, fencing and re-instatement. Our customers benefit from a complete management service, ensuring that Health and Safety and statutory compliance requirements are adhered to. All works are programmed in close conjunction with the customer and managed from receipt of order to handover.

As well as individual substation design our engineers can provide a complete site-wide grading exercise to ensure that protection discrimination is maintained. SPEC can also offer refurbished HV and LV equipment to provide clients with a more economic and environmentally considerate alternative.

All our substation solutions are fully tested and commissioned prior putting in service.


  • Oil Circuit Breakers and Switches
  • SF6 Circuit Breakers and Switches
  • LV switchgear Panels
  • Air Circuit Breakers and Switches
  • HV/LV transformers, all types of cooling medium
  • Earthing installations
  • Vacuum Circuit Breakers and Switches.
  • LV Feeder Pillars
  • Associated Building Works

24/7 call out service.
Available 365 days of the year.