HV/MV Services

HV/MV Services

HV/MV Services

Kirby is a market leader in delivering Power and Renewables projects, providing High Voltage / Medium Voltage (HV/MV) design & build services, of both, AIS & GIS systems, up to 400kV to DNOs, TSOs, the renewables sector and large industry facilities requiring high capacity power.

Our Power and Renewables teams have also got substantial experience in delivering high-profile HVDC interconnector projects in Ireland and the UK. With an increasing focus on maximising the renewable energy utilisation, we are also embracing and have delivered numerous battery energy storage systems (BESS) projects, which are based on a green technology that eliminates electricity waste and enables excess renewable power to be stored and utilised when it’s required. Our services are delivered by an experienced in-house team of professional engineers, construction and commissioning teams, including internal SAPs approved to operate HV/MV systems.

Our scope of work focuses on electrical and civil Balance of Plant contracts. We have in-depth expertise and experience in the design & build of new contestable and non-contestable substations, as well as the refurbishment of existing substation in live environments. Kirby has successfully delivered contestable HV/MV substation projects for ESB Networks, EirGrid, Scottish Power, large industry facilities and wind developers, connecting over 2GW of renewable energy to the grid in the UK and Ireland. We are fully accredited with Lloyds NERSAchilles UVDB and Achilles Sellicha; we are representatives of various country-specific Wind Energy Associations and regularly contribute to industry discussion papers as a leading Power and Renewables focused contractor.


Featured Case Study

Project: Birkenhead 132kV Asset Replacement

Location: Birkenhead, England

Value: £4m

Sectors: Substations and Renewables

Services: HV/MV Services

Birkenhead, England

Kirby was responsible for the electrical installation and commissioning of Birkenhead 132kV Asset Replacement project. Kirby made a significant contribution to the replacement of the existing Air Insulated Switchgear (AIS) Substation with a new indoor Gas Insulated Switchgear (GIS) Substation and transferal of all existing 132kV circuits and commission to the new GIS.

This included the installation of the C&P panels, battery systems, LVAC board within the control room and the interconnection cable between the GIS equipment and SGT panels. The project successfully energised 3 nr. Supergrid Transformer bays and 7 nr. 33kV local remote end substations.


Kirby was responsible for the electrical scope of works.

The electrical systems installed by Kirby included:

  • Primary Equipment Transmission Connection
  • Earthing & Bonding
  • Control & Protection System
  • Fibre Network
  • OHL (Design & Build)
  • DC Battery Systems (Design & Build)







Scroll to Top
Skip to content