Killala Windfarm, Ireland

Project Name

Killala Windfarm, Ireland


Killala Community Windfarm

Main Contractor:



Killala Windfarm


Mayo, Ireland




Power and Renewables


HV/MV Services


Kirby was awarded the design and build contract for the electrical and civil works at Killala windfarm.

Killala windfarm 38kV substation connects the windfarm to the 38kV distribution system, managed by ESBN through a new 38kV circuit to Tawnaghmore 110kV substation. Kirby acted as PSCS for the project. The substation has a combination of indoor and outdoor equipment including MV switchgear.

The windfarm has 5 wind turbine generators (WTG’s). Each WTG is capable of a maximum output of 3.4MW via a turbine
transformer before being connected to the distribution network at the point of connection via the grid transformer located at the
windfarm substation.


Kirby scope of works included design and build of electrical and civils/building works.

• Primary Equipment Transmission Connection
• Primary Equipment Distribution Connection
• Earthing and Bonding
• Control and Protection System
• MV Cable Connection System
• Fibre Network
• Distribution Underground Cables
• DC Battery Systems
• General and Emergency Lighting
• General Service Power
• Mechanical Plant Service Power
• Fire Detection and Alarm
• Access Control, Intruder and CCTV
• Voice and Data Distribution
• Lightning Protection
• SF6 Ventilation

Installed plant items included 2 number distribution boards, 4 number control and protection panels, 2 number battery systems, 2 number transformers, 3 number MV Switchgear.

The total project meterage consisted of 9,114m of cable and 46 number terminations.

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