Kilmarnock South Substation

Kilmarnock South Substation is a high voltage substation which forms a crucial part of the Electricity Transmission Network in Scotland.

“A-Plant Accommodation provided an accommodation complex for this site, along with welfare and office facilities. A-Plant also provided risk assessments, method statements and lift plans.”

Sam Hunter, Project Manager, Balfour Beatty

Customer Name

Balfour Beatty

Project Location

Kilmarnock, East Ayrshire, Scotland


4 years

Products Used

Total of 20 Eco Cabins comprising 8 Welfare Units and 12 Offices, as well as 9 x 2ft Link Buildings, 2 x 8ft Link Buildings and 4 Staircases and Platforms

Operated by SP Energy Networks (SPEN), Kilmarnock forms a hub for a number of transmission lines. As part of SPEN’s Network Reinforcement Programme, work is currently being carried out at Kilmarnock to upgrade the 275-kilovolt (kV) substation.

The upgrade will help increase capacity in South West Scotland, allowing new renewable energy connections. The work involves an extension to the existing site allowing the construction of two buildings within which new equipment is being installed. This involves significant changes to the current layout of the site and associated activity is required at some of the adjacent transmission towers allowing their connection into the new equipment. A total of 13 bays of Gas Insulated Switchgear (GIS) will replace an existing Air-Insulated Switchgear (AIS) installation which cannot be extended to allow for additional capacity. Construction work on the project started in May 2016 with the completion date expected in late 2019.

The Challenge

An accommodation complex was required in order to accommodate contractor Balfour Beatty on the site for one year, and then electricity company Iberdrola for the remaining three years of the contract. A large provision of welfare and office facilities were required and due to limited space available on the site, the units needed to be double-stacked. In line with the sustainability principles of the contract, the accommodation units needed to environmentally sound.

The Solution

A-Plant Accommodation devised a cabin layout comprising a total of 16 accommodation units - 8 welfare units and 8 offices, as well as 9 x 2ft link buildings and 2 x 8ft link buildings. The units were double stacked and a total of 4 staircases and platforms were provided. Due to significant investment in expansion of the accommodation fleet, A-Plant Accommodation was able to provide high quality Eco cabins with heavy duty steel corner posts for safe stacking, thermal insulation, double glazed windows, internally operated security shutters, dual flush toilet cisterns, wash basins with non-concussive taps and convector heaters with timers.

The Results

A-Plant Accommodation provided both the accommodation complex and technical back-up services. The units will stay on-site for the four year duration of the contract. The project will significantly strengthen the power infrastructure in Scotland and bring more power to consumers.

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