UK’s National Grid has awarded a five-year substation replacement contract worth £50m to infrastructure group Balfour Beatty.

Under the contract, the company will be responsible for the replacement of a high-voltage substation at Littlebrook Power Station in Kent.

As part of National Grid’s transformation of the National Transmission Network, the contract will ensure a continued supply of power to the South East of England.

Balfour Beatty will design, supply and construct the large 400kV substation. The company will make use of the capabilities of its unit Balfour Beatty Ground Engineering to finish the ground engineering works.

The project scope includes cabling installation and overhead line connections to the national grid and switchgear design.

Balfour Beatty Power Transmission and Distribution managing director Ian Currie said: “Our extensive knowledge and ability to provide an integrated solution in the delivery of high-voltage substations makes us ideally positioned to help National Grid secure the power supply to the South East of England for years to come.”

Works at the site are expected to commence this summer and complete by winter 2023. During the peak construction period, the project is expected to employ 100 people at the site.

In August 2018, Balfour Beatty received a multi-million-pound contract from Ørsted to build an onshore substation for the offshore windfarm Hornsea Project Two.

Balfour Beatty Kilpatrick will be responsible for providing mechanical and electrical services for the new facility.