The contract to upgrade and develop the electricity transmission network in the eastern half of England, has the option of being extended for a further five years.
 
Balfour Beatty Chief Executive, Ian Tyler, said: "We are delighted to have signed this innovative contract with National Grid as their alliance partner and to be given the opportunity to utilise Balfour Beatty's design, planning, project management, engineering and construction skills, in combination. Our ability to deliver a multi-disciplinary, integrated service is an increasingly important factor in driving our growth and in enhancing our relationships with blue-chip infrastructure customers."
 
The alliance contract, which is part of one of the largest procurement exercises undertaken by National Grid, will support their increased investment in the electricity transmission network and contribute to long-term security of supply. The works are required to connect new infrastructure such as wind farms and new generation plant to the Grid. They will also cover the enhancement and replacement of existing assets.
 
The contract, is one of two overhead line and four sub-station alliance contracts due to be signed by National Grid in the coming weeks.
 
The contract starts from March this year.