ScottishPower Renewables (SPR), a UK-based developer of onshore wind farms, has chosen the joint venture of John Sisk and Son and Roadbridge, as the main contractor for the extension of Whitelee wind farm in North Ayrshire.

The extension of the existing Whitelee wind farm will include the addition of 75 turbines to increase the generating capacity of the wind farm to 539MW, enough to power the equivalent of up to 300,000 households.

Construction on the project, which will enable SPR to increase its contribution to the UK’s renewable energy targets, will commence this month with turbine deliveries planned for July 2011 and the wind farm is expected to be complete in May 2012.

John Sisk & Son director of civil Mark McGreevy said that this is a significant contract win for John Sisk & Son and its JV partner Roadbridge as it continues to build its presence as a key player in the UK energy infrastructure industry.

"We are delighted to support ScottishPower Renewables and help Scotland become a significant generator of renewable energy and look forward to working with local suppliers on this project," McGreevy said.