Work has started on constructing the grid control building at Fallago Rig Windfarm in the Lammermuir Hills.
National infrastructure specialist Barhale has started work on the building having been contracted by Scottish Power Electricity Networks.
The building will be used to monitor the electricity generated by the windfarm’s 48 turbines before it is transferred to the National Grid via a substation.
The 26-week project is scheduled to be completed by early next spring with the windfarm due to become operational next autumn.
The windfarm will have a generating capacity of up to 144 megawatts – enough electricity to power up to 90,000 homes with green energy in the Borders.
The developers say it will play a vital role in helping the UK achieve its European Union target of obtaining 15 per cent of its energy from renewable sources by 2020.
North British Windpower and its investor, EDF Energy Renewables, are developing the project.