Location: Fairburn Estate, Strathconon, 5 miles south of Marybank.
Capacity: 40mw (2 turbines at 2mw each)
The turbines generate power at 690 volts AC at the generator. This power is transformed to DC at the top of the tower and then reverts to AC (50 cycles) at the tower base for transmission to the switch room and then to the national grid sub-station at Orrin Dam.
Construction commenced in February 2009 and commissioning was completed in January 2010.
The contractors appointed for the work:
R J Macleod (Civil), Dingwall
RE Power (Control Systems)
Scottish Hydro Contracting (Electrical), Evanton
McNally’s Heavy Lifting
The construction of the Fairburn Windfarm Project is illustrated in the following photographs.
Text: Angus Christie
Photographs: John Finlayson
Approximately 5 miles of access and “distributor” roads had to be constructed, all to a high specification, to accommodate:
1. heavy lift cranes;
2. transport of tower components
3. transport of turbine components.
The roads were constructed from materials which were all quarried on site from two borrow pits.
In addition to the materials required for road construction, the borrow pits were established complete with stone crushing plant to produce the aggregates required in the massive quantities of concrete in the foundations of each of the twenty towers. The concrete was mixed in a batching plant also established on site.
The lifting of the turbine assembly is a complex and specialist activity using equipment and procedures which have been prepared and developed well in advance of lifting.
Note: Given favourable weather conditions and a travel schedule approved by the Police, one complete tower and turbine can be erected in a 24 hour period.
View more photographs of the complete process
We have a considerable about of photographs of the whole process. These are well worth viewing to get a real appreciation of the complexity of the process.