Development of Eirgrid and IPP Control buildings (PD/10/507 applies) within substation compound. Development of a wind farm of 20 turbines with associated site roads, hardstandings, cable ducting, meteorological mast, communications mast,substation compound, temporary construction compound and ancillary works at Sliabh Bawn approximately 5km south east of Strokestown, Co. Roscommon.