(1) what the average distance is between an onshore wind farm and its connecting sub-station;
(2) what length of cables between onshore wind farms and connecting sub-stations has been placed (a) above ground and (b) underground in each of the last five years;
(3) in which locations cables between onshore wind farms and connecting sub-stations have been placed completely underground in each of the last 10 years.
The Department does not hold this information. Wind farms usually own the cables connecting them to substations. Gathering the information requested would, therefore, require contacting individual wind farm developers at a disproportionate cost.