Aerial Survey of Power Lines
MainPower will be conducting aerial surveys of the power lines on our network from April 7, 2026 to May 2, 2026. Inspections are completed by a helicopter mounted with a camera. It will fly at around 150 meters above the power lines – the normal height that aircraft, like the Westpac Rescue Helicopter, usually fly.
Electricity supply will not be affected during the inspections.
The survey captures images to produce a model of our network. This tells us the condition of our assets so we can identify any potential issues. Using the model, we can analyse various scenarios on the network, assess the impact of each scenario and model proposed work programs, such as vegetation work and pole replacement, and determine the effectiveness of the work.
The camera naturally captures a 10 meter field of view around the centre of the pole, but where possible, there will be no images of private property taken.
The helicopter will typically fly continuously at a moderate speed. Some turning or circling may be necessary in some areas and the helicopter may need to hover for brief periods to fully capture the power line imagery required.
Flight update
Last week, flying began over Block 6 (Oxford & West Eyreton) and Block 4 (Loburn, Sefton & Amberley). Due to unfavourable weather conditions, flying is unlikely to take place between Monday 20 April, Tuesday 21 April and Wednesday 22 April. If conditions improve, work will continue in Blocks 6 and 4. Further updates will be provided as conditions change.
Close up of flight path sections below
