There are many variables that come into play when deciding what type of electricity network to build or replace in each area. Like all our decisions, we are constantly weighing up the community’s desires against our need to invest wisely when it comes to deciding on overhead and underground power.
When overhead powerlines reach the end of their lifespan and need to be upgraded, the area is assessed individually and the safest, most reliable and cost-effective solution will be determined – whether that be underground or overhead.
In areas with an existing overhead network, it is not cost-effective to replace the network ahead of its normal lifespan – when it’s in, it’s better to maintain than completely replace.
We’ve assessed using concrete poles in the past, and there are a number of reasons they’re not suitable.