Sunken but the same

In the parts of our network which are underground, powerlines are sunk beneath the ground and a mini-pillar or ‘green dome’ is installed just inside the property to connect homes to the network. 

What is a green dome?

You may have seen 'green domes' or pillars in front of homes, in parks or on roadsides. They are like sunken power poles that connect homes to the electricity network.   

It is the same electrical wiring that runs from power poles to the top of houses, except underground. The green dome acts as a protective housing for the electrical wires that feed a property.  

It’s easy to miss them, as they are coloured green to blend in with natural surrounds, however it is important to remember that they play an important role in supplying your property with power and, if damaged, pose the same risk as a downed powerline 

If you see a cracked or damaged pillar

Pillars contain live wires and if damaged, can be just as dangerous as a fallen powerline.

Stay away and immediately call Horizon Power on 13 23 51.

Take care around green domes

In areas with underground power, homes are connected to the electricity network through service pillars. They’re typically located just inside the property boundary. As pillars contain live electrical wires, they should always be treated with caution.   

Trees and powerlines

Here's how to avoid tree branches touching powerlines, which can cause power interruptions, fire and other accidents. 

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Don’t dig if you don’t know what’s down there

If you plan on digging or excavating, it’s important you don’t start until you know where underground cables are located. Because accidentally hitting or damaging underground cables can be costly and dangerous. It could even cost you your life.

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Electricity is all around us

Read our quick guide on how to take care around electrical infrastructure you can and can't see.

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Horizon Power acknowledges the Traditional Custodians throughout Western Australia and their continuing connection to the land, waters and community. We pay our respects to all members of the Aboriginal communities and their cultures; and to Elders past, present and emerging.

Aboriginal and Torres Strait Islander people are advised that this website may contain images, names or voices of deceased people.