Mains Cable Replacement
Underground Power Conversion
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Convert Overhead Power Lines to Underground Power
If you’re renovating, landscaping, or upgrading your property, underground power conversion is a popular way to improve safety, appearance, and long-term reliability. Alectrics provides professional overhead to underground power conversions for residential and commercial properties, managing the process from start to finish.
Many homeowners search for ways to remove overhead power lines — we make that transition safe, compliant, and straightforward.
Residential & Commercial Underground Power
We carry out underground power conversions for:
Residential homes and renovations
Older properties and villas
New builds and rebuilds
Commercial buildings and offices
Subdivisions and developments
Workshops and light industrial sites
Each project is planned to suit the site, access, and power requirements.
Book an Underground Power Assessment
If you’re considering converting overhead power to underground, Alectrics can assess your site and recommend the best solution.
Underground Power Conversion FAQs
What is underground power conversion?
Underground power conversion involves relocating an existing overhead power supply (typically from a street pole) and installing the mains cable underground to your property.
This replaces visible overhead lines with a concealed underground cable, improving both safety and aesthetics while meeting current electrical standards.
Why convert overhead power to underground?
People usually look into underground power when they want to:
Remove overhead power lines from their property
Improve safety around buildings, driveways, or trees
Reduce the risk of weather-related damage
Improve the appearance and value of their home
Renovate or rebuild an existing property
Upgrade aging or damaged overhead mains cables
Underground power is a long-term solution that suits modern homes and developments.
When is underground power conversion required?
You may need or choose underground power if:
You are undertaking a major renovation or rebuild
Landscaping or driveway works affect overhead lines
The existing overhead mains cable is damaged or non-compliant
Council or subdivision requirements apply
You want to future-proof your property
We can assess whether underground conversion is the best option for your site.
Our underground power conversion process
Alectrics manages the entire conversion process, including:
Site assessment and planning
Determining cable size and route
Liaison with the local lines company (if required)
Trenching or ducting for underground cabling
Removal or disconnection of overhead lines
Installation of the new underground mains cable
Testing, certification, and final commissioning
We ensure all work is completed safely and in compliance with NZ electrical standards.
Can you convert power during renovations?
Yes. Underground conversion is commonly done during renovations, rebuilds, or landscaping projects.
Do you deal with the lines company?
Yes. We manage all required coordination with the local lines company.
Will I lose power during a mains upgrade?
Yes, but only temporarily. We’ll plan the upgrade to minimise downtime and keep you informed throughout the process.
Book an Underground Power Assessment
If you’re considering converting overhead power to underground, Alectrics can assess your site and recommend the best solution.
Contact us today to book an underground power conversion assessment.
