High Voltage & Substation Works Sydney Fixed price, done first visit
Commercial and industrial sites with HV switchgear, chamber or kiosk substations need specialist electrical contractors. We deliver the LV scope alongside HV partners on new works, upgrades and defect rectification.
NSW LICENSED|FULLY INSURED|LIFETIME WARRANTY
Get an emergency Sydney electrician on the way
Free phone advice · Clear pricing provided before any repair work proceeds
WHAT WE DO
High Voltage & Substation Works - what's included
Commercial and industrial sites with HV switchgear, chamber or kiosk substations need specialist electrical contractors. We deliver the LV scope alongside HV partners on new works, upgrades and defect rectification.
- LV scope for new kiosk and chamber substations
- HV switchgear installation coordination
- Transformer connection and LV distribution
- Substation earthing and equipotential bonding
- HV/LV cable installation and termination
- Defect rectification for insurer or network audits
HV & SUBSTATIONS · SYDNEY
High Voltage & Substation Works in Sydney — done properly, first visit
High voltage and substation electrical work sits at the top of the commercial electrical scope — new kiosk substations for large developments, chamber substation refurbishments for strata and industrial sites, transformer replacements, and LV distribution downstream of the transformer. Empire Electrical Contractors delivers the LV scope end to end and coordinates with accredited HV partners for the switching, testing and commissioning that requires HV tickets.
Typical projects include a new commercial fit-out where the tenancy needs a dedicated transformer and metering; a strata scheme with an aging chamber substation that has been served an insurer or Ausgrid defect notice; and a light-industrial site upgrading from a padmount transformer to a kiosk arrangement to free up land. We handle the LV switchgear, cable ladders and trays, main switchboards, distribution boards, earthing and bonding, and the compliance documentation the network operator requires for energisation.
Every HV/substation project is delivered against a written program with defined hold points for HV switching, insulation testing, protection testing and network sign-off. $20M public liability and full workers cover — insurance certificates and induction paperwork provided for every site.
HOW THE JOB RUNS
Every hv & substations job, same 4 steps
- STEP 1
Scope and site walk
We attend site with your engineer, project manager or strata manager, review the HV/LV scope, and confirm the program and hold points.
- STEP 2
Design coordination
We coordinate with the electrical consultant on cable sizing, protection settings, earthing design and metering — nothing gets built without a design review.
- STEP 3
Install and terminate
HV/LV cable install, transformer connection, LV switchboards, distribution and metering — all to network and AS/NZS 3000 requirements.
- STEP 4
Test, commission, certify
Insulation, earth loop and protection testing complete, HV switching coordinated with accredited partners, and full compliance package issued.
Signs you need hv & substations
When to book a hv & substations sparky
- New commercial development requiring a dedicated substation
- Aging chamber substation with an Ausgrid or insurer defect notice
- Transformer replacement or capacity upgrade
- New HV/LV cable run between substation and main switchboard
- Strata scheme with intermittent HV faults or earthing concerns
- Light-industrial site upgrading its supply capacity
- Substation earthing audit and remediation
SYMPTOMS & CAUSES
What we usually see with hv & substations
- Ageing transformer nearing end of life
- New tenancy requires HV capacity increase
- Substation inspection overdue
- Load growth exceeding transformer rating
- Oil-filled equipment past service life
- Missing HV maintenance records
OUR PROCESS
How we handle every hv & substations job
Same repeatable sequence on every job — no shortcuts, no surprises, no invoices you didn't agree to.
- 1
Assess
HV licensed engineer inspects the substation and reviews SLDs and maintenance history.
- 2
Coordinate outage
Outage window planned with Ausgrid and the customer, temporary generation arranged if needed.
- 3
Install and commission
Switchgear or transformer installed, protection settings tested and commissioned.
- 4
Certify
HV compliance documentation, thermographic scan and 5-year maintenance plan issued.
Typical on-site duration: about 80 hours, depending on access and switchboard condition.
FIXED PRICING
What you'll pay for hv & substations
Every job is fixed-priced on site before we touch anything. No hourly meter, no call-out surprise.
Included in every fixed price
- HV licensed labour
- Switchgear or transformer
- Protection commissioning
- Compliance documentation
COMPLIANCE
Standards we work to
- • AS 2067 — Substations and HV installations
- • ENA NENS 04 — Isolation procedures
Every job includes a Certificate of Compliance for Electrical Work (CCEW) so your installation is on record with Fair Trading NSW.
- • Any HV work above 1kV
- • Substation inspection or repair
- • Capacity upgrades
24/7 Emergency Response
Real Sydney electricians on stand-by - day, night, weekends and public holidays.
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Fully Licensed & Insured
NSW licensed electrical contractor with full public liability insurance.
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Upfront, Honest Pricing
Clear recommendations and pricing provided before any repair work proceeds.
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Lifetime Workmanship Warranty
If our workmanship ever fails, we come back and fix it. Free.
View warranty details
VOLTEX SPECIALIST
25-year RCBO, GPO & switch warranty
Plus 7-year replacement on Voltex internal & external lighting.
Empire Electrical across all of Sydney
Empire Electrical Contractors bring licensed, insured emergency electricians to homes and businesses across the entire Sydney metropolitan area.
From the Eastern Suburbs and Inner West to the North Shore, Northern Beaches, Sutherland Shire, Hills District, Western Sydney and the South - our vans are on the road around the clock for urgent power, switchboard and safety faults.
Same number, same fast response - 24 hours a day, 7 days a week.
High Voltage & Substation Works - questions we hear
MORE SERVICES
Other electrical work we handle
Fully licensed, fully insured, one crew for everything.
Switchboard Upgrades
Safe, compliant switchboard replacements and upgrades
View Switchboards detailsLED Downlights & Lighting
LED downlights, feature lighting and full home relights
View LED Lighting detailsEV Charger Installation
Home EV chargers installed properly, first time
View EV Chargers detailsCeiling Fans
Ceiling and exhaust fans supplied and installed
View Ceiling Fans detailsSmoke Alarms
Compliant hardwired and 10-year lithium smoke alarms
View Smoke Alarms detailsHot Water Systems
Electric hot water repairs, replacements and installs
View Hot Water detailsData & TV Points
CAT6 data, TV points and antenna installation
View Data & TV detailsCommercial Fit-outs
Shop, office and cafe electrical fit-outs
View Commercial detailsElectrical Fault Finding
Diagnose tripping, dead circuits and mystery faults — fast
View Fault Finding detailsLevel 2 Electrical Services
Accredited Level 2 ASP — service lines, meter work and mains upgrades
View Level 2 ASP detailsHigh Voltage & Substation Works
HV switchgear, transformer and substation electrical works
View HV & Substations detailsCCTV & Security Systems
IP CCTV design, installation and configuration
View CCTV detailsSecurity Alarms
Back-to-base and self-monitored security alarm systems
View Alarms detailsAir Conditioning
Split system and ducted air-con install, repair and service
View Air Con detailsSolar & Battery Systems
Grid-connect solar, batteries and EV-ready system design
View Solar & Battery detailsOptical Fibre Splicing & Testing
Fusion splicing, OTDR testing and OS2/OM4 fibre install
View Fibre detailsWireless Access Points
Enterprise Wi-Fi design, install and configuration
View WiFi APs detailsAppliance Repairs
Ovens, cooktops, dishwashers, washing machines and more
View Appliance Repairs detailsUnderfloor Ventilation
Subfloor fans and moisture ventilation for Sydney homes
View Underfloor Vent detailsInsurance Electrical Works
Storm, water and fire damage electrical scope for insurers
View Insurance Works detailsPreventative Maintenance
Scheduled electrical maintenance for homes, strata and business
View Maintenance detailsThermal Imaging
Thermal scans of switchboards, motors and cable joints
View Thermal Imaging detailsTest & Tag
Portable appliance testing and tagging for workplaces
View Test & Tag details5 STAR RATING
What Sydney customers say
Shirish Shetty
June 2026 · Google review
Absolutely outstanding electrician and genuinely one of the best people to work with. He diagnosed and fixed the issue within a couple of hours. He was professional, efficient, and reliable.
Jie Z (Jessica)
June 2026 · Google review
VERY HIGHLY recommend! We had an issue with power at home and needed someone urgently to restore the electricity service. They responded quickly, showed up on time, and got everything back up and running without any hassle.
Vin J
March 2026 · Google review
I highly recommend Joe, he's very skilled, kind and does honest work. He did a massive last minute job for us, installing an entire 17.4kw ducted aircon system after our old unit broke.
Jennifer Cornish
November 2025 · Google review
Exceptional Service - Highly Recommend! I contacted Joe from Empire Electrical to install new powerpoints and downlights. His professionalism, punctuality, and thoroughness stood out.
Jasmin Cumming
July 2025 · Google review
I am so glad I called Empire Electrical. Joe is a very honest person which is hard to come by. He explained everything to me and charged me an incredibly fair price.
Noreen De Gracia
July 2025 · Google review
It was an extremely exceptional service from Joe! He came to replace my cooktop on my rented unit then went above and beyond liaising and explaining with my property manager.
Eric Lau
July 2024 · Google review
I recently had Joe fix two exhaust fans at my place, and I couldn't be more satisfied with the service. Joe showed up on time, explained everything clearly, and fixed the issues quickly.
Recent work across Sydney
Switchboard faults, urgent callouts, residential and commercial - handled by the same licensed team.
Empire teamSwitchboard faults
Empire teamUrgent callouts
Empire teamResidential work
Empire teamKitchen & appliance
Empire teamOn-site, on time
Empire teamUnderground mains
Empire teamFully stocked vans
Empire teamCommercial fit-outs
Empire team7 days a week
Empire teamCouncil & infrastructure
Empire teamSwitchboard faults
Empire teamUrgent callouts
Empire teamResidential work
Empire teamKitchen & appliance
Empire teamOn-site, on time
Empire teamUnderground mains
Empire teamFully stocked vans
Empire teamCommercial fit-outs
Empire team7 days a week
Empire teamCouncil & infrastructure
ALL SERVICE AREAS
Your local electrician across Sydney
Licensed local sparkies across 125 Sydney suburbs. Fixed pricing, workmanship warranty.
Inner West · 35 suburbs
- Strathfield
- Strathfield South
- Homebush
- Homebush West
- Burwood
- Croydon
- Croydon Park
- Concord
- Concord West
- North Strathfield
- Five Dock
- Rhodes
- Canada Bay
- Abbotsford
- Drummoyne
- Ashfield
- Summer Hill
- Haberfield
- Lidcombe
- Enfield
- Belfield
- Dulwich Hill
- Lewisham
- Petersham
- Newtown
- Leichhardt
- Annandale
- Rozelle
- Balmain
- Balmain East
- Birchgrove
- Breakfast Point
- Cabarita
- Chiswick
- Liberty Grove
Canterbury-Bankstown · 5 suburbs

Our Mission
At Empire Electrical Contractors, we're committed to being Sydney's most trusted emergency electrician - whatever the time, whatever the fault.
Our licensed team is equipped with the knowledge, tools and stocked vans to handle any emergency electrical job - from a tripping safety switch at 3am to a burnt switchboard that needs replacing today.
Call us 24/7 to speak with a real Sydney electrician. Clear recommendations and pricing provided before any repair work proceeds.
