Electrical Engineering Services in Lagos

Electrical engineering contractor · Lagos, Nigeria

Complete electrical services, from the HV intake to the final circuit

33 kV to 415 V

Switchgear, transformers, cable jointing, panels and building wiring

24/7 fault response

Emergency line 0705 739 9297, day and night

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Industrial piping system with pipes, valves, and fittings in a factory/plant setting

About Us

Your electrical engineering partner across Nigeria

For over 10 years, Corustar has delivered electrical projects for homes, offices, plants and oil and gas facilities.Our engineers handle the full job: survey, design, installation, testing, commissioning and maintenance.Every job ends with recorded test results and a written report.

Fast response across Nigeria for planned and emergency work
Certified engineers and trained electricians
From design and installation to testing and safety audits
Industrial, commercial and residential clients
Test instruments calibrated to BS EN ISO 10012

Corustar team members wearing safety gear and branded t-shirts collaborating on a technical task

Complete Electrical Engineering Services

33 kV to the final circuit

Commercial

Installations, upgrades, maintenance and safety audits for offices, malls, hotels, schools and hospitals.

Industrial

Substations, switchgear, transformers, MCCs and plant wiring for factories and oil and gas facilities.

Residential

Full wiring, rewiring, earthing and fault repair for estates and private homes.

Need an electrical
installation, test
or repair?

Book a site inspection with our engineers and get a written, itemised quote.

Give Us a Call Free Quote

Installation | Testing | Maintenance | Safety Audits

Complete electrical services, from 33 kV to the final circuit

Corustar technician on a ladder performing cable work while wearing overalls and a safety helmet

HV/LV Switchgear Maintenance

Planned maintenance for RMUs, VCBs, SF6 switchgear, ACBs, MCCBs and protection relays.

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Open electrical panel with labeled components and a connected multimeter displaying test readings.

Installation & Commissioning

Pressure, VLF, insulation and injection testing for new builds and upgrades.

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Industrial generator set installed in a power room with ventilation and control features visible

Cable Jointing & Terminations

415 V to 33 kV joints and terminations, heat-shrink or cold-applied.

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Cable Fault Location

We pinpoint, repair and recommission faulty underground cables.

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Two engineers in full safety gear working on thick cables connected to a transformer, with a cable ladder visible overhead

Transformer Services

Installation, testing, oil treatment and return-to-service reports.

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Interior view of an electrical control panel showing circuit breakers, wiring, and terminal blocks

LV Panel Assembly

Panels from 100 A to 6300 A, built to BS EN 61439-2.

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Electrical switchgear unit undergoing testing and maintenance with visible instruments and components

Electrical Safety Audit

A 19-point inspection with a risk-ranked report.

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AEMC 6417 clamp meter held by a gloved hand during electrical ground testing on rough earth

Earthing & Lightning Protection

Earth pits, resistance testing, arrestors and surge protection.

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Fluke 6500-2 Portable Appliance Tester on a table beside a blender with active test results displayed on the screen

24/7 Repairs & Maintenance

Fault finding, emergency repairs and planned maintenance contracts.

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Our Advantages

What we do in-house

Our own engineers and crews carry out every service below, from testing to installation.

ELECTRICAL SAFETY AUDIT

General inspection
PAT testing
Thermographic imaging
Earth resistance testing
Risk assessment

LV PANEL SYSTEMS

Panel assembly
Panel installation
Panel modification
Breaker replacement
LV cable maintenance

LIGHTING INSTALLATION

Floodlights
High-bay lights
Street lighting
Commercial lighting
Emergency lighting

EARTHING & LIGHTNING PROTECTION

New earth pits
Earth system upgrades
Lightning arrestor installation
Arrestor testing
Surge protection

TRANSFORMER & GENERATOR SERVICES

Transformer testing
Transformer installation
Oil testing and replacement
Transformer maintenance
Generator connection and changeover

CABLE JOINTING & TESTING

Straight-through joints
Terminations
VLF and hipot testing
Insulation resistance testing
Cable fault location

MV/HV ELECTRICAL WORK

Switchgear installation
RMU maintenance
Protection relay testing
Primary and secondary injection
Substation maintenance

What Our Clients Say

Reliable and Efficient!

Corustar Technological Services exceeded my expectations. Their team arrived on time, handled my home wiring perfectly, and even cleaned up after the job. I highly recommend them for anyone looking for trustworthy electricians in Nigeria. - Chinonso A., Lagos

What Our Clients Say

Prompt Emergency Response

We had a major electrical fault late at night, and Corustar responded within the hour. They diagnosed and resolved the issue quickly. I’m impressed with their 24/7 support and customer-first approach. - Ibrahim K., Kaduna

What Our Clients Say

Excellent Commercial Electrical Work

Corustar handled all the electrical installations for our new office complex. Their attention to detail, safety protocols, and project delivery was top-notch. We’ll definitely work with them again. - Engr. Femi T., Port Harcourt

What Our Clients Say

Highly Professional and Friendly Team

What sets Corustar apart is their dedication to customer satisfaction. The team explained every step of the installation and gave valuable maintenance tips. A solid 5-star service! - Grace E., Ikeja

Emergency Service

Power failure or electrical fault outside office hours? Call our 24/7 emergency line

0705 739 9297

Why Choose

Corustar Technological Services?

One contractor for the whole electrical system, from the 33 kV intake to the socket outlet.

Experienced engineers

Over 10 years of HV, LV and building electrical work across Nigeria.

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Full electrical scope

One contractor from the 33 kV intake to the socket outlet.

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Tested and documented

Every job ends with recorded test results and a written report.

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Safety first

All work runs under permit-to-work and lock-out procedures.

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Your electrical
contractor,
on call 24/7

Complete electrical engineering services across Nigeria.
✅ Certified engineers and calibrated test equipment.
✅ 24/7 emergency response.
✅ Safety and quality on every job.

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