High-Voltage Distribution Systems
HV and MV distribution for institutional and commercial sites across Ghana — transformers, ring main units, substations, and the GRIDCo/ECG connection interface. Electricals Ghana engineers each commission to specification and hands it over in writing. For over 20 years.
Electricals Ghana specifies, installs, and commissions high-voltage and medium-voltage distribution systems for institutional and commercial sites across Ghana — the MV intake, transformers, ring main units, substations, and the connection interface with GRIDCo and ECG. Each commission is engineered to a written specification and handed over with drawings and test results, by a firm established over 20 years ago. Call +233 27 000 0866 to arrange a site survey and load study.
Why HV / MV Distribution Is Engineered, Not Improvised
Past a certain electrical demand, a low-voltage-only supply stops being practical: cable sizes, volt-drop, and fault levels make it uneconomic and unsafe. Large hospitals, data centres, industrial plants, banks, and institutional campuses take their supply at medium voltage (commonly 11kV or 33kV from GRIDCo/ECG) and step it down on site through a transformer to the 400/230V system the building uses. That MV chain — intake, transformer, ring main unit, switchgear, and substation — is the part above your main LV board, and getting it wrong is not a tripped breaker; it is a facility-wide outage or a serious safety event. We design and build that chain to the load and to the utility connection requirement, then prove it before energising.
HV / MV Systems We Deliver
MV Intake & Utility Interface
The connection point from GRIDCo/ECG — metering, intake switchgear, and the protection that sits between the utility and your installation. Designed to the utility requirement and coordinated with them through to energisation.
Distribution Transformers
Selection, installation, and commissioning of MV/LV transformers sized to your maximum demand with headroom for growth — oil-filled or cast-resin, sited and ventilated for the building, with earthing and protection to match.
Ring Main Units & MV Switchgear
Ring main units and MV switching that let a site take, isolate, and ring-feed its supply — the backbone of a resilient MV distribution, with documented protection settings.
Substations & Earthing
Substation arrangement, civils interface, cable terminations and glanding, and the earthing system that ties the whole installation to a safe, tested reference.
What an HV / MV Commission Covers
| Element | What we deliver |
|---|---|
| MV intake & utility interface | Connection point, metering, intake switchgear, GRIDCo/ECG coordination |
| Distribution transformer | Sizing, installation, ventilation, earthing, commissioning |
| Ring main unit & MV switchgear | Supply, install, set protection, document |
| Substation & civils interface | Arrangement, terminations, glanding, earthing |
| Single-line & test records | Drawings, protection settings, test results in writing |
How We Deliver an HV / MV Distribution System
- Site survey & load study — establish demand, growth, supply position, and the GRIDCo/ECG connection.
- Design & single-line drawings — transformer and switchgear ratings, protection, cabling, earthing — issued for approval.
- Procurement & build — transformers, RMUs, MV/LV switchgear, substation, to the approved specification.
- Commission, test & hand over — test, energise with the utility, hand over drawings, results, and the operating record.
Standards & Compliance
- Work delivered by Energy-Commission-licensed personnel — Certified Electrical Wiring Professionals (CEWP) — to Ghana’s electrical wiring regulations (L.I. 2008) and the GS 1009:2012 wiring code on the LV side of the installation
- MV / HV design and substation work carried out to recognised high-voltage practice — single-line documentation, protection coordination, earthing, and tested commissioning
- The MV supply and metering coordinated with GRIDCo / ECG so the connection, protection, and energisation are done to the utility’s requirement, not improvised
- Established over 20 years ago — drawings, protection settings, and test results handed over in writing, owned by a named member of the Project Office from survey through warranty
What It Costs
An HV / MV distribution system is priced on survey. The cost is driven by the demand, the transformer and switchgear ratings, the substation civils, the cable runs, and the utility connection — none of which can be quoted honestly before an engineer has studied the load and the site. We survey, design to your specification, and issue a written, itemised price before any procurement or work begins.
Where We Work — Across Ghana
We deliver HV / MV distribution for institutional and commercial sites across East Legon, Spintex, Tema, Airport Residential, Cantonments, Ridge, the Accra industrial areas, Achimota, and Dzorwulu — plus Kumasi and Takoradi. Diaspora and institutional owners: we survey, design, build, and hand over documented, with progress reported throughout.
Areas We Serve
Electricals Ghana delivers high-voltage and medium-voltage distribution across Greater Accra — East Legon, Spintex, Tema, Airport Residential, Cantonments, Ridge, Achimota, Dzorwulu — plus Kumasi and Takoradi.
Related Services
- Switchgear & Panel Installation — the LV switchgear and panels fed from the transformer
- Industrial Facility Electrical — plant power, distribution, and machinery
- Data Center Electrical — resilient power for critical IT loads
- Hospital & Theatre Electrical — clinical-grade power and resilience
- Inspection & Certification — tested, documented, certified installations
Frequently Asked Questions
What is the difference between high-voltage and medium-voltage distribution here? On a typical Ghana site the utility supply arrives at medium voltage (commonly 11kV or 33kV from GRIDCo/ECG) and is stepped down through a transformer to the 400/230V system the building uses. “High-voltage distribution” means the MV intake, transformer, ring main unit and switchgear, and substation — the part above your main LV board. We design, install, and commission that whole chain.
Do you handle the GRIDCo / ECG connection? Yes. A new or upgraded MV supply is coordinated with the utility — connection point, metering, protection, and energisation. We design to the utility requirement, prepare the documentation they need, and coordinate the connection and switching so your substation is energised correctly.
Why use a transformer and substation instead of a bigger LV supply? Past a certain demand an LV-only supply is impractical — cable sizes, volt-drop, and fault levels make it uneconomic and unsafe. A dedicated MV intake and on-site transformer give a large facility a stable supply, room to grow, and a clean separation from the utility side.
How much does an HV distribution system cost? It is priced on survey — driven by demand, transformer and switchgear ratings, substation civils, cable runs, and the utility connection. We survey, design to specification, and give you a written, itemised price before any work or procurement begins.