Regional Supplier
Transformer Supplier in Nigeria
IEC-certified power transformers and electrical equipment engineered for Nigeria's grid rehabilitation, industrial zones, oil & gas infrastructure, and massive electrification needs.
Nigeria, Africa's largest economy and most populous country with over 220 million people, faces a significant infrastructure challenge: bridging the gap between installed generation capacity and actual electricity delivery to end users. The national grid operates at 50Hz with transmission voltages of 11kV, 33kV, 132kV, and 330kV, managed by the Transmission Company of Nigeria (TCN) and distributed through 11 Distribution Companies (DISCOs). The standard distribution voltage is 415/240V three-phase.
The Nigerian power sector is undergoing critical transformation through the Presidential Power Initiative (Siemens PPI) aimed at modernizing transmission and distribution infrastructure. With an estimated national transformer deficit in the tens of thousands of units, grid rehabilitation, industrial zone electrification (Lagos, Kano, Port Harcourt), and off-grid solar mini-grid deployment are creating sustained demand for distribution transformers, switchgear, and substation equipment.
Ziyao Power supplies a comprehensive range of IEC-compliant electrical equipment configured for Nigeria's operating environment. Our portfolio includes hermetically sealed S22-M oil-immersed transformers, SCB13/SCB18 dry-type cast resin transformers, KYN28 MV metal-clad switchgear, GCS LV switchgear panels, DW45 air circuit breakers, and YB Series prefabricated substations. All equipment is designed for tropical climate conditions with appropriate cooling margins, corrosion protection for coastal and Niger Delta installations, and certification to meet SON (Standards Organisation of Nigeria) and SONCAP requirements.
Presidential Power Initiative (Siemens PPI)
The $1.9 billion grid modernization program targets rehabilitation of 105 transmission substations and distribution networks. Phase 1 alone requires thousands of distribution transformers (33/11kV and 11/0.415kV) and associated switchgear.
Massive Transformer Deficit
Nigeria has an estimated deficit of over 30,000 distribution transformers. DISCOs across all regions urgently need replacement units for overloaded and failed transformers in residential and commercial areas.
Industrial Zone Electrification
Major industrial clusters in Lagos (Agbara, Ikeja, Apapa), Ogun State, Kano, and Port Harcourt require reliable substations and auxiliary transformers. Manufacturing and processing industries need dedicated transformers and switchgear.
Oil & Gas Sector
Nigeria is Africa's largest oil producer. Upstream extraction, refining (Dangote Refinery), gas processing, and petrochemical complexes require explosion-proof and high-reliability transformers and MV switchgear.
Solar Mini-Grids & Off-Grid
With over 80 million Nigerians lacking grid access, the Rural Electrification Agency (REA) and private developers are deploying solar mini-grids requiring step-up transformers, inverters, and distribution switchgear.
Population & Urbanization
A population of 220 million growing at 2.5% annually, coupled with rapid urbanization in Lagos, Abuja, Kano, and Ibadan, drives constant expansion of distribution networks requiring transformers and associated equipment.
Oil-Immersed Distribution Transformers
S22-MHermetically sealed S22-M series for pole-mounted and ground-mounted installations in DISCO distribution networks and industrial applications across Nigeria.
Low-loss design compliant with Nigeria's Minimum Energy Performance Standards (MEPS).
View S22-M Series →Dry-Type Cast Resin Transformers
SCB13Fire-safe SCB13/SCB18 dry-type transformers for indoor use in commercial buildings, hospitals, data centers, and high-rise developments in Lagos and Abuja.
MV Metal-Clad Switchgear
KYN28KYN28-12 indoor switchgear with vacuum circuit breakers for TCN substations, DISCO injection substations, and industrial MV distribution.
Air Circuit Breakers (ACB)
DW45DW45 series draw-out air circuit breakers for LV main distribution panels and industrial MCCB backup protection.
DISCO Distribution Networks
Pole-mounted transformers and 33/11kV primary substation equipment for the 11 DISCOs serving residential and commercial customers across Nigeria's six geopolitical zones.
Oil Refining & Petrochemical
Explosion-protected transformers and switchgear for the Dangote Refinery, gas processing plants, and upstream extraction facilities in the Niger Delta.
Industrial Clusters
Dedicated substation packages for manufacturing in Agbara, Ikeja, Otta, and other industrial zones requiring 11kV and 33kV supply with GCS LV distribution.
Solar Mini-Grids
Cost-effective transformers and compact substations for REA and private solar mini-grid projects powering off-grid communities.
Commercial & High-Rise
Dry-type transformers and LV switchgear for commercial towers, shopping malls, and mixed-use developments in Lagos, Abuja, and Port Harcourt.
Data Centers
Low-noise, high-efficiency dry-type transformers for Nigeria's growing data center market supporting fintech, telecom, and cloud infrastructure.
Typical 15MVA Injection Substation — Nigeria Grid
Reference electrical configuration for a 33/11kV DISCO injection substation serving urban and semi-urban loads. Equipment selection based on TCN and DISCO standard specifications.
| Equipment | Qty | Specification |
|---|---|---|
| Power Transformer | 2 | S22-M 7.5 MVA, 33/11kV, ONAN, 50Hz |
| Distribution Transformer | 3 | S22-M 500 kVA, 11/0.415kV, ONAN, 50Hz |
| MV Switchgear (33kV) | 1 set | KYN28-12 adapted, 33kV, 1250A, 25kA |
| MV Switchgear (11kV) | 1 set | KYN28-12, 11kV, 1250A, 31.5kA, vacuum CB |
| LV Main Distribution Panel | 2 sets | GCS withdrawable, 415V, 4000A, 65kA |
| Protection & SCADA | 1 system | Microprocessor relays, IEC 61850, RTU integration |
Q: What is SONCAP certification and do your products have it?
SONCAP (Standards Organisation of Nigeria Conformity Assessment Programme) is the mandatory pre-shipment verification program for regulated products imported into Nigeria. All electrical equipment must have SONCAP certification before shipment. Our transformers and switchgear come with IEC type test certificates and manufacturer test reports that form the basis for SONCAP certification. We work with accredited SONCAP agents to process the Certificate of Conformity (Product Certificate and SONCAP Certificate) before shipment, streamlining the import and customs clearance process.
Q: What transformer capacities are most commonly needed in Nigeria?
For DISCO distribution networks, the most common ratings are 200kVA, 300kVA, 500kVA (11/0.415kV distribution transformers) and 2.5MVA, 5MVA, 7.5MVA (33/11kV power transformers for injection substations). We stock these common ratings and can supply larger units up to 2500kVA distribution and higher MVA power transformers on order. All units are wound for Nigeria's 50Hz grid with Dyn11 vector group (standard for Nigerian distribution transformers).
Q: How does the tender process work for DISCOs and TCN?
Nigeria's 11 DISCOs and TCN procure transformers and electrical equipment through competitive bidding. Tenders are typically published on the procuring entity's website, in national newspapers, and on the Bureau of Public Procurement (BPP) portal. As a manufacturer, we support your bid by providing complete technical documentation: IEC type test certificates, factory test reports, ISO 9001 certificate, SONCAP product certificates, manufacturer's authorization, and detailed compliance statements against tender specifications. We can also provide bid bonds and performance guarantees where required.
Q: What are your shipping and logistics arrangements to Nigeria?
We ship to Nigeria via sea freight to Lagos (Apapa Port or Tin Can Island Port) and Port Harcourt (Onne Port). Standard sea freight transit time from major export ports is 30–40 days. We handle all export documentation including commercial invoice, packing list, bill of lading, SONCAP Certificate, and Certificate of Origin for ECOWAS trade preferences. Door-to-door delivery including customs clearance and inland transport is available upon request. For urgent requirements, air freight to Murtala Muhammed International Airport (Lagos) or Nnamdi Azikiwe International Airport (Abuja) is available.
Q: Can your transformers handle Nigeria's grid instability?
Yes. We design transformers for the voltage fluctuations and frequency variations common in developing grids. Our S22-M series includes enhanced tap-changer range (±5% as standard, wider range optional), higher BIL (Basic Insulation Level) margins, and robust mechanical design to withstand frequent switching operations. We also provide under-voltage and over-voltage protection relay configurations in switchgear to protect transformers from extreme grid conditions.
Q: Do you provide after-sales support and spare parts in Nigeria?
We provide comprehensive after-sales support including remote diagnostics, on-site commissioning and testing by our engineering team, and spare parts supply. We can arrange local service partner support for routine maintenance and emergency repairs. Spare bushings, gaskets, tap changers, and protection relays can be dispatched via air freight within 1–2 weeks. All transformers carry a 24-month warranty from commissioning (maximum 30 months from shipment).
Industrial Power Distribution Solution
Complete substation solutions for Nigeria's industrial zones — transformers, MV switchgear, and LV panels engineered for high-reliability manufacturing operations in Lagos, Ogun, and Kano.
Learn more →Solar Farm Power Solution
Step-up transformers and grid interconnection switchgear for Nigeria's growing utility-scale solar projects and REA mini-grid programs serving off-grid communities.
Learn more →Data Center Power Solution
Low-noise dry-type transformers and reliable MV/LV switchgear for Nigeria's expanding data center market supporting fintech, telecom, and cloud service providers.
Learn more →Indonesia 550kW Off-Grid Solar Project
Containerized transformer and switchgear solution for a remote off-grid solar installation — directly applicable to Nigeria's solar mini-grid and rural electrification programs.
View Case Study →Distribution Network Rehabilitation
Supply of 500kVA and 300kVA distribution transformers for DISCO network reinforcement in a major southwestern city. Includes SONCAP-certified documentation, factory test reports, and 33/0.415kV and 11/0.415kV configurations for injection substation downstream networks.
Industrial Cluster Power Infrastructure
Multi-unit transformer package including 2×2.5MVA oil-immersed transformers, KYN28 MV switchgear, GCS LV panels, and DW45 ACBs for a manufacturing cluster. Configured for 33kV TCN supply with redundancy switching for critical process loads.
Need a Transformer Supplier for Nigeria?
Tell us your project requirements — voltage, capacity, quantity — and we'll provide a competitive quotation with SONCAP certification and full IEC compliance documentation.