Construction of
HV Substations
ENERTEC is establishing itself in the market for high-voltage (HV) substation construction (63 kV, 90 kV, 225 kV). From civil works to primary equipment, from protection to control systems - end-to-end support for power transmission in West Africa.
A fast-growing
player in HV substations
Building on its proven expertise in MV distribution networks, ENERTEC is taking a strategic step forward by establishing itself in the HV substation construction market. This segment, essential to large-scale power transmission, is experiencing sustained growth in West Africa, driven by the continent's major electrification programs.
Our engineering teams cover the entire chain: from feasibility studies through civil works, primary equipment and digital protection systems, all the way to commissioning and acceptance of the works.
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A complete offering,
from design to commissioning
ENERTEC is involved in every phase of HV substation construction, with integrated project engineering and partnerships with the world's leading equipment manufacturers.
Complete design of your HV substation, from preliminary design to detailed construction drawings.
- Feasibility studies and risk analysis
- Detailed engineering (single-line diagrams, civil works drawings)
- Protection and short-circuit studies
- Tender documentation
Construction of the infrastructure and masonry works the substation requires.
- Transformer and structure foundations
- Control buildings and MV switchgear rooms
- Fences, gates and access roads
- Earthing networks and ground wire
Supply and installation of the high-voltage equipment for the substation switchyard.
- Power transformers (HV/MV)
- HV circuit breakers and disconnectors
- Busbars and aluminum connections
- Current and voltage transformers
Protection systems built to IEC 61850 standards to keep the network safe.
- Digital protection relays (distance, differential)
- Network automation (reclosers, couplers)
- Teleprotection (remote tripping) systems
- Protection testing and calibration
Local and remote automation and supervision of substation equipment.
- Digital control panels
- Local human-machine interface (HMI)
- SCADA integration and remote control
- IEC 61850 GOOSE/MMS communication
Testing, acceptance trials and training of substation operating teams.
- Functional and performance tests
- Step-by-step energization tests
- Training of operators and maintenance staff
- Commissioning assistance
Our 5-phase project delivery process
Feasibility, site selection, network analysis, definition of the single-line diagram and voltage level.
Construction drawings, design calculations, equipment specifications, protection and short-circuit studies.
Construction of the civil works, procurement and acceptance of primary and secondary equipment from suppliers.
Equipment erection, wiring of protection and control cabinets, earthing and HV connections.
Complete testing, energization, protection tests, team training and handover of as-built documentation.
Our HV substation projects
ENERTEC is building partnerships for the construction of 63–225 kV substations in West Africa.
ENERTEC is launching its HV Substations division and building partnerships with leading equipment manufacturers for the construction of 63 kV, 90 kV and 225 kV transmission substations in West Africa.
Feasibility studies and detailed engineering for HV substations as part of national transmission grid extension projects, in collaboration with regional operators.
An HV substation project in West Africa?
Our specialist engineers assess your needs and propose a tailor-made, turnkey solution.