FAQs

Transmission Company of Nigeria (TCN) is one of the successor companies that emerged from the unbundling of National Electric Power Authority (NEPA) and Power Holding Company of Nigeria (PHCN) and the subsequent privatization of the companies. TCN is charged with the responsibility of wheeling power from power generating companies (Gencos) to distribution Companies (Discos).

The job entails maintaining a network of power transmission infrastructure (Transmission lines and associated substations at the voltage level of 330kV and 132kV and an independent System Operator)

TCN has its presence in all 36 states of the federation, the Federal Capital Territory as well as three other lines supplying the West African Power Pool (WAPP)

No. TCN only evacuate electricity from Gencos to Discos.

It is a network of interconnected power generation, transmission and distribution facilities for the purpose of providing a reliable power supply in a cost effective manner.

They are the three business units in TCN created to handle the day to day activities of the company:

TSP-Transmission Service Provider

SO-System Operations

MO-Market Operations

No. the electricity market handles all market financial settlements of the stakeholders of the power supply delivery chain.

Yes. TCN reports the Minister of Power, Works and Housing.

TCN Headquarters is located at no. 14 Zambezi Crescent, Maitama, Abuja, in the Federal Republic of Nigeria.

TCN is responsible for evacuating electric power generated by the electricity generating companies (GenCos) and wheeling it to distribution companies (DisCos). It provides the vital transmission infrastructure between the GenCos and the DisCos’ Feeder Sub-stations.

Where as:

AEDC which is One of the Electricity Distribution Companies (Discos) provide last mile services in the electricity supply value chain. DisCos provide the connection between customers and the electricity grid own by TCN and as such, Discos are responsible for transforming or stepping down electricity from the high voltage of 132 kV at the transmission level, to the lower voltage levels of 33kV/11kV/0.415kV depending on the category of customer.

1. Transmission Service Provider (TSP) The TSP oversees the development and maintenance of the transmission infrastructure. It is responsible for the national inter-connected transmission system of substations and power lines and providing open access transmission services. Its role is to maintain the physical infrastructure that make up the transmission grid and expand it to new areas.

2. System Operations (SO) The SO manages the flow of electricity throughout the power system from generation to distribution companies. It operates the Grid Code for the Nigerian Electricity Supply Industry (NESI). The SO has the responsibility for ensuring that the transmission grid lines are reliable and maintaining the technical stability of the grid through its operations of planning, dispatch, and control of the electricity on the grid.

3. Market Operations (MO) The MO administers the market rules of the NESI. It is responsible for the administration of the Electricity Market and promoting efficiency in the market.

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