About SO

System Operation (SO) being a semi-autonomous sector under the Transmission Company of Nigeria (TCN) is responsible for operating the transmission system in a safe and reliable manner. The TCN network spreads to all parts of the country and across the border to several neighbouring countries, and Nigeria is a net exporter of power.
The transmission system in Nigeria comprises 330 kV and 132 kV circuits and substations. The thermal generation is located in the south of the country, generally near to the sources of gas, while the hydro generation is located further north at Jebba, Kainji and Shiroro. Distribution is split into 11 zones and the distribution networks comprise 33 kV, 11 kV and low voltage circuits. System nominal frequency is 50 Hz.

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Our Connectivity

The transmission system in Nigeria comprises 330 kV and 132 kV circuits and substations.

The National Grid The transmission system in Nigeria comprises 330 kV and 132 kV circuits and substations

West African Power Pool Network Nigeria Transmission Network is connected with other neighbouring countries via interconnectors

Cross-Section of Shiroro Transmission Switch Yard

Major Goals of a Smart Grid

* Optimize Efficiency	* Monitor Problems to Reduce Outages
* Integrate Renewable Distributed Power Generation	* Reduce Peak Power Demands

Core Functions

Monitoring system parameters while identifying the requirements for maintaining system reliability and stability
Maintaining and enhancing system reliability, stability and security
Ensure a stable frequency within the operational limits of 50Hz± - 0.4% with guaranteed quality voltage at all levels and uninterruptible power supply with minimal loss.
Conduct system studies, fault analysis, load flow analysis and planning of the power system (real time and future)

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Reports

SEP 22

OPERATIONAL REPORT

ISO Newsletter

JUL 03

Operational Report

Independent System Operator publishes newsletters on a regular basis to give readers insight and information on ISO's operations

Useful Links

View Grid Performance

System Operator Notices

TCN is NDPR Compliant!

System Performance

21/09/2023
Highest Frequency	50.86 Hz
Lowest Frequency	49.08 Hz
Peak Generation	4,560.20 MW
Lowest Generation	4,012.90 MW
Total Energy Generated	101,545.43 MWH
Total Energy Sent Out	100,399.39 MWH

Top News

MAY 22

TCN ORGANISES TRAINING ON NSONG WEB PORTAL USAGE

TCN recently organised a training on NSONG web portal at the TCN National Control Centre (NCC)

MAR 09

TCN INAUGURATES COMMITTEES TO REVIEW ITS 20-YEAR LEAST COST EXPANSION MASTER PLAN

Generation and Distribution Steering Committees to review the report of the TEP

MAR 08

ELECTRICITY STAKEHOLDERS REVIEW METERING CODE

In line with the extant law and provisions of Nigerian Electricity Regulatory Commission (NERC), the

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