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.

Our Connectivity

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

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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ISO Newsletter

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

View Grid Performance

System Performance

Highest Frequency 50.61 Hz
Lowest Frequency 49.32 Hz
Peak Generation 4,434.50 MW
Lowest Generation 3,770.20 MW
Total Energy Sent Out 98,508.31 MWH

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Top News

OCT 31
310 New System Operators Commence Capacity Building Program In Osogbo, Osun State

The Transmission Company of Nigeria (TCN) has commenced the training of 310 new engineers in the Independent System Operation sub-sector to acquaint them with modern skills and strategies to effectively and responsibly operate the rapidly growing Nigerian Power Grid...

JUL 12

As part of efforts to enhance effective operations in the system, the management of the Transmission Company of Nigeria (TCN) has carried out...…..

JUL 11

The Federal Government said, it is targeting 2019 for the attainment of 10 Gigawatts (GW) of electricity in the national grid through the implementation of the Transmission, Rehabilitation and Expansion Programme (TREP) of Transmission Company of Nigeria (TCN).

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