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.

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


ISO Newsletter

DEC 18
Independent System Operator publishes newsletters on a regular basis to give readers insight and information on the ISO's operations

Announcements

 

TCN gets interim CEO

Usman Gur Mohammed

View Grid Performance

System Performance

25/03/2017
Highest Frequency 51.50 Hz
Lowest Frequency 48.93 Hz
Peak Generation 4,093.90 MW
Lowest Generation 3,354.30 MW
Total Energy Sent Out 85,959.95 MWH

Top News

MAR 09
TCN Inaugurates New Power Equipment To Improve Power Supply

ower supply in Lagos and Ogun States is set to improve with the inauguration of several power equipment at the 330kV Transmission Substation in Ayobo, Lagos State.

MAR 06
Drop In Voltage In Lagos Area - Remote Cause

The voltage problem in Lagos was as a result of inadequate generation from Egbin Power Station sequel to gas inadequacy. Egbin, with a capacity..

MAR 02
TCN Gets An Interim Managing Director/CEO

The Federal Government of Nigeria has appointed Mr Usman Gur Mohammed as the Interim Managing Director/CEO of the Transmission Company of Nigeria...

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