Why Electricity Supply Remains Unstable Nationwide – TCN

Why Electricity Supply Remains Unstable Nationwide – TCN

The Transmission Company of Nigeria (TCN) has explained why electricity supply in the country has remained erratic in recent times, blaming it on low power generation by the power generation companies.

In a statement signed by TCN’s, General Manager, Public Affairs, Ndidi Mbah, reports that TCN has reduced the load allocation to distribution companies was not correct.

“For clarity, TCN does not generate electricity and therefore can only transport cumulative generation from all the generation companies nationwide to distribution load centres. The distribution companies are responsible for end-users consumption.

“TCN allocates power to distribution companies based on approved percentage (formula approved by NERC), of the total generation available per hour or on day-ahead nomination.

Mbah maintained that the cumulative generation nationwide is low and generation companies have attributed this to several factors including poor gas supply, fault in generating units of generating companies, scheduled and unscheduled maintenance, all of which have caused most power generating companies to limit their generation, and sometimes not generate at all.

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“Also, within the same period, Jebba Hydro and Shiroro Power Generating Stations were either out or had limited generation, causing additional loss of 232MW from the grid, while other power generating plants such as Omotosho units 3&4, Olorunsogo units 1, Delta units 10 &20, Afam VI unit 13, Ihovbor NIPP units 4, Geregu NIPP units 22&23 and Odukpani NIPP units 2, 4 & 5, have also been out either on fault or for scheduled maintenance, causing a further loss of about 3,180MW from the grid.

He said a combination of the above scenario have persisted and the total effect on the grid is persistent low generation, which TCN Operators have had to strive to dispatch in a way that will not jeopardize the stability of the grid.

“More recently, from the 1st to 4th of March, 2022, there was generation shortfall due to water management in Shiroro and Jebba hydro with the loss of 307MW and 125MW respectively from both stations. Within the same period, there were fault and technical problems in Egbin, causing 514MW shortfall and in Geregu causing 230MW shortfall, while reported fault at Alaoji NIPP reduced generation from the substation by 263MW.

TCN further reiterates that a combination of issues ranging from gas constraints, fault, and technical problems within generating plants caused persistent low generation and consequently low load allocation to Distribution Companies nationwide.

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