TCN to Add 4,000MW to Nigerian National Grid

Sule Abdulaziz, acting managing director at TCN, shared that the company had acquired a new office for its Project Implementation Units, which were created to increase the delivery of projects. The PIUs are responsible for adding the additional megawatts to the grid.

The new office for the Project Implementation Units houses 4 project units financed by donor agencies including the World Bank, Agence Francaise de Development (AFD), the African Development Bank (AfDB) and the Japanese International Cooperation Agency (JICA).

The Project Implementation Units were specialised units of TCN that would ensure critical transmission line and substation projects were delivered within specification, quality and timeframe.

Sule Abdulaziz added that the project units were already implementing projects that would enhance TCN’s 8,100MW grid capacity.

“Management is also making such efforts in the mainstream TCN, which has empowered the company to successfully transmit successive all time generation peaks achieved in the power sector, the latest being 5,801 MW,” Sule Abdulaziz said.

The general manager and coordinator of the Project Implementation Units office at TCN, Joseph Ciroma, commented on a number of projects being supervised by the Project Implementation Units. These include a greenfield Agence Francaise de Development (AFD) funded Abuja high voltage transmission feeding scheme.

“The project will bring an additional of 330 kV transmission line through Lafia, bringing to 3, the source of bulk power transmission into Abuja,” Joseph Ciroma said.

“The additional bulk power supply into Abuja will secure reliability and availability of power supply in the Federal Capital Territory,” Joseph Ciroma stressed.

Unpacking the TCN grid upgrade

The World Bank project unit, according to Joseph Ciroma, will address a nationwide transmission upgrade, which will impact 30 power transformers over the course of the upgrade.

Joseph Ciroma said further that 30 MVA transformers would be replaced with 60 MVA and 100 MVA depending on the planned capacity upgrade for the substations. “The 30 MVA transformers that will be removed will be installed in areas with lower electricity demand. This will invariably, add to the capacity of the network.”

“The AfDB project unit is working on strengthening the 330 kV Alaoji to Onitsha (Anambra State) transmission line.
”The line currently evacuates only 400 MW of power but after the line is re-conductored [sic] its capacity will increase to 1,200 MW which is 3 times the current capacity.”

Joseph Ciroma continued that the AfDB will provide funding for a new transmission line from Benin to Delta to increase power evacuation on that route from 400 MW to 1,200 MW.

An additional 1,200 MW capacity transmission line will complement the 400 MW capacity line running from Kaduna to Kano, according to Joseph Ciroma.

Dawaki also said that through JICA-funded project unit targets transmission projects in Lagos and Ogun States, TCN would build four 330 kV substations, 2 of 132/33 kV substations and 4 of 120MW capacity 330 kV transmission lines.
These lines would also connect the West African Power Pool to enable Nigeria to export more power when the projects were completed.

TCN had recently installed a new 60 MVA, 132/33 kV power transformer in its Kubwa substation, Abuja. The new power transformer radiated 3 feeders, including the Dawaki, Usuma Dam and Deidei feeders.

“The feeders will make more bulk electricity available for Abuja Disco to take to its consumers in the areas concerned,” Dawaki said.