The Nigerian electricity grid lost 1,615 megawatt, last weekend, as gas supply was cut off from nine Generation Companies, GenCos, Daily Trust reports.
The trend in electricity generation recently and found that Nigeria attained the highest peak generation of 4,932MW this year on January 8, 2018 after a burnt gas pipeline was restored.
The grid had continued to hover around 4,500MW since then but dropped to 4,279MW last Thursday for some reasons.
As at last week Friday, the peak power generation had dropped to 3,986MW and further dipped to 3,897MW on Saturday, available data from the Nigeria System Electricity Operator (NSO), a section of the Transmission Company of Nigeria (TCN), showed.
The peak generation plunged as eight out of the 29 power plants did not operate in the early hours of Friday. The affected Generation Companies (GenCos) included Sapele Steam, Alaoji National Integrated Power Project (NIPP), and Olorunsogo NIPP.
The others were Gbarain NIPP and Azura-Edo Independent Power Plant (IPP) that was commissioned last month, ASCO, AES and Paras Energy records showed.
Analysis of data by this paper also showed that the lowest generation on Saturday was 2,686MW as five more GenCos went down during the off-peak period. They were Egbin Steam, Egbin Gas, Omotosho Gas, Olorunsogo Gas and Omotosho NIPP.
The analysed data obtained on Sunday revealed the causes of the plunge in electricity generation which also affected power supply to Nigerians: the electricity grid lost 1,615MW resulting from a cut in gas supply to nine GenCos.
Four of the affected GenCos are along the gas supply route of Escravos Lagos Pipeline System (ELPS) that was reportedly blown a fortnight ago.
The incident on the western gas supply route occurred some five days after a section gutted by fire was repaired and restored.
Although the Nigerian National Petroleum Corporation (NNPC) had assured that the latest pipeline incident would not affect power generation. However in the western region, Omotosho Gas and Olorunsogo Gas respectively lost 190MW to gas cut; Omotosho NIPP and Olorunsogo NIPP lost 240MW and 360MW respectively in the same axis.
In the Eastern axis, gas supply cut affected Alaoji’s NIPP with a loss of 240MW. In the North central, Geregu NIPP lost 145MW while Geregu Gas lost only 5MW to gas cut.
Two GenCos were affected in the southern part: Omoku NIPP lost 240MW and Ihovbor-Benin lost 225MW to gas cut.
Another constraint that dipped power generation by 467MW last weekend was transmission lines inadequacy which affected four GenCos. Odukpani NIPP lost 230MW, Ibom Power lost 115MW and Rivers IPP lost 50MW in the South-south. Only Paras Energy which lost 72MW was affected in the West.
Energy load rejection at the distribution side which was often high to about 2,000MW in 2017 dropped to 378MW on Friday due to the insufficient power generation caused by the gas cut.
However Shiroro hydropower lost 178MW and Afam GenCo lost 200MW to the cut. The dry season and its attendant drop in water level affected Shiroro hydropower GenCo where 290MW was lost, data from TCN also revealed.
