Nigeria, Dec. 17 -- The Nigerian Independent System Operator (NISO) on Tuesday said electricity generation on the national grid has dropped due to gas supply constraints caused by a gas pipeline vandalisation.

NISO, in a statement signed by its management, said the incident occurred within the upstream gas supply network, affecting gas availability to several power generation facilities.

"The Nigerian Independent System Operator (NISO) wishes to inform the general public and sector stakeholders that electricity generation on the national grid has dropped due to gas supply constraints arising from the reported incident of gas pipeline vandalisation within the upstream gas supply network.

"The incident affected gas availability to a numb...