What caused the 28 January Nigeria national grid collapse?

NISO cited tripping on multiple 330kV lines after a morning peak of 4,762 MW, which cascaded into a nationwide Nigeria blackout and output near 39 MW at 11 a.m. The pattern suggests weak protection, limited redundancy, and slow fault isolation across the transmission backbone.

Which UK-linked companies could feel the impact?

London-listed firms with Nigeria operations, such as telecoms, energy producers, consumer goods, and cement, face higher generator costs and potential service disruptions. Banks may see branch downtime and slower SME repayments. The impact depends on outage length, fuel access, and each firm’s on-site power resilience.

How could this affect inflation and the naira?

More generator use raises logistics and retail costs, lifting inflation if outages persist. Diesel imports can increase dollar demand, pressuring the naira and FX reserves. That may raise hedging costs and complicate dividend repatriation for GB investors until stability improves and transmission reliability strengthens.

What policy moves should investors watch now?

Focus on power transmission reforms: SCADA coverage, spinning reserve, grid-code enforcement, and added redundancy on 330kV corridors. Track decisions on electricity tariffs Nigeria, metering, and loss reduction. Credible milestones and funding plans would lower outage risk and improve the investment backdrop after repeated grid failures.

Global Market Insights

Nigeria Grid Down Again: January 28 Outage Flags Tariff, Fuel Risks

ByHuzaifa Zahoor January 28, 2026January 28, 2026

Nigeria national grid collapse on 28 January triggered a nationwide Nigeria blackout, the second in four days. Output fell to 39 MW at 11 a.m. from a 4,762 MW peak. NISO cited tripping on multiple 330kV lines. For GB investors, repeated outages raise risks to margins, inflation, and currency flows. We explain immediate market impacts, who is exposed, and why power transmission reforms, not tariffs alone, will shape the investment outlook.