A spokesman for Nigeria’s Dangote refinery said Tuesday that the country would not see a petrol shortage despite an ongoing strike by a union representing fuel tanker drivers.

Before last year’s opening of the Dangote refinery, with a capacity of 650,000 barrels per day, Nigeria had to import almost all its petrol despite being a major oil producer.

Critics pointed to years of neglect and mismanagement of government-owned refineries.

The Dangote refinery has driven down prices of petrol for consumers while also shaking up long-entrenched players in Nigeria’s oil sector, marred by decades of corruption.

But it has also sparked monopoly fears as it becomes a powerful player backed by Africa’s richest man, Aliko Dangote.

Last month, the refinery was set to deploy a fleet of thousands of trucks powered by compressed natural gas to distribute its petrol nationwide, an initiative that has been delayed due to logistics issues.