Ecuador's largest refinery came back online Friday after operations had been temporarily halted due to a power outage, state oil firm Petroecuador said.

The 110,000-barrel-per-day Esmeraldas plant was up and running again after a sequential start-up of its operating units was concluded, Petroecuador's head of refinery operations, Carlos Pareja Yannuzzelli, said in a statement.

He said that after Thursday's electricity problems were resolved, "technicians carried out the respective evaluations and work to resume the production of derivatives."

Thursday's shutdown was the second this year at Esmeraldas, where a power failure in April caused the plant to go offline for nearly a week.

The country also has two other smaller refineries: La Libertad in the southwestern coastal region and Amazonas in the northeast.

Ecuador's crude output currently stands at 500,000 barrels per day and oil is the country's main export product. EFE