Iraq has begun reconstruction efforts on the Baiji Refinery, the Daily Star reports.

The government plans bring one unit online next year that will have the capacity to refine 70,000 barrels per day (b/d), the newspaper reports.

The refinery was captured by Islamic State militants in 2014. Prior to that, it was Iraq’s largest oil refinery, processing between 250,000 and 300,000 b/d, according to Stratfor.

It was recaptured in 2015, but, having been damaged during local fighting, it remained inoperable, according to the Daily Star.