The lightning strike caused a plant-wide electrical outage, OCI said in a filing with the Texas Commission on Environmental Quality (TCEQ).
The site's ammonia capacity is 265,000 tonnes/year. The methanol capacity is 730,000 tonnes/year.
In the fourth quarter, OCI plans to shut down the plant to complete a debottlenecking project. When finished, the plant's capacity will rise 25% to 912,500 tonnes/year. Ammonia capacity will rise 15% to 305,000 tonnes/year.
Additional reporting by Lane Kelley