Hurricane Beryl battered Texas on Monday, leaving over 2 million homes and businesses without power. The storm unleashed torrential rains and high winds that forced major port closures, disrupted some of the nation’s largest oil/gas producers, and sparked travel delays at surrounding airports.

About 85% of the customers served by the Houston area’s top electric utility—CenterPoint Energy—lost power on Monday. By early Tuesday morning, about a million homes and businesses had seen their power restored as the utility deployed 10,000 workers to fix transmission and power lines.

“I do not have power at my house — I know what it’s like,” Houston Mayor John Whitmire on Monday night. 

It’s critical to note that Houston is a major energy port in the Western Hemisphere and also critical for US petrochemical production. Other surrounding ports were disrupted, and many of these are connected to global shipping lanes.

Reuters noted, “Oil refining activity slowed and some production sites were evacuated in the state that is the nation’s biggest producer of US oil and natural gas.”

Here’s more on the gas and shipping disruptions from Reuters: