Extreme Heat Strains Central US Power Grids

Extreme heat is currently sweeping across the central United States, creating significant pressure on regional power grids. According to reporting from the Financial Post, baking temperatures are affecting areas from the Rocky Mountains to the Mississippi River and are expected to extend into the Gulf Coast for the remainder of the month.

The National Weather Service has issued heat warnings and advisories from Montana to Texas. In Dallas, temperatures are projected to reach 100 F on Saturday and remain above that level through at least Wednesday, with humidity making it feel as high as 107 F. Meanwhile, Phoenix may see highs of 117 F on Saturday.

This weather pattern is driving rising energy demand. The Financial Post reports that the Midcontinent Independent System Operator and the Southwest Power Pool, which together cover portions of at least 20 states, have indicated that loads may rise. Additionally, a large high-pressure system causing stagnant air could potentially restrict wind-generated power during peak periods.

The pattern is likely to persist through the end of the month, said Bob Oravec, a senior branch forecaster with the US Weather Prediction Center. The Weather Prediction Center notes that 89 daily high temperature records and 229 overnight records could be threatened or broken on Saturday, with Rapid City, South Dakota, forecast to reach a record 105 F on Sunday. While the central US faces these extremes, the East Coast remains cooler, with New York City's Central Park forecast to reach 81 F Saturday and 83 F Sunday.