Why does Texas have its own power grid? Curious Texas investigates

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Why does Texas have its own power grid? Curious Texas investigates
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Editor’s note: With millions of customers out of power as Texas grapples with record-low temperatures, interest has been high in the agency that oversees...

System operators work in the command center of the Electric Reliability Council of Texas in Taylor. About 90 percent of Texas' electric load is managed by ERCOT.Editor’s note: With millions of customers out of power as Texas grapples with record-low temperatures, interest has been high in the agency that oversees the Texas-only power grid, the Electric Reliability Council of Texas. We’re republishing this story, originally published earlier this year, to explain ERCOT’s unique history.

Regional utilities in Texas created limited connections during World War II when the war effort demanded large amounts of power be sent to the Gulf Coast. The connections enabled power to flow from all over Texas to where it was needed most. That grid became the Texas Interconnected System. The power grid doesn’t actually cover the entire state, Magness said. ERCOT manages about 75% of Texas’ land area and powers roughly 90% of its residents. Not included are El Paso, parts of northeast Texas and parts of southeast Texas .

Magness said the connections in Mexico are minor compared to how much electricity Texans typically use. On a summer day, the demand is well over 74,000 megawatts, he said.

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