Head of Texas Grid Discusses Blackouts

The chief executive of ERCOT, the Texas grid operator, said that "extremely cold" temperatures and windy conditions caused valves, pipes and other equipment in some power plants to fail, which in turn triggered the need for rolling blackouts across Texas yesterday.

"There's really no pattern that we're observing," said Trip Doggett, in a press conference this afternoon. "It was spread across the state. No particular area of the state; no particular owner of the generation. It included units that were online that tripped offline. It also included units that were attempting to come online that were unsuccessful."

ERCOT ...

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