DALLAS – It’s only March, but already Texans are being warned about the scorching summer heat.

ERCOT, the Electric Reliability Council of Texas, said the rolling power blackouts experienced in 2011 could be back in 2012.

“It will be a tight summer for us,” said President and CEO H.B. “Trip” Doggett. “If we have the kind of extreme summer we had last year, we have the potential for rolling outages.”

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