Southern Company spokeswoman Stephanie Kirijan confirms the bomb threat was found Monday evening at the Southern Power biomass plant in Sacul, Texas.
Nacogdoches County Sheriff Thomas Kerss told the Daily Sentinal the power company and the onsite construction firm decided to close until after Thanksgiving even though a deadline on the note had passed by several hours when it was found.
Kerss says the threat is taken seriously because a power plant is considered a national security interest.
The company says no fuel load deliveries were scheduled this week because of the holiday.
Kerss says the shutdown will lead to a $1.1 million loss.