Luminant Fleet Provides Critical Generation During Level 2 ERCOT Energy Emergency Alert

Dallas -

Luminant's baseload power plant fleet, including two nuclear units and 12 lignite-fueled units, as well as multiple peaking natural gas units, provided much-needed generation today during ERCOT's level two energy emergency alert.

The company commends its dedicated team of 4,000-plus employees for their hard work and diligence in maximizing generation throughout the alert.

Today marks the second time this summer ERCOT has declared a level two energy emergency alert.

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About Luminant

Luminant, a subsidiary of Energy Future Holdings Corp., is a competitive power generation business, including mining, wholesale marketing and trading, and development operations. Luminant has more than 15,400 megawatts of generation in Texas, including 2,300 MW fueled by nuclear power and 8,000 MW fueled by coal. The company is also the largest purchaser of wind-generated electricity in Texas and fifth largest in the United States. EFH is a Dallas-based energy holding company that has a portfolio of competitive and regulated energy subsidiaries, primarily in Texas. Visit www.luminant.com or www.energyfutureholdings.com for additional information.

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