About Dynegy

Contact Us

Corporate Headquarters
6555 Sierra Drive
Irving, TX 75039

Illinois Regional Office
1500 Eastport Plaza Drive
Collinsville, IL 62234

Ohio Regional Office
​312 Walnut Street, Suite 1500
Cincinnati, OH 45202

Vistra Energy
6555 Sierra Drive
Attn: Supply Chain
Irving, TX 75039
Telephone: 214.812.8000

For information, please Vistra Energy's supply chain operations page


The Dynegy Integrity Helpline is a toll-free phone line that allows you to ask questions and report ethics and compliance issues or concerns. This Helpline is answered by an independent service provider and is always available.