Williams Partners L.P. (NYSE: WPZ) today announced its expanded Geismar plant now expects ethylene production for sale to begin in January as commissioning efforts for the project near completion.

“This commissioning effort has been especially challenging after the uncharacteristically hard shutdown at the time of the incident and as a result of being out of commission for more than a year,” said John Dearborn, Senior Vice President of NGL & Petchem Services. “Safety is our number one priority and guides all milestones related to this project as we work to rebuild our reputation as a safe and reliable supplier of olefins.”

Capacity at the Geismar plant is now 1.95 billion pounds of ethylene per year. Williams Partners' share of the total capacity of the expanded plant is approximately 1.7 billion pounds per year. Williams (NYSE: WMB) owns controlling interest and is the general partner of Williams Partners.

About Williams Partners

Williams Partners L.P. owns and operates both on-shore and off-shore assets of approximately 15,000 miles of natural gas gathering and transmission pipelines, 1,800 miles of NGL transportation pipelines, an additional 11,000 miles of oil and gas gathering pipelines and numerous other energy infrastructure assets. The partnership's operated facilities have daily gas gathering capacity of approximately 11 billion cubic feet, processing capacity of approximately 7 billion cubic feet, NGL production of more than 400,000 barrels per day and domestic olefins production capacity of 1.95 billion pounds of ethylene and 114 million pounds of propylene per year.

For more information about Williams Partners, visit www.williamslp.com.

Portions of this document may constitute “forward-looking statements” as defined by federal law. Although the company believes any such statements are based on reasonable assumptions, there is no assurance that actual outcomes will not be materially different. Any such statements are made in reliance on the “safe harbor” protections provided under the Private Securities Reform Act of 1995. Additional information about issues that could lead to material changes in performance is contained in the company’s annual reports filed with the Securities and Exchange Commission.