Joint Venture Nearing Completion of Natural Gas Storage Project in Louisiana

SUGAR LAND--May 7, 2008--Researched by Industrial Info Resources (Sugar Land, Texas)--Liberty Gas Storage LLC is nearing completion of a natural-gas-storage cavern in Louisiana's Calcasieu and Beauregard parishes. Liberty Gas is a partnership between Sempra Pipelines & Storage (75%), a Sempra Energy (NYSE:SRE) (San Diego, California) company, and ProLiance Energy (25%) (Indianapolis, Indiana).