Michael W. O'Donnell

Columbia Energy Group explores, produces, stores and distributes natural gas. The company engages in the transmission and distribution of natural gas in the United States. The company was founded in 1926 and is located in Merrillville, IN.

NiSource Energy Partners LP owns and operates natural gas transportation pipelines and related assets. The company's primary asset is its Columbia Gulf pipeline system, which comprises 3400 miles of pipeline in Louisiana, Tennessee, Mississippi and Kentucky. NiSource Energy Partners derives the majority of its revenue through firm contracts, with customers paying capacity reservation fees and incremental usage fees based on the volume of gas transported. The company also derives a portion of its revenue from interruptible contracts, in which customers pay for utilization of the pipeline but are not guaranteed capacity availability. NiSource Energy Partners LP was formed by NiSource, Inc. in 2006. NiSource, Inc. owns the company's general partner and provides management services to the company. NiSource Energy Partners is headquartered in Merrillville, IN.