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Home > About Us > Our Business > Wholesale Services
Wholesale Services

Energy companies – whether they are utilities, marketers, energy poolers or industrials — need to take advantage of every competitive edge, including energy procurement and asset management. The Southern Company Gas' family of companies offers the expertise and market knowledge to help wholesale clients manage their natural gas assets more effectively.

Sequent Energy Management

Sequent Energy Management
Year Established: 2001
Headquarters: Houston, Texas
President: Marshall Lang
Web Address:

Sequent Energy Management is the company's Houston-based subsidiary primarily involved in asset optimization and energy marketing and trading. Sequent provides customers throughout North America with smart and proven ways to optimize energy programs and increase cost effectiveness from wellhead to burner-tip. Sequent offers the ideal solution for large energy users looking to outsource their asset management activities. Sequent serves the needs of utilities, marketers, retail aggregators, municipalities and large industrial customers, focusing primarily on asset management and the wholesale marketing, trading, storage and transportation of natural gas. Sequent is ranked among the top 10 wholesale gas marketers in North America by Platts Gas Daily magazine.

More information on Sequent can be found at

Nicor Enerchange

Nicor Enerchange
Nicor Enerchange is Sequent Energy Management's Illinois- based brand for providing Commercial & Industrial customers value-added natural gas procurement services. Founded in 1998, Nicor Enerchange continues to be a trusted wholesale natural gas supplier to the Midwest market. Expert staff provide outstanding customer support on tariffs and fundamentals of the gas market. Relationships with natural gas producers allows Nicor Enerchange to offer very competitive prices. For more information, visit

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