SEMI was established in 1988 to market natural gas in deregulated energy markets. We're headquartered in Columbia, South Carolina, and have offices in Atlanta, Georgia and Gastonia, North Carolina. Local representation is also found throughout South Carolina, Georgia, North Carolina and Virginia.

Find out more about what we do and why you should do business with us.

What We Do

We currently serve over 500 industrial and commercial customers, municipalities, power producers and aggregators in the southeast with a menu of services that includes the procurement of natural gas, capacity management, asset management, scheduling and balancing, and alternate fuel analysis and sourcing in order to provide the most economical, reliable energy solutions.

Why should you do business with SEMI? How about because of our:


At SEMI, we know the natural gas industry. With this in-depth knowledge and our equally broad-based understanding of business needs, we can help you develop a customized strategy that meets your organization’s specific needs.

Diverse Services

A variety of natural gas distribution services and contracts are available, and our account managers will work with you to determine which best fit your energy usage and financial parameters.

Customer Focus

At SEMI, we're focused on building long-term business partnerships by providing superior customer service, reliability and the economical solutions our customers want.

As a subsidiary of SCANA Corporation, an energy-based holding company, our emphasis on customer service stems from a long-standing tradition. SCANA Corporation and its companies have provided reliable service throughout the Southeast for 160 years.