Piedmont Natural Gas Company, Inc. is an energy services company whose principal business is the distribution of natural gas to over one million residential, commercial, industrial and power generation customers in portions of North Carolina, South Carolina and Tennessee, including customers served by municipalities who are the Company's wholesale customers. The Company is invested in joint venture, energy-related businesses, including unregulated retail natural gas marketing, and regulated interstate natural gas storage and intrastate natural gas transportation. The Company operates in two segments: regulated utility and non-utility activities. The regulated utility segment is the gas distribution business, where it includes the operations of merchandising and its related service work and home warranty programs, with activities conducted by the utility. The non-utility activities segment consists of the Company's equity method investments in joint venture, energy-related businesses.