Segment and Geographic Information. The following sections describe Nicor’s larger businesses. Certain terms used herein are defined in the glossary on pages ii and iii.

GAS DISTRIBUTION

General

Nicor Gas, a regulated natural gas distribution utility, serves nearly 2.2 million customers in a service territory that encompasses most of the northern third of Illinois, excluding the city of Chicago. The company’s service territory is diverse and its customer base has grown steadily over the years, providing the company with a well-balanced...