atlanta gas light is the natural gas utility for the region, and has been so for over a century and a half, since it installed gas lamps in atlanta in 1856. it operated as a regulated monopoly until november 1998, the after the state legislature voted in early 1997 to deregulate natural gas marketing, and make customers choose among nearly 20 different marketers still selling the same agl-wholesaled gas, such as gas south, infinite energy, scana and georgia natural gas. most of the gas comes via pipeline from louisiana.