The purpose of a base charge is to recover Atlanta Gas Light's (AGL) costs associated with delivering gas, maintaining the pipeline, replacing bare and corroded pipes, storing purchased gas, meter reading, customer service, and other costs associated with delivering natural gas to your home. The base charge is unique to each home or business. It is calculated with allowances for how much gas each home consumed during the coldest period of the past year. Having enough pipe and storage capacity to meet every customer's need during the coldest weather is the challenge AGL must meet. The base charge for each home varies with the size of the home and the type of gas appliances used.