Atlanta Gas Light Co. customers will begin seeing escalating surcharges on their bills in 2015 as the utility embarks on $261 million in statewide improvements over the next four years, including new natural gas pipelines in South Hall County. Earlier this month, the Georgia Public Service Commission approved agreements for the improvements to AGL’s pipeline distribution system. The cost to ratepayers will be a 48-cent surcharge added to monthly bills starting in January 2015, then an additional 48 cents beginning in January 2016 and 47 cents starting in January 2017.