a method of tracking production from an ng source that includes the steps of providing one or more micro - scale gtl units , feeding ng from the source to the micro - scale gtl units , operating the micro - scale gtl units and adjusting the number of micro - scale gtl units employed to track or match the production from the source is provided . in some aspects of the invention , the micro - scale gtl unit includes both syngas manufacture and liquid product synthesis . the liquid product synthesis step may produce methanol , mixed higher carbon number alcohols , dimethyl ether , fischer - tropsch liquids , and / or any combination of these products .