The features of an air membrane-ATR integrated gas turbine power cycle, which is used for producing electricity with low CO2 emission, were described. In this method, the natural gas fuel gets converted to H2 and CO through auto thermal reforming (ATR) process within the air separation membrane reactor. In the sequence of the process, the H2 content of the reformed fuel is enriched by CO-CO2 shift reaction. The coupling of the membrane and the ATR reactor works as the main advantageous and differential points between this system and other decarbonization processes.