A method for controlling at least one master train of a stoichiometric exhaust gas recirculation power plant arrangement comprising a master train and a slave train, both trains comprising a gas turbine assembly, and the master train further comprising at least one main air compressor , wherein an inter-train conduit is provided for fluidly connecting an outlet of the main air compressor and the slave train, the method comprising the steps of: compressing ambient air into a compressed ambient gas flow with at least one main air compressor ; opening a master air injection valve to fluidly connect the inter-train conduit to a master turbine combustor; delivering at least a first portion of the compressed ambient gas flow , with a master compressed ambient gas flow rate, to a master turbine combustor ; delivering a master fuel stream , having a master fuel stream flow rate, to the master turbine combustor for mixing with the at least a first portion of the compressed ambient gas flow and with at least a first portion of a master recirculated low oxygen content gas flow to form a master combustible mixture; burning the master combustible mixture in the master turbine combustor and thereby forming the master recirculated low oxygen content gas flow and driving a master turbine connected to a master turbine compressor via a master turbine shaft ; recirculating the at least a first portion of the master recirculated low oxygen content gas flow from the master turbine to an inlet of the master turbine compressor using a master recirculation loop ; adjusting the master compressed ambient gas flow rate and adjusting the master fuel stream flow rate to achieve substantially stoichiometric combustion; venting an excess portion, if any, of the at least a first portion of the compressed ambient gas flow ; and extracting at least a second portion of the master recirculated low oxygen content gas flow from an outlet of the master turbine compressor using a master extraction conduit . compressing ambient air into a compressed ambient gas flow with at least one main air compressor ; opening a master air injection valve to fluidly connect the inter-train conduit to a master turbine combustor; delivering at least a first portion of the compressed ambient gas flow , with a master compressed ambient gas flow rate, to a master turbine combustor ; delivering a master fuel stream , having a master fuel stream flow rate, to the master turbine combustor for mixing with the at least a first portion of the compressed ambient gas flow and with at least a first portion of a master recirculated low oxygen content gas flow to form a master combustible mixture; burning the master combustible mixture in the master turbine combustor and thereby forming the master recirculated low oxygen content gas flow and driving a master turbine connected to a master turbine compressor via a master turbine shaft ; recirculating the at least a first portion of the master recirculated low oxygen content gas flow from the master turbine to an inlet of the master turbine compressor using a master recirculation loop ; adjusting the master compressed ambient gas flow rate and adjusting the master fuel stream flow rate to achieve substantially stoichiometric combustion; venting an excess portion, if any, of the at least a first portion of the compressed ambient gas flow ; and extracting at least a second portion of the master recirculated low oxygen content gas flow from an outlet of the master turbine compressor using a master extraction conduit . <EOS>