Abstract: An indirect-fired biomass-fueled gas turbine system with a combustor for combustion of biomass particles to produce a combustion gas, a heat exchanger providing a heat exchange relationship between combustion gas from the combustor and compressed air, and a gas turbine. The combustor may be a cyclonic combustor with a combustion liner forming a combustion chamber, a biomass feed inlet at one end of the combustion chamber formed through the combustion liner for receiving the biomass particles from a fuel feed system, wherein the biomass feed inlet is formed so that the biomass particles are introduced into the combustion chamber with a tangential component, and a plurality of air tuyeres formed through the combustion liner for receiving air, wherein at least one of the air tuyeres is arranged to introduce the air into the combustion chamber with a tangential component.