Abstract: A method and apparatus for power generation based on char includes partial combustion of char with preheated air in a flow of recirculated bed material; final combustion of the partially burned material in a flow of bed material; separation of the products of the final combustion in a separator which delivers bed material to an intermediary vessel and gas to the gas turbine combustion chamber; recirculation of bed material to the combustion steps via the intermediary vessel, where it is cooled and divided into two flows; preheating of air from the gas turbine compressor, which has been divided into two flows by mixing the air with bed material from the intermediary vessel; generation of electric power in a combine cycle with a gas turbine with reheated gas from the separator, and a steam turbine; and recovery of heat from the turbine exhaust gases for use in the steam cycle.