NOVELTY - Capturing carbon dioxide, involves capturing output stream, processing captured output stream with fuel cell array of molten carbonate fuel cells, reacting carbonate with hydrogen to produce electricity, passing anode exhaust stream through water gas shift reaction stage to form shifted anode exhaust stream, separating carbon dioxide from the shifted anode exhaust stream, and recycling at least portion of the shifted carbon dioxide-depleted anode exhaust stream to the one or more fuel cell anodes.    USE - The method is useful for capturing carbon dioxide from combustion source (claimed) or from gas mixture.    ADVANTAGE - The method consumes less power.    DETAILED DESCRIPTION - Method for capturing carbon dioxide from combustion source, involves capturing an output stream from combustion source, where the captured output stream comprises oxygen and carbon dioxide, processing the captured output stream with fuel cell array of one or more molten carbonate fuel cells to form cathode exhaust stream from at least one cathode outlet of the fuel cell array, reacting carbonate from the one or more fuel cell cathodes with hydrogen within the one or more fuel cell anodes to produce electricity and an anode exhaust stream from at least one anode outlet of the fuel cell array, where the anode exhaust stream comprising carbon dioxide and hydrogen, passing the anode exhaust stream through water gas shift reaction stage to form shifted anode exhaust stream, separating carbon dioxide from the shifted anode exhaust stream in one or more separation stages to form shifted carbon dioxide-depleted anode exhaust stream, and recycling at least portion of the shifted carbon dioxide-depleted anode exhaust stream to the one or more fuel cell anodes, where at least portion of the hydrogen reacted with carbonate from the recycled shifted carbon dioxide-depleted anode exhaust stream. The one or more molten carbonate fuel cells comprise one or more fuel cell anodes and one or more fuel cell cathodes. The one or more molten carbonate fuel cells which are operatively connected to the captured output stream from the combustion source through at least one cathode inlet. Fuel utilization of the one or more fuel cell anodes is 60% or less.