A mechanical draft modular air cooled condenser for condensing steam from a turbine, comprising: a condenser module including: a plenum ; a first condenser bundle having a first set of tubes having first ends and second ends, the second ends lower than the first ends, and a first condensate header connected to the second ends of the tubes of the first set of tubes; a second condenser bundle having a second set of tubes having third ends and fourth ends, the fourth ends lower than the third ends, and a second condensate header connected to the fourth ends of the tubes of the second set of tubes, the second condensate header parallel to the first condensate header; a third condenser bundle having a third set of tubes having fifth ends and sixth ends, the sixth ends lower than the fifth ends, and a third condensate header connected to the sixth ends of the tubes of the third set of tubes, the third condensate header parallel to the first condensate header and parallel to the second condensate header; a fourth condenser bundle having a fourth set of tubes having seventh ends and eighth ends, the eighth ends lower than the seventh ends, and a fourth condensate header connected to the eighth ends of the tubes of the fourth set of tubes, the fourth condensate header parallel to the third condensate header; a shroud that houses a single fan, a support frame that supports the first, the second, the third, and the fourth condenser bundles; characterized in that the single fan is positioned to create a draft to flow over the first condenser bundle, over the second condenser bundle, over the third condenser bundle, and over the fourth condenser bundle. a plenum ; a first condenser bundle having a first set of tubes having first ends and second ends, the second ends lower than the first ends, and a first condensate header connected to the second ends of the tubes of the first set of tubes; a second condenser bundle having a second set of tubes having third ends and fourth ends, the fourth ends lower than the third ends, and a second condensate header connected to the fourth ends of the tubes of the second set of tubes, the second condensate header parallel to the first condensate header; a third condenser bundle having a third set of tubes having fifth ends and sixth ends, the sixth ends lower than the fifth ends, and a third condensate header connected to the sixth ends of the tubes of the third set of tubes, the third condensate header parallel to the first condensate header and parallel to the second condensate header; a fourth condenser bundle having a fourth set of tubes having seventh ends and eighth ends, the eighth ends lower than the seventh ends, and a fourth condensate header connected to the eighth ends of the tubes of the fourth set of tubes, the fourth condensate header parallel to the third condensate header; a shroud that houses a single fan, a support frame that supports the first, the second, the third, and the fourth condenser bundles; characterized in that the single fan is positioned to create a draft to flow over the first condenser bundle, over the second condenser bundle, over the third condenser bundle, and over the fourth condenser bundle. <EOS>