The combined production of power, carbon dioxide, process steam, hot w
ater, and compressed nitrogen for EOR is considered. Exergy-flow diagr
ams are used to evaluate plant efficiency. The exergy efficiency of th
e plant is defined as the sum of the exergy outputs divided by the exe
rgy of the consumed fuel. Estimations of the invested exergy, net exer
gy coefficient and the sum of the specific exergy consumption are pres
ented.