The project of combined production of power, carbon dioxide, process s
team, hot water and compressed nitrogen for oil recovery enhancement i
s considered. The energy analysis to evaluate effectiveness of the pla
nt is used. As the main tool the energy flow diagrams are developed. E
nergy efficiency of the plant is defined as a relation of the sum of d
elivered energy flows to the energy of consumed fuel. At attempt to gu
ess the invested energy, net-energy coefficient and the sum of specifi
c energy consumption (exergonomic criterion) is presented.