Power plants with complex technology have various gradations in design process so that this level in the current time by maintaining the goals of sustainability and sustainable development have a critical importance. These buildings require to be sustainable according to their complexity to provide the finance and discrete budgets for functional needs, meanwhile to design solutions to avoid creating pollution and the reduction of energy should be careful and they are in their life cycle which have a social function. These solutions are possible to offer providing a method in design. Focusing on interventional and unique procedures in design can be very efficient. The present research is applicable with the aim to emphasize and recognize the importance of prioritizing in selecting different areas in combined cycle power plants based on the parameters of sustainable development and responds to the question on what priority should be set in the areas of combined cycle power plants,while observing the principles of sustainable development in the direction of control and decrease of economic, social and environmental risks, describes the infrastructures of sustainable development in the areas of combined cycle. Therefore while addressing senior managers, advisors and contractors ,has presented a list with the consultation of the experts and in the second stage through scrolling using questionnaire and survey from experts and AHP software analysis among consulting companies managers, contractors and professionals the criteria were prioritized in hierarchical method. The economic-functional criteria with rank 0.541 have been in the first priority of attention form the experts’ choice and considering the effect of these criteria on the choices, the choice of steam in combined cycle power plants was placed in the first priority with final weight 0.313 and the gas area was determined in the second priority with final weight 0.266. This was also true in the sensitivity test. Thus paying attention to the functional criteria in order to gain economic productivity in the steam area was defined in the priority of attention.