Geothermal energy is a renewable energy resource, but its sustainability heavily depends on development methods and smart resource management. Optimum utilization of geothermal resources in line with cascaded uses are the key parameters that can lead to the sustainable development of the resources. Plant optimization is one of the standard tools for its performance evaluation. As a result of optimization, energy and exergy efficiencies are very useful to give an idea about resource management to investors and decision-makers for an individual plant performance analysis. Comparing different plants could be challenging due to many contributing parameters such as local ambient conditions and individual plant specifications. This paper will perform energy and exergy analysis for the Takigami geothermal power plant in Japan. Then the results will be compared with published results from selected plants worldwide to present a sensible unified parameter that is independent of the plant's local conditions.