Sustainability of a power production system

Sustainability of any production system is a key issue to address in modern context of environment friendly developments. It primarily depends on the continued human relationship with a given energy resource where the rate at which humans exploit it is compared to the rate at which nature renews again. If the resource is regenerated at a higher rate than it is used, it is considered renewable, but if it is exploited at a higher rate than it is regenerated, it is considered nonrenewable. Within various process of judging sustainability, the emergy approach is a unique method which encompasses all components of concerned resources in their renewable or nonrenewable form. It is a matter of concern to examine the sustainability of energy technologies that can be increased further for the ever increasing need of society. This paper deals with methods to judge sustainability of production systems using emergy approach applied to a case study.