In this work, a model of an Organic Rankine Cycle (ORC) able to produce electricity thanks Waste Heat Recovery (WHR) from an industrial process has been developed. To compute all the steps a coupled use of MatLab and Engineer Equations Solver (EES) is used. Very common target in the whole society is energy saving. It is performed with several forms; the present work aims to investigate in the world of the industrial processes and how can be possible the best utilization of a surplus of energy existing during them. The concept of “Waste Heat Recovery” (WHR) is important, waste heat is present in large quantities in several sectors, such as the manufacturing industry, commercial and residential buildings, power plants and transportation systems.