Globally, many industries are using lean manufacturing concept in their production system to identify and eliminate the waste and to support customers value. Especially, automotive, manufacturing, healthcare, service sectors and many others have embraced lean principles. This study aims to interpret application of Lean techniques in various industries especially in energy sectors. In order to evaluate the application of lean, this paper aims to explain importance of lean manufacturing in the context of energy sectors transformation into lean process and giving example of implementation of lean manufacturing in one of the energy sectors. A case study example from an energy sector company is also presented as a part of the study. This research was conducted by reviewing published peer review literatures and articles through using resource from university library. Based on the findings of this research, industries leaning towards Lean manufacturing are producing goods efficiently and cost-effectively, achieving financial goals and customer satisfaction.