The concept of green sigma is the latest trendsetter which encompasses the important strategies of six and lean sigma together under one roof. This paper explains the concept of green sigma initially, then feasibility of applying this model in a power station was thoroughly analyzed and applied to replace the existing fluorescent lighting system of the power plant with LED lightings and valid proofs in terms energy savings were generated to substantiate LED. The methodology employed were the

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... e steps of green sigma modified suitably to study, analyze and generate results on the lighting system. A complete LED lighting design was developed for 12 rooms in the administration block of the power station (indoors) and the benefits derived by implementing LEDs daylight was simulated and optimized using DIALUX lighting software in terms of energy savings, wattage savings, reduced carbon dioxide footprint, and other potential environmental benefits such as mercury savings were calculated and statistical results were generated for each room of the administration block. The analysis resulted in potential energy savings and carbon reduction to the tune of 50%due to revised lighting system.