Micro-algal bio-fuel is the most potential alternative of fossil fuel. There is not any commercially feasible algal-fuel technology available till now. Therefore, to make algal bio-fuel commercial, cumulating cheap raw materials and compelling down streaming of product with consummate utilization of biomass ought have to be applied. Coupling utilization of waste-water and flue gasses to algal development decreases production cost as well as give waste-water treatment and reduces air pollution. Therefore, this review focuses on potential outcome of consolidating waste-water, flue gasses with micro-algae production and to develop algal bio-fuel generation technology in the future course of study. This technology will address three major problems of the world viz. Energy depletion, global warming and water pollution. Hence, with the help of in-situ single process, three main aims of algal-fuel generation, remediation of industrial waste-water and flue gases may be achieved. (C) 2016 Elsevier Ltd. All rights reserved.