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In this paper life cycle assessment of stand-alone solar PV power systems is studied to test their feasibility in regions of Bangladesh which do not have access to grid electricity. Economic performance of renewable power sources and non-renewable fossil fuel supplied generators is investigated and compared in terms of net present value analysis. The analysis suggest that solar PV systems are better both economically and environmentally from the context of a developing country like Bangladesh. Moreover, the results establish the finding that the choice between renewable or traditional power sources from an economic point of view depends on the load demand of the customers and the power rating of the generators.