This paper discusses the Life Cycle Cost Analysis (LCCA) of a fishing trawler using solar energy to be installed in the Bay of Bengal in Bangladesh. This system is entirely green, free and economically feasible solution for a fishing trawler for cultivating fish in Chittagong region of Bangladesh. The Life Cycle Cost Analysis of this proposed design is mathematically modeled via software. The LCCA result specifies saving to Investment ratio (SIR) and Net Profit Value (NPV) of this renewable system is greater than 1.00 and also indicates Bangladeshi Taka (BDT) 11, 99, 607 will be the net benefit for each trawler after 20 years payback time which saves approximately USD60/month/trawler. This huge revenue may bring socio-economic change in the life of Bangladeshi fishermen.