Geospatial techniques are mediating in decision making, diversified data management and critical analysis. Jatropha curcas. is a biodiesel crop and friendly to the regions of saline water environment. this study focuses to map the suitable plantation sites for biodiesel energy crop by using meteorological parameters and satellite imageries of ASTER GDEM and Landsat 8. The thematic layers of soil adjacent to existing vegetation, topographical elevation, slope, land surface temperature, and humidity are created and analyzed with soil types, bareness index and stream orders. Suitability of sites for plantation is a function of these variables which are found to be favorable in the study area. it should be taken into consideration that Jatropha curcas plantation in Karachi which may contribute in local economic prosperity and support in maintaining heat-sink for the industrialized city.In recent past, the scientific research intensified on alternate energy resources and sustainable environment. Wide-scale use of fossil fuels in power generation, transportation, industrial units and other sectors are adding excessive pressure on economy and raising geo-environmental problems such as depleting fossil energy resources, engendering imbalance in subsurface masses, greenhouse effect aggravating global warming and ultimately contributing to climate change 1 . As the world struggled to address these issues, biofuels energy flash in the sustainable plans for imminent generations. Global warming can possibly be reduced by adopting bioenergy resources as renewable energy alternatives 2 . According to International Energy Agency (IEA), in the year 2009, the global liquid biofuel production reached up to 83 billion liters which pertains to 1.5 percent of the total fuel used in the transportation sector 3 . Jatropha Curcas is an unconventional, biodiesel seed plant (second generation biofuel plant) which has been getting attention due the richness of non-edible oil content (about 35 to 48 percent) 4,5 . Jatropha Curcas is a renewable energy plant and friendly to the region of saline water environment 6,7 like the coastal city Karachi. Due to the steady increase in population, infrastructure, industrial developments and life-style standards, it is apparent that the demand for energy will further increase in the future. The increasing level of greenhouse gases (GHGs) in the atmosphere of mega-cities might be culminated by utilization of ecofriendly fuel. The major cities of Pakistan emit 0.43% of the world's total GHG emissions 4 , in which significant contribution comes from the populous city Karachi 8 . The alternate energy products like Jatropha Curcas production considerably reduced the greenhouse gas emission (68-89%) and saved energy (65-90%