Biodiesel utilization, in recent times, has become a novel issue especially because of its benefits towards mitigating global warming effect, as well as being an alternative source of energy. In the fore front of choice energy crops adopted for use are Jatropha curcas and Moringa oleifera seeds which produce about 27-40% oil and 38–40% (edible oils) respectively. Both crops exhibit numerous attributes which make them suitable as alternative energy sources. However Jatropha possesses some risk factors associated with its inherent toxic part as well as environmental hazards associated with its large scale and long term production as an alternative energy source crop. Moringa however, has one hundred percent usability, as all parts of the plant are useful without any toxic part. This review highlights some of the merits and demerits of the two crops; vis-a- viz the search for a viable and sustainable means of an alternative energy source.