As the United Nations stresses towards clean energy, via its sustainable development goals (goal number 7), animate prime movers are yet another renewable energy resource, which may contribute towards the betterment of humanity. Though considered out-of-place in the modern and futuristic human society, their appropriate utilization, while ensuring welfare elements, can still provide benefits to mankind. In fact, various modern pieces of research mention animal based work in different areas. The current article discusses two concept schemes for renewable/sustainable power generation via animals – issues with prior art have been discussed to bring out the effectiveness of the presented schemes. Furthermore, a simulation based study has been presented in this article, which is another contribution, because studies of animal based power generation, generally do not include simulation work. Lastly, a methodology for training an expert system to detect the fatigue of a power generating animal, has also been briefly discussed in this manuscript.