Better sustainable energy storage solutions demand strong materials development since the smart grid infrastructure needs them. The properties needed for stationary energy storage elements consist of robust mechanical elements and thermal management functionality, since these features control operational stability and grid functionality. The study investigates optimal thermal and mechanical functionalities that result from combining graphite-modified paraffin-based phase change materials within CNT-reinforced ceramic matrix composites. Energy control systems and environmental management applications were evaluated for feasibility through tests that combined equal heat treatments with mechanical tests. A research model analyzed heat storage by having mathematical heat conduction methods merge with stress-strain evaluations to monitor material deterioration effects and structural stability. Repeated loading caused material degradation of the paraffin-graphite material system (model A), leading to failure and stress-related damage because it accumulated minimal thermal stress. The CNT-ceramic material in model B performed heat conductance well within high-energy storage while sustaining its structural integrity through repeated operation cycles at a minimum elastic strain rate. Analysis of the CNT-reinforced structure system performs both thermal functionality assessment and material strength reinforcement evaluation by using graphical and numerical measurement methods during the evaluation process. The research data shows that grid architecture requires energy storage units with exceptional operational efficiency, together with optimal mechanical and thermal characteristics. Design procedures obtain optimized materials and intelligent selection strategies from these investigational studies. Extensive energy management needs additional method development, which requires simulation outcomes to serve as fundamental components.