<p>The global energy crisis, driven by the depletion of fossil fuels and also their resulting carbon emissions, is a critical issue. Renewable energy sources like solar and wind offer solutions, but their intermittent nature necessitates energy storage systems to retain excess energy for later use. Thermal energy storage (TES) units, especially when paired with solar parabolic concentrators, are vital for storing daytime energy for nighttime use. Among the two categories of TES, i.e., sensible heat storage (SHES) and latent heat energy storage (LHES), the thermal performance of LHES mainly depends upon the thermophysical properties of phase change materials (PCM) and heat transfer enhancements. This study observed that utilizing extended surfaces at various locations within LHES unit improved heat transfer and overall thermal performance. The melting times for Case I, Case II, and Case III were 56 min, 52 min, and 49 min, respectively. The TES unit’s performance significantly enhanced due to utilization of extended surfaces inside and outside of central pipe showing nearly three times the efficiency compared to the base model from the reference study. This enhancement was linked to the rapid generation of vortices, which increased heat dissipation and accelerated the phase transition from solid to liquid. In Case III, over 90% of the PCM melted within 45 min, achieving complete melting in 49 min. Case II saw 87% of the PCM melt within 45 min, with full melting occurring in 52 min. Thermal fluctuations from the inlet to the outlet of the inner pipe were greater in Case I compared to Cases II and III, due to the quick transition from conduction to convection, which enhanced the heat transfer rate.</p>