Mathematical Model of the Solar Combined Cycle Power Plant using Phase Change Materials in Thermal Energy Storage System (Thermodynamic Analysis)

•Novel framework optimizes solar combined cycle plants, focusing on exergy in heat exchangers for storage.•Emphasizes PCM significance for boosting solar plant efficiency, increasing storage density, and maintaining temperature.•Three configurations explored, revealing PCM benefits in latent energy storage, enhancing exergy efficiency.•The integrated PCM configuration shows advantages with increased exergy efficiency and marginal temperature boost.