The increased request for sustainable agricultural practices in response to climate change requires inventions in greenhouse design and operation. This review inspects scientific investigations that explore how solar greenhouses utilise phase change materials (PCMs) to improve thermal regulation, decrease expenses, and support crop growth. Also, it examines the matter of temperature instability in traditional greenhouses, as fluctuated temperatures would negatively impact plant health and crop production. Experimental research on PCMs has led to the development of a new thermal energy storage system, which has been analysed for its competence. The outcomes of this review specify that greenhouse temperatures can increase meaningfully during crucial nighttime hours when PCMs are utilised, with a temperature difference ranges between 1 degrees C to 2 degrees C greater than those in standard greenhouses. Also, the integration of PCMs can reduce the daily temperature fluctuation by 3 degrees C to 5 degrees C, enhancing temperature control. Accordingly, it can be said that the incorporation of PCMs within solar greenhouses can enhance the environmental conditions of crops besides boosting the thermal efficacy, contributing to agricultural sustainability. Finally, this review presents an operational strategy to transform greenhouse functionality by enhancing the energy competence and climate resilience. In turn, these systems could revolutionize greenhouse operations and address global food security challenges.