reported to align with the global guidelines above (relevance to the eight national priorities, Greek Green Deal, "Energy Efficiency First", European Green Deal Risk Radar).

Simultaneously, assessing the desirable and undesirable results of upcoming systemic changes, differences between conservative (fossil fuels) and contemporary (heat pumps) energy sources are stressed.

In conclusion, a diverse range of solutions about renewable sources and smart systems through circular and blue economy is proposed. Indicatively, such means refer to thermal insulation, flexible heat pumps and electrification, prefabricated standardized panels for facades and roofs, PV and thermal solar systems, batteries, waste management (recycled vehicle tires, such as Ecoelastika), sustainable urban mobility plans, private cars with green hydrogen, electric vehicles' charging and parking infrastructure, local initiatives against climate change, and smart measurers, self-consumption system or virtual synchronized energy netting (digitalized innovations).

Results : •It is important to encourage a sense of unity and cooperation in relation to public administration factors and individuals.
•We must raise awareness for constructive contributions of recovery and resilience for a more sustainable and harmonious planet.

Conclusions : By exploring the deep obstacles that hinder free and just access to clean energy for everyone through detailed regulatory investigation and simultaneous examination of set goals and expected results, this research seeks viable solutions to combat climate and energy challenges efficiently.