By leveraging technology and implementing a set of targeted actions, the Municipality of Piraeus has successfully reduced electricity consumption in municipal buildings and schools, aiming to achieve both energy savings and the optimal overall operation of these facilities. Initiatives in this sector have significantly contributed to mitigating the financial burden caused by the energy crisis. Moreover, the primary objectives of the Municipality of Piraeus—constituting a fundamental responsibility—focus on energy upgrading, which leads to improved quality of life, a cleaner environment, and innovative solutions that make daily life easier and more “green” for residents.