Siemens Smart Infrastructure and Stadtwerke Stuttgart GmbH have formed a partnership to drive sustainable urban energy solutions in Stuttgart. The collaboration has led to the implementation of advanced building and energy management systems at the Stadtwerke Stuttgart headquarters. By utilizing Siemens Xcelerator, an open digital business platform, the intelligent energy management system optimizes the use of renewable energy for various purposes within the facility. This includes charging electric vehicles with renewable energy and electrifying the mobility hub. The integration of Digital Twin technology, IoT sensors, and AI insights ensures efficient operations, achieving significant energy savings and increased net operating income. The initiative extends to other projects like a hydrogen production facility, showcasing the potential for maximizing sector coupling and sustainable operations. Matthias Rebellius from Siemens AG highlights the importance of combining real and digital worlds for sustainable transformation, setting a new standard for cities globally. The partnership between Siemens and Stadtwerke Stuttgart serves as a model for other businesses and cities aiming to enhance sustainability and energy efficiency.