The Metropolitan Region of Hamburg, encompassing the Free and Hanseatic City of Hamburg along with surrounding areas of Schleswig-Holstein, Mecklenburg-Vorpommern and Lower Saxony, has seized its momentum as an economic centre and invested in transforming its energy industry towards greener paths. For decades, Hamburg’s energy sector has been a prime model for Europe’s transition to renewable energy. In the past two decades, Hamburg has firmly established itself as the heart of Europe’s wind energy industry. The city hosts the headquarters of leading wind turbine manufacturers like Nordex Acciona and Siemens Gamesa Renewable Energy. Key business units focused on product and project development, sales, research, and management are centered in Hamburg, while the wider metropolitan area is dotted with manufacturing sites. Major utilities and offshore wind farm developers such as EnBW, Orsted, RWE Renewables, and Vattenfall Europe Wind Power have also made Hamburg their home. The region’s comprehensive value chain for the wind energy industry includes services in technical certification, financing, insurance, engineering, logistics, and sales. This holistic ecosystem supports the rapid growth and innovation within the sector, which serves as the main driving power behind Germany’s broader Energiewende. Wind energy, although being the primary focus for Hamburg, the region heavily invests in sector coupling, which integrates renewable energy sources into other energy-consuming sectors such as heating, cooling, transportation and industry. This integration is crucial for a successful holistic decarbonization strategy. Innovative projects in the region are utilizing industrial waste heat to supply residential areas and developing smart solutions to enhance demand-side flexibility. These initiatives not only showcase practical applications of sector coupling but also highlight a clear and sustainable path toward a carbon-neutral future. The metropolitan area’s expertise in these projects demonstrates the feasibility and benefits of integrating renewable energy across various sectors, which sets a positive precedent for other regions to follow.