Responsible data centre owners, operators, and users are increasingly focusing on the environmental impact of their operations. Sustainability and energy efficiency are key considerations, with a shift towards utilizing renewable energy sources like solar, wind, biogas, and hydrogen. Collaboration with local communities is essential, with a concept known as 'sector coupling' emerging to promote energy recovery and lower emissions. Heat recovery from data centres is highlighted as a significant opportunity for emission-free heat sources, particularly in regions like Northern Europe where demand for heat re-use is growing. Strategies like exporting excess heat to end users and supporting district heating systems showcase the potential for data centres to contribute positively to local energy infrastructure. Furthermore, grid stabilization is crucial in the context of increasing renewable power generation. Data centres can play a role in balancing the grid by deploying energy storage systems and onsite generation, reducing reliance on fossil fuel power plants during periods of energy mismatches. An example in Eschborn, Germany, illustrates how recovered heat from an edge data centre is utilized to warm public buildings, demonstrating the practical application of sustainability initiatives in the community.