@sustainability_circle on Instagram: "Community Power in Action Vauban District in Freiburg, Germany shows how cities can run on clean energy and collective action. Solar homes produce more energy than they use. Smart grids let residents share or sell excess power. Energy-efficient buildings cut heating and cooling needs, while trams, cycling, and walkable streets reduce fossil fuel use. Green roofs cool the neighborhood, local food systems lower hidden energy costs, and citizen-led energy co-op