The energy transition is already underway in a handful of places, and this DW film goes looking for what made it work. In a Bavarian community that switched entirely to renewable power, and in a town in the United States that did the same, local officials describe how the change filled municipal coffers instead of draining them, turning wind turbines and solar arrays into revenue rather than cost. The film moves between these case studies and a wider survey of the technology already sitting in labs and power plants, from grid storage to new generation methods, asking why deployment lags so far behind what engineers say is possible. Interviews with local politicians, plant operators, and residents lay out the practical obstacles: permitting fights, financing, and the coalitions needed to get a project built. The result is less a call to action than a working inventory of what a full switch to renewables actually looks like on the ground, in places where it has already happened.