Power Grid: High‑Voltage DC Transmission Passage C is a mini‑expansion that arrives in the Power Grid universe with a very specific focus: the high‑voltage transmission line that connects northern Germany to the south. It only works with the German map of the base game, so if you already have the German version, you can add this new route without needing extra components. The idea is that, over the course of the game, players will build this transmission line between Cuxhaven and Stuttgart, eliminating connection costs between those points. In return, the money you invest in construction is charged as taxes, so in a way you’re helping the government distribute wind‑generated energy to the southern regions that need it most. The mechanic remains faithful to Power Grid: bidding for power plants, buying coal, and building networks, but with the advantage that the transmission line adds a new layer of cost optimization and route planning. If you enjoy Power Grid and want to try a variation that adds an extra challenge of resource management and strategic planning, this expansion is perfect. It’s short, focused, and brings a burst of fun for those who already master the base game.