Germany is rebuilding its entire electricity grid from scratch — because a grid designed for coal plants cannot carry a renewable future.
Germany's Energiewende — its energy transition — is the most ambitious grid transformation project in European history. The country shut down its last nuclear plant in 2023. It is phasing out coal by 2038. Wind and solar now supply over 50% of German electricity. And the grid that was built to move power from large centralized plants in the west to industrial consumers in the south is fundamentally mismatched with where clean energy is actually generated.
Germany's wind power is concentrated in the north — Schleswig-Holstein, Lower Saxony, the North Sea and Baltic coasts. Germany's industrial demand is concentrated in the south — Bavaria, Baden-Württemberg, the automotive and manufacturing heartland. Between them sits a transmission gap that causes renewable energy to be curtailed in the north while gas plants still run in the south. The solution is a series of major north-south high-voltage direct current transmission corridors known as the Stromautobahnen — electricity motorways.
Projects like SuedLink and SuedOstLink are underground HVDC cables running over 700 kilometers, designed to carry gigawatts of northern wind power directly to southern demand centers. They are among the most complex infrastructure projects in German engineering history — and they are underway right now, with completion targeted before 2030.
Germany does not just need more renewable energy. It needs the wires to move it.
Source: Bundesnetzagentur (Federal Network Agency), 2023
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