The German energy grid is not an island but it is part of the largest synchronous grid of the world: https://en.m.wikipedia.org/wiki/Synchronous_grid_of_Contine

The German energy grid is not an island but it is part of the largest synchronous grid of the world: https://en.m.wikipedia.org/wiki/Synchronous_grid_of_Continental_Europe https://en.m.wikipedia.org/wiki/Synchronous_grid_of_Continen... Which is furthermore tightly coupled with other grids such as the UK/Ireland and Nordic countries.