The Schluchseewerk AG is the operator of five pumped storage hydroelectric power stations in the Southern Black Forest in the German state of Baden-Württemberg.

Both projects involved the engineer and, later, federal service cross (Bundesverdienstkreuzträger) holder, Erich Pfisterer.

For nature conservation and environmental reasons as well as widespread opposition by the local population, the project was axed in 1960 by the state government.

In 1967 the Säckingen underground power station, which was fed by the Eggberg Basin, was added to the network.

Due to renovation work the level of the Schluchsee was lowered in 1983, which brought numerous onlookers to the reservoir.