The deal includes include tender design, construction design, construction and site supervision as well as supervision of start-up of the 1400MW plant, which is being developed by Schluchseewerk in the southern part of the Black Forest to help improve the integration of renewable energies into the energy supply system and contribute to the future security of supply.
The Atdorf plant will make use of an elevation difference of some 600m between the Hornberg mountain and the Haselbachtal valley. The artificial Hornbergbecken II reservoir (storage capacity: 9Mm³) forms the upper reservoir; with the lower reservoir situated in the Haselbachtal valley (storage capacity: 9Mm³), a tributary valley of the Rhine.
The waterway leads from the Hornbergbecken II reservoir to the 220m long underground machinery hall via a vertical pressure shaft; from there, it runs in a southwesterly direction to the Haselbachtal valley. The new cavern will be situated close to the cavern of the existing Wehr pumped storage plant.
The investment volume of this new construction project amounts to approximately EUR 1.2B.
