Saft has supplied Uptimax nickel batteries to Eon’s 302MW Amrumbank West offshore wind farm in the German North Sea, some 40km North of Helgoland.
A total of 80 batteries – one for each turbine – has been supplied, the company said.
In the event of an interruption to the main power supply, the batteries are designed to deliver peak power for essential communication and lighting services for sea marking for an initial period of eight hours, followed by a further 88 hours of low power.
Each battery is rated at 2V and has energy storage capacity of 150Ah or 390Ah.
The batteries require no topping-up and are built into the project’s modular transition pieces.
A lengthy construction and integration process of up to two years meant that the batteries also needed to operate successfully after a long period in storage while fully charged, Saft added.
Image: turbines installation at Amrumbank West (Eon)
