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Leag Contracts HyperStrong and Siemens Energy for 400 MW Boxberg GigaBattery

EU approval of up to €1.75 billion in compensation frames Leag’s pivot from lignite to grid-scale storage.

Overview

  • Leag’s unit Leag Clean Power signed a supply-and-construction deal for the Boxberg battery project with HyperStrong’s German subsidiary and named Siemens Energy to deliver the 380 kV gas‑insulated switchgear.
  • The lithium‑iron‑phosphate system is specified at 400 MW and 1,600 MWh on a roughly six‑hectare site where Boxberg’s former cooling towers were demolished.
  • Leag says the installation will buffer renewable feed‑in fluctuations and support grid stability, with capacity it claims could cover about 640,000 households for four hours.
  • Boxberg is Leag’s second large storage site after Jänschwalde and is designated as an anchor for the company’s planned GigawattFactory expansion.
  • The European Commission cleared state aid of up to €1.75 billion to compensate Leag for the mandated brown‑coal exit, including recultivation and social costs.