Arzberg

Battery storage

100 MW

200 MWh

Germany

The Battery Energy Storage System (BESS) in Arzberg, in Germany's Wunsiedel district, is a landmark project in Europe's energy transition. With 100 MW installed capacity and 200 MWh storage capacity, the facility stabilizes the electricity grid and supports the integration of renewable energy sources. Using advanced lithium-ion technology, it stores excess renewable energy and releases it when needed, providing essential flexibility to the power network. Realized as the first project under the MW Storage Fund, launched in 2022, it was developed with Reichmuth Infrastructure as majority shareholder, alongside Bayernwerk and ZENOB as co-investors.

Commissioning:

Q4 2025

2025

Source of Revenue:

Ancillary Services, Energy Trading

Technology Provider:

Fluence Energy

Optimizer / Aggregator:

Entrix & Enspired

Oblique aerial view of a battery storage plant showing rows of battery cabinets and inverters under open canopy structures, with transformer substation and wind turbines in the background.
  • Central walkway of a battery energy storage system with battery cabinets on both sides under green canopy roofs, three engineers in high-visibility vests conducting an inspection, transformer substation visible in the background.
  • Top-down aerial view of a battery storage facility with two parallel battery block arrays under canopy structures, adjacent transformer substation and access road.
  • Aerial view of a large-scale battery energy storage system (BESS) with transformer substation in a rural landscape, wind turbines and high-voltage pylons visible in the background.
  • Large power transformer with oil cooler on a concrete foundation next to a high-voltage switchgear with insulators and overhead line masts at a substation under construction.
  • Drone shot of a utility-scale battery energy storage facility with multiple rows of installed storage containers, a substation under construction and high-voltage pylons, surrounded by agricultural fields.
  • Opened battery energy storage container revealing stacked lithium-ion battery modules with orange high-voltage connectors and internal wiring at an outdoor utility-scale storage facility.
  • Exterior view of multiple large-scale battery energy storage containers featuring ventilation grilles, emergency shut-off switches and hazard labels.
  • Aerial view of the Arzberg battery storage facility with white containers arranged in rows and a construction crane on site.

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Project Overview