Large-scale battery storage system being built in Aachen is based on a modular design

Eon and SMA build M5BAT

The E.ON Energy Research Center at RWTH Aachen University, energy utility E.ON SE, battery manufacturer Exide Technologies GmbH’s GNB® Industrial Power division, battery manufacturer beta-motion GmbH, and inverter manufacturer SMA Solar Technology AG will build this year in Aachen a worldwide unique large-scale modular battery storage system with a power range of five megawatts. The project named “Modular Multi-Megawatt Multi-Technology Medium-Voltage Battery Storage” or M5BAT will receive €6.5 million in funding from Germany’s Federal Ministry for Economic Affairs and Energy.

What makes M5BAT distinctive is its modularity, which enables it to optimally combine a variety of battery technologies. It uses

  • high-output lithium ion batteries for short-duration discharge,
  • high-temperature batteries for medium-duration discharge, and
  • lead-acid batteries for short- and medium-duration discharge.

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