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8h ago

E.ON Puts a Number on EV Battery Storage Potential as Germany’s Used EVs Lose Value

Missing standards, tariffs, and legal clarity keep bidirectional charging from scaling despite recorded owner interest.

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Zwei Arbeiter prüfen den Lack eines VWs, sie tragen weiße Handschuhe
Durch Fortschritte in der Akku-Technik werden ältere E-Autos unattraktiv und verlieren rasant an Wert.

Overview

  • More than 225,000 vehicles in Germany are technically capable of bidirectional charging, according to E.ON.
  • If 60% of that battery capacity were available overnight, E.ON estimates nearly 8,000 MWh could power about 2.5 million households and ease evening reliance on gas-fired plants.
  • An E.ON survey of over 1,000 drivers found roughly one third of homeowners would use car batteries to supply their homes, with 26% supporting feed-in to the grid.
  • Pilot projects exist, yet widespread use is held back by missing legal frameworks, common technical standards, compatible wallboxes, and clear tariffs, with ADAC listing around 30 models as theoretically ready.
  • Germany’s EV fleet exceeds 1.6 million, and used EVs show heavier depreciation—about €6,400 more at three years than petrol cars—though battery reports often indicate around 90% remaining range and an extended tax exemption may help demand.