With the steadily growing share of renewable energy in the German power grid, the challenge of storage is moving into focus. Battery storage systems show that the future of energy supply is not only turning green — it is also becoming big.

The storage industry is very concerned about AGnES — the major reform of the network charging system by the Federal Network Agency (BNetzA). The discussion also focuses on the question of what network benefits large battery storage systems have in a commercial mode of operation.

The market for large-scale battery storage is currently booming, although the regulatory framework is hindering rather than promoting storage expansion. There is an urgent need to create clarity here so that storage systems can develop their potential and contribute to grid stability.