The German Federal Network Agency (BNetzA) plans to introduce
grid fees for stand-alone battery energy storage systems (BESS) in
the course of a larger structural reform of electricity grid fees
in Germany.
The key features of the envisaged future grid fees for BESS are
expected to include: (i) capacity-related fees, (ii)
consumption-related fees for non-bidirectionally used electricity
(stored but not fed back into the grid), as well as (iii) dynamic
fees linked to how grid-friendly the location and operation of the
BESS is.
The dynamic fee is designed to possibly reach negative levels in
case BESS operation provides grid relief, thus offering financial
upside through proactive corresponding BESS optimization.