Germany | Bundesnetzagentur Approves New Rules to Integrate Battery Storage and Bidirectional Charging into the Electricity Market

Germany's Federal Network Agency (Bundesnetzagentur) has adopted a new regulatory framework, known as MiSpeL (Market Integration of Electricity Storage and Charging Points), to improve the integration of battery storage systems and bidirectional charging infrastructure into the electricity market.

The new rules address previous restrictions on combining renewable electricity and grid-supplied electricity within the same storage system. Under the revised framework, storage operators can make greater use of both energy sources while retaining eligibility for applicable renewable energy support.

The framework also enables storage systems and bidirectional charging points to participate more actively in electricity market operations. This includes charging electricity when market prices are low and feeding stored electricity back into the grid when prices are higher.

MiSpeL introduces two approaches for determining eligible electricity volumes: a detailed metering option and a simplified flat-rate option. The simplified approach is particularly relevant to households with solar installations of up to 30 kWp, generally requiring only one meter.

Grid and metering operators have a transition period until the end of September 2027 to implement the new rules. The simplified option remains subject to European Commission state-aid approval.

The decision is expected to improve the commercial flexibility of residential, commercial and industrial storage systems, while creating new opportunities for solar-plus-storage applications and bidirectional EV charging.