Germany Drafts Rules Creating Parity Between Bidirectional Charging, Stationary Storage

Germany is taking a major step in the energy transition by working to place bidirectional charging of electric vehicles on the same regulatory level as stationary battery storage. The country’s Federal Network Agency has prepared a draft framework known as “Market Integration of Storage and Charging Points” (MiSpeL).

This move is designed to remove barriers that have limited the role of electric vehicles in supporting the power grid and to open new opportunities for both households and businesses. The draft rules aim to give electric vehicles with bidirectional or vehicle-to-grid technology the same treatment as home batteries.

This means that an EV connected to a home energy system could not only take electricity from the grid but also feed it back, just as a stationary storage unit would. By doing so, car owners could participate in feed-in and payment schemes that are currently reserved for battery storage operators.

Allowing electric vehicles to function as flexible storage could bring important benefits to the wider energy system. Cars and stationary batteries could store power when renewable production is high and electricity prices are low. Later, they could release that energy during periods of low renewable supply and high prices.

According to Klaus Müller, President of the Federal Network Agency, the decision lays the foundation for greater flexibility in both small and large storage systems. It also marks a milestone for bidirectional charging in Germany.

The draft does not only address home charging but also situations where vehicles feed electricity back into the grid after charging at other places such as workplaces. In such cases, the system will distinguish between energy charged at home and energy imported from elsewhere. If the annual feed-in at a point is higher than the electricity charged there, the extra amount will be treated as imported third-party electricity.

This ensures that grid balancing remains accurate while still allowing companies and employees to benefit from the system.

Subsidies and levies are also part of the new framework. Operators will remain eligible for EEG subsidies when they feed renewable power into the grid. They will also continue to receive reduced EnFG levies even if their storage mixes renewable energy with grid electricity.

To make this practical, the draft offers two accounting options. One is a precise calculation method aimed at operators of large solar installations. The other is a simplified option suitable for smaller solar systems.

The Federal Network Agency plans to present the draft rules in detail at a workshop on Oct. 1 2025. Stakeholders, including companies, grid operators, and industry associations will be invited to provide their input during the consultation process. With this step, Germany is signaling its intent to make energy storage more flexible and to give electric vehicles a stronger role in the country’s energy market.

If this system is adopted in Germany and other major markets, many electric vehicle manufacturers like Rivian Automotive Inc. (NASDAQ: RIVN) would be strongly motivated to include bidirectional charging in all their models in order to enable customers to benefit from the V2G technology.

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