Germany: Enercity Successfully Sells Electricity From EV Batteries on the Power Market

Why It Matters

The pilot shows commercial EV fleets can generate revenue and grid services, accelerating renewable integration. Clear regulation will be critical to unlocking a new business segment for utilities and corporate fleet owners.

Key Takeaways

• Enercity traded 0.1 MW from 12 VW ID. Buzz EVs.
• 145 transactions generated $165‑$330 revenue in 53‑hour trial.
• B2B fleets prove viable mobile storage for grid flexibility.
• Regulatory clarity needed for mobile storage grid‑fee treatment.
• Pilot paves way for future fleet‑based virtual power plants.

Pulse Analysis

The successful bidirectional charging test by Enercity marks one of the first real‑world demonstrations of vehicle‑to‑grid (V2G) services in a commercial setting. Over a 53‑hour window in early May, twelve VW ID. Buzz vans supplied up to 0.1 MW of electricity to the German intraday market, executing 145 trades through an aggregated charging infrastructure. By automatically buying power when prices dipped and selling when they rose, the fleet behaved like a stationary battery, proving that algorithmic control can turn a mobile fleet into a flexible grid asset without disrupting daily operations.

The trial also showed that even modest capacity can generate measurable income. The low‑three‑figure revenue—estimated between $165 and $330—demonstrates a proof‑of‑concept for monetising idle battery capacity during nights and weekends. For B2B operators, fleet vehicles are easier to manage than private cars because availability, charging points and usage patterns are predictable. This predictability reduces the risk of vehicle‑unavailability that has hampered many V2G pilots, positioning commercial fleets as a near‑term source of ancillary services such as frequency regulation and peak‑shaving.

Scaling the model, however, hinges on regulatory certainty. German authorities are still debating whether electricity stored temporarily in mobile batteries should be subject to the same grid fees and taxes as stationary storage, a question that could affect profitability. Enercity expects a framework under the AgNes grid‑fee system by the end of 2028, which would standardise treatment across the country. If resolved, utilities and energy retailers could offer fleet‑aggregation services at scale, turning thousands of corporate EVs into a decentralized virtual power plant and creating a new revenue stream for both providers and their business customers.