Germany’s fast‑charging rollout has another practical test case. On 23 October 2026 the Stadtwerke Stuttgart (SWS) and ADS‑TEC Energy put a ChargePost system into operation at the VfB Clubzentrum (parking P3, Mercedesstraße) that offers two public high‑power points up to 250 kW while using only a 63 kW grid connection. The installation includes a 201 kWh stationary battery that supplies the peak power; payments work ad‑hoc via QR, credit card or mobile pay and with roaming cards and the SWS app.
How the system works
The ChargePost ties a high‑capacity battery to two CCS fast‑charging outlets. When a vehicle requests a burst of power the battery supplies the additional instantaneous megawatts so the physical grid feed does not need to be scaled to the charger’s peak rating. At the VfB site ADS‑TEC says the 201 kWh storage lets the installation deliver up to 250 kW per vehicle despite a standard low‑voltage connection of 63 kW. The operator also installed 22 AC wallboxes (11 kW each) on the same site and supplies the whole facility with renewable energy.
ADS‑TEC’s CEO Thomas Speidel described the set‑up as “a parade example” for locations with limited grid capacity, saying the battery “boosts the available energy to high performance” and avoids major excavation and transformer works at the parking area. The VfB unit follows an earlier joint installation by SWS and ADS‑TEC at Zuffenhausen opened in October 2025, proving the concept is already being rolled out beyond single pilots.
Fast chargers, tight grids — an emerging pattern
The Stuttgart ChargePost highlights a growing theme in Germany’s charging expansion: many desirable sites lack medium‑voltage grid capacity or would face long, costly connection lead times. At the same time the federal Deutschlandnetz programme and private operators are adding motorway and local fast‑charging parks; recent weeks have seen new Deutschlandnetz points go live, underlining the pressure to deploy where drivers need them. Battery buffering and modular systems are one practical response to those constraints.
