Salzburg AG deploys ADS-Tec fast charger for grid stability

  • December 2, 2025
  • Steve Rogerson
From the left, Michael Baminger, Herwig Struber and Thomas Speidel.

Austrian energy and infrastructure provider Salzburg AG is using ADS-Tec Energy’s ChargePost to support fast EV charging and grid stability.

ChargePost enables fast EV charging and provides battery storage for grid support. German firm ADS-Tec Energy is a specialist in battery-based energy storage.

Salzburg AG and ADS-Tec have announced the successful technical prequalification of the ChargePost fast charging system for participation in the Austrian ancillary services market. Salzburg AG has integrated ChargePost into its virtual power plant, where it now contributes to maintaining grid stability.

The prequalification confirms that ChargePost can provide short-term power adjustments to help stabilise grid frequency. This represents a new category of fast charging infrastructure, one that not only serves electric vehicles but adds value in an increasingly flexible and decentralised energy system.

ChargePost combines fast DC charging of up to 300kW with up to 201kWh of battery capacity, even when connected to the standard low-voltage grid. Its bidirectional storage and intelligent energy management enable peak shaving capabilities, reduced grid connection costs and stable operation and full-power EV charging at any time.

These capabilities illustrate how battery-integrated fast charging can operate efficiently and reliably, even in areas with limited local grid capacity.

At a joint event in Salzburg last month, Thomas Speidel, CEO of ADS-Tec Energy, with Salzburg AG board members Michael Baminger and Herwig Struber, marked ChargePost’s prequalification.

“To accelerate growth, fast charging has to evolve from being a cost centre,” said Speidel. “With intelligent buffering and stable grid behaviour, systems like ChargePost open up new flexibility in the operation of charging infrastructure. Our work with Salzburg AG shows how high-power charging and grid stability can go hand in hand.”

ADS-Tec has also won a tender from Salzburg AG (www.salzburg-ag.at) for 20 additional ChargePost systems. This demonstrates the importance of the two companies’ partnership as they continue to build-out battery-supported fast charging infrastructure in the region.

ChargePost’s prequalification demonstrates it meets the criteria required to provide ancillary services, a capability traditionally reserved for standalone, large-scale battery storage systems. This compact multi-use architecture enables fast charging and grid support in a single system, offering utilities and charging operators a scalable approach that can be replicated across additional regions and markets.

With more than a decade of experience in lithium-ion technologies, ADS-Tec Energy (www.ads-tec-energy.com) develops and manufactures battery storage and fast charging systems, including energy management software. It is headquartered in Nürtingen, Baden-Württemberg, Germany.