Vattenfall and Terralayr Launch Nationwide First: Go-live of virtual 5 MW Battery Portfolio for a Flexible Power Grid

Berlin (Germany) - Vattenfall and Terralayr have launched a nationwide, decentralized battery storage network in Germany for active market participation. The goal is to provide scalable flexibility and stability in the electricity market in order to accelerate the transition to a climate-neutral energy system and reduce reliance on fossil-fuel peak-load power plants.

With the go-live of an initial capacity tranche, eight large-scale batteries at various locations across Germany can now be digitally controlled as a virtual portfolio via the LAYR platform. Vattenfall is responsible for energy trading optimization, while Terralayr provides the technical infrastructure. For the first time, this cooperation enables the digital, virtual aggregation of smaller assets into a marketable portfolio with reduced failure risk.

Flexibility at the push of a button: Virtual storage portfolio in live operation

Vattenfall has started the active commercialization of a virtual storage portfolio from Terralayr’s decentralized battery park. The initial capacity tranche comprises 5 megawatts and is to be gradually expanded to 55 megawatts. Eight large-scale batteries distributed across Germany are digitally managed without the need for manual intervention at individual storage units.

“Decentralized and flexible battery storage networks like this are a key building block for a more reliable and climate-neutral energy system,” says Björn Schneegans, Head of the Origination Team at Vattenfall. “We are no longer just talking about the theory of flexibility — we are now implementing it at scale.”

This unique approach integrates smaller assets into large-volume marketing models. At the same time, the portfolio effect minimizes outage risk: if one individual storage unit is temporarily unavailable, output is seamlessly provided by other units in the pool. This is intended to offer grid operators and customers flexibility precisely when it is needed most.

Pioneering work in the electricity market: LAYR platform as the basis for scalable storage flexibility

Terralayr aggregates the storage portfolio via its proprietary LAYR platform, which can also be used by external storage owners and companies with their own trading desks. Storage owners thus receive secured revenues through energy companies such as Vattenfall, while professional market participants use the platform as technical infrastructure.

“The go-live with Vattenfall demonstrates that LAYR operates reliably as infrastructure in live operation,” explains Philipp Man, Founder and CEO of Terralayr. “Vattenfall provides optimization and secured revenues, we provide the digital and physical infrastructure. It is precisely this separation of storage ownership and asset management that makes flexibility scalable.”

According to the energy company, the partnership between Vattenfall and Terralayr represents a first of its kind on the German energy market. It combines the market expertise of an established energy supplier with the technological agility of a tech company. The goal is to rapidly expand the storage ecosystem in Germany in order to advance power grid decarbonization and reduce dependence on fossil-fuel peak-load power plants.

Source: IWR Online, Mar 03 2026