85 MW / 170 MWh: NGEN commissions Austria’s largest battery storage system

A two-hour system at the German interface

With 85 MW of operating power and 170 MWh of capacity, Wagenham falls into the two-hour duration class. The site sits in Upper Austria close to the German border, a strategic point within the European power system. The asset will absorb and release energy in response to fluctuations in wind and solar generation and support grid stability.

Into the ancillary services market under a staged ramp-up

The asset entered commercial operation through a controlled, staged ramp-up, with available power raised in defined increments as commissioning checks were completed. The asset is now in operation, trading on the market and delivering ancillary services.

Optimisation through a proprietary energy platform

Wagenham is integrated into NGEN’s proprietary energy platform, which combines storage asset management, power trading and the delivery of ancillary services. The platform continuously monitors the state of the asset, market conditions and system requirements, and optimises charging, discharging and available capacity on that basis.

Combining large-scale storage infrastructure with in-house capability in software, aggregation and trading is one of NGEN’s core competences. It is what turns storage capacity into an asset that earns across several markets at once rather than a single revenue stream.

Delivered on schedule, by our own team

Every storage asset is first and foremost a financial investment, and time is not a soft parameter: it determines the return. Each week of delay means lost revenue, missed market opportunity and a higher cost of capital, and no amount of technical performance afterwards can recover it.

Wagenham was delivered by NGEN’s own team. Working with our own people means control over the schedule, faster decisions, fewer interfaces between parties and materially lower execution risk, and that translates directly into the financial performance of the asset. It is the reason a project of this scale could be kept on the timeline set at the outset.

The third step in Austria, and not the last

Wagenham follows NGEN’s earlier Austrian projects in Arnoldstein, Carinthia, and Fürstenfeld, Styria, each of which was the largest system of its kind in the country at the time of commissioning.

The requirement is there to meet. Austria is expected to need around 8.7 GW of battery storage by 2040 if it is to integrate its planned renewable capacity, against a fraction of that installed today.

700 MWh of battery storage under management

NGEN has approximately 700 MWh of battery storage in operation, with further projects under construction and in development. The company develops, builds and operates utility-scale storage assets across a number of European markets, including Slovenia, Austria, Germany, Poland, Croatia, Portugal, Latvia and Romania.

Alongside utility-scale systems, NGEN develops residential and commercial storage solutions, proprietary energy management software, flexibility aggregation, and trading in both electricity and ancillary services. These activities are interconnected: distributed and utility-scale capacity is managed through the same platform and dispatched into the same markets.

Wagenham sets the standard for how NGEN intends to deliver every project that follows.