5.6 MWh Storage System in Austria Demonstrates a New Model for Industrial Energy Management

Combining battery technology and intelligent control to address rising energy and grid costs

Rising energy prices and grid tariffs are increasingly shaping the cost structure of industrial operations. In many cases, grid fees are no longer driven by total consumption, but by short-duration peak loads that define the contracted capacity. Managing these peaks has therefore become a key lever for cost control.

This shift is reflected in a recently commissioned project in Salzburg, Austria, where a large-scale battery energy storage system with an output of 2.8 MW and a capacity of 5.6 MWh was deployed for an industrial customer. The system consists of 28 units of FOX ESS G-MAX powered by NGEN, combining NGEN energy management with FOX ESS battery technology, configured as an integrated BESS for operational flexibility and cost optimization.

The system is designed to capture surplus photovoltaic (PV) generation on site and reallocate it to periods of higher demand or higher market prices. This directly increases self-consumption and reduces dependency on grid imports, particularly during peak tariff intervals.

From a technical perspective, G-MAX is designed as an AC-coupled, all-in-one industrial battery system that integrates storage, power conversion, safety systems and control within a single enclosure. This architecture simplifies installation and ensures standardized deployment across industrial sites.

The system supports modular scaling up to 12 MW and 25.8 MWh configurations. It 

incorporates advanced thermal management with liquid cooling, enabling stable operation under continuous industrial load and extending system lifetime. 

A central economic benefit is peak demand management. Industrial grid fees are often determined by short peaks that occur during production cycles. By dynamically supplying part of the load during these intervals, the system reduces the effective grid draw and lowers the contracted capacity. Over time, this leads to a measurable reduction in grid-related costs.

However, the performance of such systems depends not only on hardware, but on how they are operated.

The deployed solution integrates battery technology from FOX ESS with NGEN’s energy management platform SG Connect and its optimization AI module SG Brain. Within this architecture, FOX ESS G-MAX powered by NGEN operates as an active component of the energy system rather than a static storage asset.

SG Brain processes multiple inputs in real time, including load profiles, PV generation forecasts, battery state of charge, and market price signals (day-ahead and intraday). Based on these parameters, it determines the optimal charging and discharging strategy, aligning energy use with both operational needs and market conditions.

Integration of hardware and software is designed to ensure coordinated operation between generation, storage, and consumption. This reduces the complexity typically associated with multi-vendor systems and enables a unified operational approach.

From a broader perspective, projects of this scale reflect a structural shift in industrial energy management. Energy is no longer treated as a fixed cost, but as a variable that can be actively managed, optimized, and, where applicable, monetized.

For industrial companies facing increasing price volatility and evolving regulatory frameworks, such solutions provide both cost predictability and operational resilience.