AlphaESS introduced its STORION-M50 series modular hybrid ESS system, which can deliver up to 50 kW of power and 76 A of current
The system offers up to 50 kW of continuous 3-phase backup power with a maximum 76 A current in off-grid mode
The company also showcased its upcoming G3H50 Series Compact Hybrid Solution at the event
Driven by the pursuit of uninterrupted, reliable, affordable, and clean energy, Europe is witnessing growing demand for PV + storage systems, particularly from the C&I sector. Acknowledging this evolving trend, numerous inverter and energy storage companies showcased their latest hybrid inverter and ESS solutions at Intersolar Europe 2025.
AlphaESS, a Chinese energy storage solutions and service provider, was among the companies presenting its latest high-capacity 3-phase storage systems, aimed at Europe’s C&I market. During a one-on-one conversation with Shravan Chunduri, Head of Technology at TaiyangNews, Julian G. Schoppe, Business Development Manager at AlphaESS EMEA, provided an overview of the company’s newest C&I-scale ESS products – the STORION-M50 and G3H50 series.
Schoppe, who oversees AlphaESS’s operations in Germany, Austria, and Switzerland, began by sharing the company’s background. Originally founded as a software engineering firm specializing in battery management system (BMS) programming, AlphaESS later expanded into battery module manufacturing. This development was followed by full system integration with 3rd-party inverters, enabling the company to serve a broad range of markets – from balcony PV and residential setups to C&I applications.
Introducing the STORION-M50 modular hybrid ESS, Schoppe outlined its key features. The system is equipped with 4 MPPT channels, each supporting up to 40 A of DC, and operates across a wide voltage range of 150 V to 850 V. With 100% DC/AC oversizing capability, the unit delivers a maximum 3-phase output power of 50 kW and 76 A in on-grid mode.
The system integrates 2 battery ports, each capable of 70 A charging and discharging, and is paired with a modular battery bank measuring 1,100 × 660 × 1,400 mm. The displayed configuration offered a storage capacity of up to 216 kWh.
For backup power, the system can switch to UPS mode using the inbuilt static transfer switch (STS), providing 50 kW of continuous 3-phase backup power at up to 76 A. To enhance operational flexibility, the system also features a diesel generator (DG) port.
Schoppe also introduced the G3H50 Series, a compact ESS solution. Configured with 5 battery modules, this system delivers 50 kW of continuous backup power. Each module, rated at 314 Ah with a working voltage of 76.8 V, stores 24.1 kWh of energy. To meet high-load backup demands in C&I applications, the system is capable of discharging up to 157 A DC, according to company specifications.
Designed for harsh environments, it supports a wide operating temperature range of –10°C to +50°C, making it suitable for extreme winter and summer conditions.
Featuring a 3rd-party power conversion system (PCS), the G3H50 solution includes 4 MPPT channels, each supporting up to 2 strings. Additionally, it comes with 2 integrated power switches – one for the grid and one for the DG input. Schoppe mentioned that the product is expected to be commercially available by next year.
Addressing the growing demand for low-noise energy storage systems (ESS) from C&I customers, AlphaESS has developed liquid-cooled, small-scale ESS solutions. During the interview, Schoppe highlighted 2 models, a 150 kW variant and a 125 kW version, both designed for indoor and outdoor installations.
The 150 kW model, equipped with 314 Ah battery units offering up to 52.24 kWh of storage each, is cooled using a mixture of water and ethanol. This system supports a total storage capacity of up to 313 kWh. Notably, Schoppe mentioned that the system’s integrated power conversion system (PCS) is also liquid-cooled. As this system lacks PV input capabilities, it is designed exclusively as an AC-coupled solution.
On the other hand, the 125 kW model features a different configuration. It includes 4 DC-DC units and liquid-cooled battery banks, offering hybrid functionality. Equipped with a static transfer switch (STS), this system can supply backup power during grid outages. In contrast to the 150 kW variant, the PCS in this version is not liquid-cooled.
Lastly, Schoppe presented AlphaESS’s latest utility-scale liquid-cooled ESS solution. This 20-ft containerized model has increased its storage capacity to 5 MWh, up from the previous 3.7 MWh version, while maintaining the same container size. Notably, these utility-scale systems do not include an integrated PCS.