AlphaESS is proud to introduce the Aster TB250/TB500, a next-generation commercial and industrial BESS designed to meet the growing demand for safer, more scalable, and easier-to-deploy energy storage across Europe.

As energy prices fluctuate and grid requirements become more complex, businesses need storage systems that are not only powerful, but also flexible, reliable, and simple to integrate. The Aster TB250/TB500 was built precisely with these challenges in mind.

The system is also compatible with both 400V and 800V PV systems, enabling smoother integration into different electrical infrastructures without requiring additional transformers in many scenarios.

Built for Safety at Every Level

Safety is at the core of this new battery energy storage system.

The Aster TB250/TB500 features multi-layer protection from cell to system level, including advanced thermal management, module-level fire suppression, and an independent fire protection system. In addition, the system has achieved UL9540A testing at pack level, demonstrating strong performance in thermal runaway containment.

For commercial and industrial sites, this means enhanced operational safety, improved risk control, and greater confidence when deploying large-scale battery storage.

Flexible Capacity for Growing Energy Needs

Energy needs rarely stay the same — and your C&I BESS shouldn’t limit future expansion.

The Aster TB250/TB500 supports parallel connection of up to 6 units, allowing projects to scale smoothly up to 3 MW / 8.46 MWh. This flexible architecture makes it easier to match storage capacity with evolving load demands, PV expansion, or new energy management strategies.

Whether for factories, business parks, or large PV installations, the system grows with your project — not against it.

Designed to Simplify Installation

Time and labor costs are critical in commercial and industrial energy storage projects. The Aster TB250/TB500 helps reduce both.

Its all-in-one integrated design minimizes on-site assembly work, while front-access cable routing simplifies layout planning, reduces foundation cabling requirements, and makes future inspection and troubleshooting more convenient.

The result: faster deployment, lower installation complexity, and improved project efficiency.

Intelligent Operation with Advanced BMS

Behind the hardware, a powerful Battery Management System (BMS) ensures stable and efficient performance.

With intelligent balancing and cloud-based monitoring capabilities, the system helps maintain battery consistency, optimize usable capacity, and support remote diagnostics and maintenance. This enables operators to better manage performance while reducing unexpected downtime.

For energy-intensive businesses, this translates into more predictable operation and better long-term value from their commercial energy storage system.

Ideal for Solar Plants and Industrial Facilities

The Aster TB250/TB500 is engineered for a wide range of commercial and industrial energy storage applications, including:

• Large-scale solar PV plants seeking to increase self-consumption and reduce curtailment

• Industrial and manufacturing facilities looking to manage peak demand, improve energy resilience, and lower electricity costs

By combining safety, scalability, and ease of deployment, the system provides a strong foundation for future-ready energy infrastructure.

Powering Europe’s Energy Transition

With the launch of the Aster TB250/TB500, AlphaESS continues to expand its portfolio of advanced BESS solutions for the European market. The system reflects our commitment to helping businesses transition toward cleaner, more resilient, and more cost-effective energy systems.

As commercial and industrial users take a more active role in energy management, flexible and intelligent battery storage will be a key enabler — and the Aster TB250/TB500 is ready to lead that shift.