Designed for real-world projects, StaX features a compact, modular design that fits easily into space-limited sites and enables fast stack-and-start installation without complex wiring. Powered by advanced BMS, the StaX Series ensures stable operation by maintaining SOC consistency and isolating faulty modules to avoid system downtime. With flexible energy management and easy system expansion, StaX delivers a reliable, future-ready energy storage platform built to grow with your needs.
StaX-M30/50 - Stackable C&I Energy Storage System
200% PV Overloading For Max Self-Consumption
StaX is engineered for up to 200% PV overloading, allowing you to capture every extra watt from your rooftop system. Instead of wasting midday generation, StaX stores it for use in the evening or during peak-rate periods—helping you double your solar utilisation and significantly cut your electricity bills.
Stackable , Plug-and-Play for Commercial Energy
StaX’s innovative stackable design enables tool-free, wiring-free installation. Expand precisely to meet your project needs, efficiently and safely. Expand your system as easily as stacking building blocks.
12 kWh Modular Design for Precise Scaling
With StaX’s 12 kWh stackable modules, expand capacity module by module to perfectly match your project, maximising efficiency while minimising upfront costs.
Mix and Expand with Ease
StaX batteries feature built-in BMS for automatic dynamic balancing, letting you grow your system as your project evolves, saving cost and future-proofing your investment.
StaX M30/50 - Stackable C&I Battery Storage
StaX’s stack-and-play modules connect effortlessly, eliminating extra wiring and creating a clean, modern system that fits naturally into any space. Outdoor installations face rain, dust, and temperature shifts. StaX’s robust design, paired with built-in battery heating, ensures stable performance in any condition.
- Built-in Safety
- Scalability
- Dynamic Balancing
- Battery Heating
- Bypass Technology
- UPS Level Backup
- IP66 Protection
Built-in Safety
Cell-level insulation, smart BMS, and built-in aerosol protection ensure all-around safety.
Scalability
Scale up your capacity or power output easily, and connect up to six Stax systems for greater flexibility.

Dynamic Balancing
StaX actively balances each cell in real time, improving energy efficiency and extending overall battery lifespan.
Battery Heating
Built-in battery heating system, automatically maintains optimal cell temperature in cold conditions.

Bypass Technology
Built-in AlphaESS BypassTech automatically isolates faulty modules without system shutdown.
UPS Level Backup
With UPS-level switching under 10 ms, StaX keeps your business running without interruption
IP66 Protection
IP66-rated and operable from -20°C to 50°C for year-round reliability
FIND AN AUTHORISED INSTALLER
All AlphaESS UK Authorised Installers are trained and certified to carry installations across our product range. You can search for an installer who covers where you live and receive quotations based on your system requirements.








