May 19, 2026 | Posted by Abdul-Rahman Oladimeji
PowerX, a Japanese energy storage firm, has unveiled a mounted battery energy storage system for data centers. The product concept, dubbed "PowerX Energy Blade," is a high-output, rack-mounted lithium-ion battery storage system. The company claims that the unit will be optimized for rapid charge and discharge, enabling bidirectional response to grid supply-demand fluctuations within milliseconds. In addition, the company claims that the system supports 800V DC power delivery required by the latest AI GPUs and can also replace conventional battery backup units
The system is still in development, with availability expected in 2027, and PowerX is currently seeking partners for deployment. The company says the system could enable new revenue streams for data centers through grid flexibility markets and demand response programs, while also supporting earlier grid connections under flexible schemes, improving power contract terms, and allowing higher server density within existing power limits.
PowerX is a large-scale developer of battery energy storage systems in Japan and has also commercialized a containerized data center product called “Mega Power DC,” which leverages its expertise in container assembly, DC power control, and thermal management. The company plans to begin mass production after market validation. In February, Internet Initiative Japan partnered with PowerX to explore containerized data centers integrated with BESS.
