Two Sizes for All Needs
Mega Power 2700A
Nominal Capacity 2,742 kWh
Rated Capacity 2,468 kWh
Mega Power 2500
Nominal Capacity 2,507 kWh
Rated Capacity 2,256 kWh
Unlocking the Full
2.7 MWh capacity enables
Approved in Multiple Government Subsidy Programs Total Capacity Adopted 2,952 MWh※1
Why PowerX
Made in Japan
High performance, quality, and safety
Robust Security
End-to-end in-house software development in Japan to ensure security, stability, and full system control
Reliable Support & Maintenance
Factory-certified maintenance and OEM parts delivered locally for maximum uptime
PowerOS
Standard battery management
Installations
Grid Battery Energy Storage System (BESS)
Optimal solutions for high‑voltage, extra‑high‑voltage battery farms with renewable integration
Comprehensive High-Voltage Battery Farm Solution
Integrated supply of BESS, PCS, transformers, switchgear, EMS, and output curtailment units.
Proven Track Record in Government Subsidy Programs
Extensive experience with subsidy application requirements and scoring metrics, with multiple selections by METI, MOE, MLIT, and local governments.
Robust Security from Hardware to Cloud
Multi-layered security ensures safe remote monitoring and stable system operation across all levels.
Commercial & Industrial Battery Energy Storage System (BESS)
Energy storage for carbon reduction, cost savings, and BCP. Optimizes energy use in factories, warehouses, and buildings, adjusting to changing conditions with software-driven control.
Reduction in Electricity Costs 38%
Maximize renewable energy use, reduce peak electricity costs with charging and discharging control.
Increase Renewable Energy Utilization 40%
By integrating batteries with solar power systems, maximize the use of excess power.
Reliable, Japan-Made
Vertically integrated hardware and
PowerX designs and develops everything from hardware to software in-house, ensuring swift and reliable support when it matters most.
Cloud
Site Controller
Energy Management
Battery System Controller
Rack Controller
Module Cotroller
Comprehensive
Security at
Every Level
PowerX systems follow international standards to ensure safe deployment, even in critical infrastructure.
Hardware Designed for Global Security Compliance
Built to meet global standards including EF 263.7 and U.S. cybersecurity policy NERC CIP.
Secure Remote-Control System
Compliant with IPA (ERAB, IoT Security) guidelines. All PowerOS infrastructure is hosted in Japan.
Robust Information Security Management
Certified under ISMS/ISO 27001 with full procedures and response systems in place.
Top-Tier
We use globally proven, cost-effective cells that deliver both high performance and safety, meeting international standards.
From Grid-Scale Storage to Industrial Applications
Mega Power 4000 supports front-of-meter and behind-the-meter applications—from grid-scale storage and generation co-location to peak shaving and backup power for factories, logistics facilities, and data centers.
Front-of-Meter (FOM)
Grid-Scale Battery Storage
Ancillary Services & Balancing Market
Capacity Market
Wholesale Electricity Market (JEPX)
Generation Co-Location
Long-Duration Storage (up to 8 hours)
Behind-the-Meter (BTM)
Peak Shaving & Energy Cost Savings
Business Continuity & Backup Power
Renewable Energy Self-Consumption
Microgrids
Demand Response (DR)
Battery Storage System
Experts in the Japanese
Expanded Site Possibilities
Flexible layouts enable installation even on smaller sites.
Improved Transport Flexibility
Optimized dimensions and weight make transportation easier and more flexible.
PowerOS for Efficient
Battery Management
Access your real-time energy dashboard
Supporting over 2,500 facilities globally, it ensures secure, timely maintenance and rapid dispatch of on-site support if required.
Deployed Across Japan
Reliable domestic batteries, perfectly sized for your location. Full support from installation to operation.
Two Sizes for All Needs
Mega Power 2700A
Mega Power 2500
Nominal Capacity
2,742 kWh
Rated Capacity
2,468 kWh
Operating Voltage Range
850 - 1,241 V
Dimensions
W 2,438 mm
D 6,058 mm
H 2,896 mm
Weight
~29,600 kg
Battery Type
LFP
Cooling Type
Air Cooling
Certifications & Safety Standards
IEC62619, IEC 62933,
JIS 8715-2, JIS C4441,
UL9540A, UL1973
JC-STAR ★1 (Level 1)
Nominal Capacity
2,507 kWh
Rated Capacity
2,257 kWh
Operating Voltage Range
1,040 - 1,477 V
Dimensions
W 2,438 mm
D 2,991 mm
H 2,896 mm
Weight
~25,000 kg
Battery Type
LFP
Cooling Type
Liquid Cooling
Certifications & Safety Standards
IEC62619, IEC 62933,
JIS 8715-2, JIS C4441,
UL9540A, UL1973
JC-STAR ★1 (Level 1)
In-House Manufacturing.
First Deliveries Scheduled for 2027.
Grid Connector for BESS
Factory-Integrated for Faster Grid Connection.
This factory-integrated package combines a power conversion system (PCS), transformer, and switchgear to connect BESS to the grid—streamlining procurement and reducing on-site work for faster utility-scale deployment.
※1 As of May 4, 2026
BESS inquiries