Mega Power 4000 Series

High-Density Battery
Storage in a Standard
20-Foot Design.

Up to 4.69 MWh in a standard 20-ft
container, engineered for high density,
efficient transport and two-high stacking.

Mega Power 4000（20ftコンテナ型蓄電システム・2段積み）

More Energy, Less Footprint, Global Deployment

High Capacity

Up to

4.69 MWh

Built for
extra-high-voltage
BESS projects

Two-High Stackable

Capacity per Footprint*1

~3.4× the

Reduces land and
site-preparation requirements

Built for Demanding Conditions

Up to

IP56*2

Enhanced
Salt-Corrosion
Protection

Built for Global Deployment

ISO-standard

20-ft Container

Shippable overseas
for global
deployment.

*1 Approximate capacity ratio of a two-high Mega Power 4000 configuration versus one Mega Power 2700A within the same footprint.
*2 IP55 is standard; IP56 is available as an option.

Up to 9,384 kWh on a Single 20-ft Container Footprint

Existing Model

現行品 Mega Power 2700 のイメージ

Mega Power 2700

2,742 kWh

Same Footprint.
Higher Density.

Mega Power 4000 1台で約1.7倍の大容量

One Mega Power 4000 Unit

〜 4,692 kWh

2-high Stackable.
Even Higher Density.

Mega Power 4000 2段積みで約3.4倍の大容量

Two Mega Power 4000 Units

〜 9,384 kWh

Proven Expertise. Built for Utility Scale.

Mega Power 4000 combines PowerX’s design, manufacturing, and operational expertise in a high-capacity BESS delivering up to 4.692 MWh per unit. Its high energy density supports extra-high-voltage battery plants and generation co-location projects worldwide, helping streamline deployment from transport and installation through operation.

Illustration of an Extra-High-Voltage BESS Installation

大規模蓄電所（特別高圧）への設置イメージ

Illustration of a Renewable Energy Power Plant Co-location

再エネ発電所への併設イメージ

Resilience Built In. 
Flexibility by Design.

Designed for seismic and wind resilience, with optional noise control for safe, reliable operation across diverse sites.
耐地震性能のアイコン

Seismic Resilience

Standard

Seismic structural design and an integrated IMU (inertial measurement unit) provide real-time monitoring and protective control, helping reduce fire risks associated with mechanical damage or contactor failure.
耐風性能・台風対策のアイコン

Wind & Typhoon Resilience

Standard

When properly anchored, the container is engineered to withstand wind speeds equivalent to a Category 5 hurricane (78-81 m/s). 
騒音低減・ノイズキャンセリングのアイコン

Advanced Noise Control

Optional

Passive sound attenuation and active noise control help reduce operational noise, enabling greater siting flexibility near communities and facilities.

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)

Product Lineup

Mega Power 4000 製品外観

With Module Type A

With Module Type B

Nominal BESS capacity
4,692 kWh
4,233 kWh
Rated BESS capacity
4,222 kWh
3,810 kWh
Operating Voltage Range
1,040-1,477 V
Dimension
W 2,438 mm x D 6,058 mm x H 2,500 mm
Container Type
20-ft Standard
Weight
< 35,000 kg
Battery Chemistry
LFP
Cooling Type
Liquid Cooling
Standards & Certifications (including planned certifications)
UN 3536; CSC; IEC 62619; IEC 62933; UL 9540A; UL 1973; JC-STAR STAR-1 (Level 1)

In-House Manufacturing. Made in Japan.

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.

View Details

Grid Connector for BESS（PCS・変圧器・高圧配電盤スキッド）

Watch the Mega Power 4000 Series & Grid Connector Product Launch

Mega Power 4000シリーズ、Grid Connector 製品発表動画サムネイル（準備中）

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