2.5MW Pre-Integrated Transformer Containerized Energy Storage System

Our 2.5MW pre-integrated transformer containerized energy storage system delivers scalable grid-side and large-scale commercial storage with turnkey deployment.

• 2.5MW AC output; flexible capacity (5–7.5MWh); ≥91% round-trip efficiency; ≤100ms response time.

• LFP battery: ≥8000 cycles at 90% DoD; 1500V DC; liquid cooling.

• PCS with ≥99% efficiency; THDi ≤2%; integrated 2750kVA dry-type transformer supports 10.5–35kV grid connection.

• 40ft IP54 container with rack-level fire suppression, local SCADA, and cloud monitoring.

• Complies with IEC 62933, UL 9540, IEEE 1547; supports frequency regulation, peak shaving, and black start.

• Factory pre-assembled for rapid deployment; fast delivery and reliable quality.

Product Description

This product is a standardized containerized energy storage system designed for grid-side and large-scale commercial & industrial applications. The system has a rated power of 2.5MW, with a flexible energy capacity (e.g., 5MWh, 7.5MWh) configurable to project requirements. It is housed in a standard 40-foot container, pre-integrated with high-efficiency Power Conversion Systems (PCS), modular Lithium Iron Phosphate (LFP) battery racks, a medium-voltage dry-type transformer, liquid/air cooling thermal management, a multi-level fire protection system, and an integrated Energy Management System (EMS).

Utilizing a factory-preassembled and tested, full-container delivery model, the system enables rapid on-site installation and grid connection, significantly reducing project timelines. It supports millisecond-level power response and provides grid-scale functionalities such as frequency regulation (primary/secondary), peak shaving, renewable energy smoothing, voltage support, and black start capabilities. It also enables demand management and demand-side response.

Designed in compliance with international standards including IEC 62933 and UL 9540, the system offers high safety, reliability, and intelligent operation and maintenance features, delivering a scalable, turnkey large-scale energy storage solution.

Technical Specifications

Item	Parameter	Remark
I. System General
Rated AC Output Power	2.5 MW
Rated Energy Capacity (Typical)	5 MWh	Flexible configuration (e.g., 1.5h, 2h, 3h discharge duration)
System Round-Trip Efficiency (AC-AC)	≥ 91%	Including PCS & transformer losses
Response Time	≤ 100 ms	From zero to full power output
Operation Mode	Grid-tied / Islanded (Optional)
Communication Interface	IEC 61850, Modbus TCP/RTU, CAN	Compatible with higher-level dispatch systems
II. Battery Energy Storage System (BESS)
Battery Chemistry	Lithium Iron Phosphate (LFP)
System Voltage	[e.g.,] 1500 V DC
Design Cycle Life	≥ 8000 cycles @ 25°C, 90% DoD
System Energy Retention	≥ 80% @ 10 years
Cooling Method	Liquid Cooling (Recommended) / Forced Air	Select based on configuration
III. Power Conversion System (PCS)
Unit Rated Power	2.5 MW (or 2×1.25MW in parallel)
Topology	Three-level / Modular Multilevel Converter (MMC)
Maximum Efficiency	≥ 99%
Power Factor Range	-0.95 ~ +0.95 adjustable
Current THDi	≤ 2% @ rated load	Compliant with IEEE 1547a
IV. Medium Voltage (MV) Transformer
Type	Dry-type (SCB Series)	Flame-retardant, explosion-proof, maintenance-free
Rated Capacity	2750 kVA
Voltage Ratio	[e.g.,] 35 kV / 0.69 kV or 10.5 kV / 0.48 kV	Customizable per project
Insulation Class	Class H
Enclosure Protection	IP54 (inside container)
V. Container & Auxiliary Systems
Container Specification	40ft High Cube Standard (Custom height available)	Dimensions: L×W×H (mm)
Enclosure Protection	IP54
Thermal Management	Industrial Precision A/C + Zoned Liquid Cooling Units	Maintains cell temperature differential ≤3°C
Fire Protection System	Total-flooding Gas Suppression (HFC-227ea / Novec 1230) + Rack-level Protection	Meets UL 9540A test requirements
Monitoring System	Local SCADA + Cloud-based Remote O&M Platform
VI. Environmental & Certification
Operating Temperature Range	-25°C ~ +50°C	Derated operation at temperature extremes
Relative Humidity	≤ 95%, non-condensing
Altitude	≤ 4000 m (Derated above 1000m)
Design Standards	IEC 62933, UL 9540, GB/T 36276, NB/T 31016
Grid Compliance	IEEE 1547, IEC 61727, CE, UKCA (Optional)

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