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Making Renewable Energy Always Available

Polinovel provides containerized battery energy storage systems (BESS) built with advanced lithium-ion technology, integrated fire suppression and intelligent thermal management. Designed for renewable integration, microgrids, and peak-shaving applications, our battery storage systems provide verified reliability and efficiency in demanding field environments.
Unrivaled Energy for Every Project

 

  • Comprehensive Safety Built into Every System

    Integrated fire suppression, thermal management, and explosion protection systems form a robust multi-layer safety architecture, ensuring secure, stable, and compliant operation under diverse environmental conditions.

    Multi-layered security architecture energy storage system
  • Built to Scale with Your Energy Needs

    Polinovel containerized BESS support multiple parallel connections to easily scale power and capacity as your project grows. The modular architecture simplifies installation, operation, and maintenance, reducing project complexity and deployment time.

    productcate-1560-1040
  • Engineered for Rugged Reliability

    Built with industrial-grade protection against dust, humidity, and corrosion, Polinovel containerized BESS operate reliably in challenging outdoor and industrial environments, ensuring system longevity and reduced maintenance costs.

    IP54 containerized energy storage system
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Flexible Containerized Battery Storage Solutions 

 

 

Containerized BESS for Industrial, Utility and Microgrid Projects

 

Polinovel manufactures LFP containerized battery energy storage systems, with product series from 1.2 to 6.25 MWh for EPC contractors, industrial facilities and renewable energy projects.

 

Factory Peak Shaving

For 400 V grid-connected sites, compare the 1.2–2.89 MWh liquid-cooled BESS, with 625–1,500 kW output options for load shifting and industrial demand management.

Utility and Renewable Plants

The 3.85–5 MWh on-grid series pairs liquid-cooled battery storage with a separate inverter and transformer unit for 10–35 kV grid connection.

High-Capacity Integrated Storage

The 6.25 MWh BESS container integrates batteries, PCS and EMS in a 20 ft enclosure, with 1,720 kW rated AC output at 690 V.

PV and Diesel Microgrids

For remote or weak-grid sites, the 1.2 MWh microgrid ESS combines 500 kW AC output with PV input options and project-based generator coordination.

 

Compare Containerized BESS Models and Configurations

 
Product Series Rated Battery Energy PCS / AC Power Battery Cooling Configuration
6.25 MWh BESS Container 6.25 MWh 1,720 kW (4 × 430 kW) Liquid cooling Integrated battery, PCS and EMS; 690 V grid-connected output
3.85–5 MWh On-Grid BESS 3,858.43 / 4,244.27 / 5,015.96 kWh 1,900 / 2,100 / 2,500 kW, respectively Liquid cooling Battery container with separate inverter and transformer unit; 10–35 kV MV output
1.2 MWh Microgrid ESS 1,205.76 kWh 500 kW Air cooling 400 V microgrid configuration with 600 / 660 / 720 kW PV input options
1.2–2.89 MWh On-Grid BESS 1,205.76–2,893.82 kWh 625–1,500 kW, depending on configuration Liquid cooling 400 V grid-connected configurations
2 MWh Containerized ESS — CESS2 2.15 MWh rated energy 250 kW Air cooling Integrated LFP batteries, PCS, EMS and fire protection; 380 / 400 V AC output
4.6 MWh Containerized BESS — CBESS4600 4.597 MWh rated energy 2,500 kW  Liquid cooling Separate battery container and PCS cabin

Rated battery energy is different from usable AC energy delivered to the load. Specify required discharge power and operating hours together; SOC limits, conversion losses, auxiliary consumption and degradation allowance affect final sizing.

 

 

Integrated BESS or Separate Battery and PCS Containers

 

AC/DC Integrated Container

Choose the 6.25 MWh platform when battery storage and PCS need to share one enclosure. Its 690 V AC output still requires project-specific switchgear and, where needed, a step-up transformer for medium-voltage connection.

Separate Power Conversion

Use a battery container with a separate power block when PCS power, transformer rating or MV output needs to be arranged independently. Polinovel PCS and transformer containers cover centralized and string configurations.

Battery Supply for an Existing PCS

If your EPC team already specifies the power conversion system, use a DC-side battery storage container. Match the battery voltage window, charge/discharge current, cluster arrangement, protection and BMS interface with the selected PCS.

PV and Diesel Hybrid Control

For generator-based power, align ESS dispatch with generator loading, battery SOC and start/stop logic. ComAp-integrated battery and diesel systems support project-based communication mapping and control coordination.

 

 

 

Match the BESS to the Load and Operating Mode

 

Select PCS output, usable energy and controls around the way your site operates.

 

Industrial Peak Shaving

Size discharge power against the peak to be reduced and energy against its duration. For factories and industrial parks, commercial and industrial storage solutions combine tariff-based scheduling with site load management.

Solar, Wind and Grid Storage

Use generation profiles, export limits and dispatch schedules to select the battery and power block. Utility-scale BESS plant solutions address renewable integration and grid-connected deployment across multiple containers.

Remote PV Microgrids

The 1.2 MWh Microgrid ESS delivers 500 kW AC output, with 600 / 660 / 720 kW PV input options. For remote sites, match battery capacity to overnight loads and coordinate PV generation, motor starting and diesel generator operation.

Critical-Load Backup

Specify critical-load kW, backup hours and acceptable transfer time. Backup supply requires an off-grid-capable PCS, isolation, switching and protection; ordinary grid-connected operation alone does not supply loads during a grid outage.

 

 

Site Conditions, Cooling and Protection

 
 
 
 

Ambient Temperature and Duty

The 6.25 MWh system lists a -30°C to +50°C operating range. The 3.85–5 MWh series lists -20°C to +55°C, with derating above +45°C. Check output at your site's design temperature.

 
 

Battery and PCS Protection

Enclosure ratings apply to individual assemblies. For the 6.25 MWh model, the container is IP55 and the PCS is IP66. Match corrosion protection, altitude and ventilation requirements to the selected configuration.

 
 

 

Fire and Shutdown Interfaces

Coordinate battery monitoring, fire detection, suppression, emergency stop and site alarms. Define the required functions and destination-market documents for the exact battery, PCS and system configuration being purchased.

 
 

Lifting, Layout and Maintenance

Allow for shipping weight, crane access, foundation loading, cable routes and service clearances. A separate battery and PCS cabin arrangement needs space and access for both units, as well as the connecting power and communication cables.

 

 

OEM/ODM Configuration, Factory Testing and Delivery

 
01

Project configuration: define power, energy, discharge duration, voltage, grid frequency and operating modes from your load profile, renewable generation and site conditions.

 
02

OEM/ODM scope: agree layout, cooling, cable interfaces, communication, labels and documentation. Capacity and voltage options follow the selected battery platform and PCS arrangement.

 
03

Manufacture and factory acceptance: assemble the confirmed system and complete the agreed inspections and FAT. Define acceptance criteria, inspection items and required test records before production.

 
04

Delivery preparation: organize applicable drawings, manuals, test records, packing documents and site interface information for installation and commissioning planning.

 

 

 

BESS Technical Documents and Project Quotation

 

Datasheets and Design References

The technical download center lists containerized BESS material and a CBESS4600 design reference. Request current model-specific drawings and documents for your selected configuration.

Equipment Scope and Price

A BESS container quotation depends on battery energy, PCS power, transformer and switchgear scope, cooling, control integration and delivery terms. Compare the complete supply list alongside the price.

Send Electrical Requirements

Provide target MW and MWh, required operating hours, grid voltage and frequency, load profile, existing PV or generators, and EMS or SCADA interface requirements.

Send Site and Delivery Requirements

Include the installation country, ambient conditions, altitude, available space, required standards and documents, delivery terms and target schedule for the project proposal.

Request a Containerized BESS Proposal

 

 

 

 

We are one of the most professional containerized BESS manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to wholesale high-grade containerized BESS made in China here from our factory.

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Smarter Energy, Stronger Operations.

Polinovel delivers high-performance energy storage solutions to strengthen your operations against power disruptions, lower electricity costs through intelligent peak management, and deliver sustainable, future-ready power.