2MWh Containerized Battery Energy Storage System
The 2 MWh Containerized Solar Battery Storage System is a fully integrated energy solution that combines battery modules, PCS,EMS, and fire protection within a standard container. It provides safe, reliable, and efficient power for peak shaving, backup energy, microgrids, and renewable energy integration. With its modular and plug-and-play design, the system ensures quick deployment, easy operation, and long-term stability for commercial, industrial, and utility applications.
Optimized for Your Energy Needs
Extended Energy Availability
Provides 2 MWh of reliable power to keep operations running longer and support large-scale solar or industrial projects, reducing downtime and ensuring continuity.
Faster Project Deployment
Pre-assembled containerized design enables quick installation, cutting construction time and project costs while allowing your energy storage system to start delivering benefits sooner.
Smarter Energy Management
Integrates seamlessly with PV systems, microgrids, and utilities to optimize power flow, improve grid stability, and use energy efficiently, saving costs and enhancing reliability.
Guaranteed Operational Safety
Multi-layer protection with BMS, temperature regulation, and automatic fire suppression ensures safe, stable, and long-term operation, reducing maintenance needs and protecting your investment.
Specification
Battery Parameter
| Model | CESS2 | |
| Energy | 2.15MWH | |
| Configuration | 10 Clusters*768V 280Ah | |
| Rated Voltage | 768V | |
| Operating Voltage Range | 648~876Vdc (2.7~3.65V) | |
PCS Parameter
| DC Side | Voltage Range | 600~900Vdc |
| DC Channel | 5 | |
| Single Channel Rated Current | 85A | |
| AC On Grid Side | Output Line System | 3W+N+PE / 3W+PE |
| Rated Power | 250KW | |
| Rated Voltage | 380Vac / 400Vac | |
| Rated Frequency | 50Hz / 60Hz | |
| Voltage Range | -15%~+10% | |
| Rated Current | 100~200A | |
| Power Factor | 1 | |
| Output Hamonic | 0.03 | |
| AC Off Grid Side | Output Line System | 3W+N+PE / 3W+PE |
| Rated Power | 250KW | |
| Rated Voltage | 380Vac / 400Vac | |
| Rated Frequency | 50Hz / 60Hz | |
| Rated Current | 379A | |
| Voltage Accurace | 0.01 | |
| Output Voltage Hamonics | 3% (Linear Full Load) |
General Parameter
| Air Conditioning | Working Temperature | -20℃~55℃ (derating above 45℃) |
| Storage Temperature | -20℃~60℃ | |
| Relative Humidity | 0~95%(non-condensing) | |
| Working Altitude | 2000m @45℃ (Derating 2000~4000m) | |
| Noise | ≤70dB | |
| Other | Communication Method | RS485 / CAN |
| Isolation Method | Isolation Transformer | |
| IP Rating | IP54 | |
| Cooling Method | Air Cooling | |
| Max. Efficiency | 98.5% (excluding the isolation transformer) | |
| Fire Protection | HFC-ea | |
| Dimension (W*D*H) | 1296*2438*2591mm / 480.2*96*102in |
Key Benefits
The 2MWh Containerized Battery Energy Storage System delivers immediate value to your operations
Reduce Energy Costs
Cut demand charges by up to 40% through peak shaving and energy arbitrage between off-peak and peak hours.
Uninterrupted Operations
Maintain critical operations during grid failures with automatic switching in just 20 milliseconds.
Eliminate Diesel Generators
Replace costly, maintenance-intensive diesel generators with clean, quiet battery storage.
Optimize Renewable Energy
Store excess solar energy for peak hours, significantly boosting renewable utilization and reducing curtailment.
Generate Revenue
Unlock additional revenue through demand response programs by making your available capacity accessible to the grid.
Plug-and-Play Installation
Get up and running in just 5-7 business days with minimal site preparation required.
The Challenge of Grid Power
For commercial and industrial facilities, grid power has become a significant operational risk
Skyrocketing Peak Demand Charges
Peak demand charges occur mainly in the afternoon and early evening, when utility rates can increase sharply. For multi-shift manufacturing plants, a few hours of peak demand can account for a substantial portion of monthly electricity costs.
Critical Impact:
These charges can represent 30-50% of your total electricity bill, even though peak demand only occurs for a few hours each day.
Grid Instability and Outages
Aging infrastructure and extreme weather events are increasing the frequency of grid failures. Brownouts and blackouts can halt production lines for hours, leading to significant operational losses.
Critical Impact:
Unplanned downtime can result in major production and revenue disruption, and restarting operations may add further cost and complexity.
The Limitations of Traditional Solutions
Diesel Generators
High operating costs
Maintenance-intensive
Environmental and emissions concerns
Require fuel storage and handling
Less practical for frequent or continuous use
Renewable Energy Alone
Solar panels produce nothing after sunset (when energy costs are highest)
Wind power is intermittent and unpredictable
Without storage, excess energy must be sold back to the grid at wholesale rates
Still vulnerable to grid failures
The Intelligent Energy Storage Solution
Store low-cost power during off-peak hours and deploy it precisely when rates surge or the grid fails
2MWh Containerized Battery Energy Storage System (CESS2)
A complete energy management solution in one plug-and-play unit, designed specifically for commercial and industrial facilities with significant power demands.
Stores 2,150 kWh of energy
Delivers up to 250 kW of continuous power
Enough to run a medium-sized manufacturing facility through peak hours
Provides backup power for critical operations during outages
Perfect for: Facilities facing high monthly electricity costs, demand charges, grid reliability concerns, or renewable energy integration challenges.
25-40% Cost Reduction
Significantly reduce energy costs through peak shaving and energy arbitrage.
Eliminate Diesel Dependence
Replace costly and maintenance-intensive diesel generators.
Maintain Operations
Protect critical production during grid outages.
Generate Revenue
Earn income through demand response programs by making capacity available to the grid.
How It Works
1. Charge During Off-Peak
The system charges during off-peak hours when electricity costs are lowest, taking advantage of time-of-use pricing.
2. Discharge During Peak
When your facility's power demand rises above a preset threshold, the battery automatically discharges to avoid peak demand charges.
3. Backup Power
In case of grid failure, the system detects the outage in 20 milliseconds and switches to island mode automatically.
Built for Demanding Environments
The CESS2 integrates three critical components into a standard 20-foot container: battery storage, power conversion, and thermal management
Energy Capacity and Delivery
Battery Configuration
The 2.15 MWh capacity uses ten battery clusters rated at 768V and 280Ah each. This configuration delivers stable power output across the system's operating voltage range (648-876V DC), ensuring consistent performance whether the battery is at 20% or 95% charge.
Power Conversion System
The 250 kW power conversion system handles both grid-tied and off-grid operations with 98.5% efficiency, meaning minimal energy loss during charge-discharge cycles. The five DC channels provide redundancy-if one channel experiences issues, the system continues operating at 80% capacity rather than failing completely.
Environmental Durability
Temperature Range
Operating temperature range of -20°C to 55°C (-4°F to 131°F) covers most industrial environments without performance loss. Above 45°C (113°F), the system automatically derates to protect components while maintaining operation.
Environmental Protection
The IP54 rating means dust-resistant and protected against water splashing from any direction. The air cooling system maintains optimal operating temperatures without requiring water connections or complex cooling infrastructure.
Safety and Protection
Fire Suppression
The HFC-ea fire suppression system activates automatically if internal sensors detect thermal runaway or smoke. The system floods the container interior within 10 seconds, suppressing fire before it can propagate between battery clusters.
Electrical Safety
The isolation transformer provides galvanic separation between DC and AC circuits, preventing ground faults on either side from affecting the other. This configuration also reduces harmonic distortion to 3% under full load, well below the 5% threshold that causes issues with sensitive equipment.
Implementation: Faster Than You Think
Get up and running in days, not weeks, with our plug-and-play solution
Site Preparation
Requires a level concrete pad (13 feet by 25 feet), electrical conduit to your main switchboard, and communication cabling to your facility network. Most sites complete preparation in 2-3 days.
2-3 Days
Concrete pad installation
Electrical conduit routing
Communication cabling
Site safety preparation
Delivery & Positioning
The container ships fully assembled and tested. A crane sets it in position in just 2-3 hours, with no need for extensive on-site assembly.
2-3 Hours
Container delivery
Crane positioning
Final placement on pad
Initial safety inspection
Electrical Connections
Licensed electricians make the final connections to your facility's electrical system. This process typically takes one full day to complete.
1 Day
High-voltage connections
Control system integration
Safety system testing
Preliminary power checks
Commissioning & Training
Our commissioning technicians verify all systems are operating correctly and provide training for your team. The system is then ready to go live.
1 Day
System commissioning
Performance testing
Software configuration
Operator training
Is This Right for Your Operation?
Determine if the CESS2 system aligns with your facility's needs
Ideal Candidates
The system makes the most sense if your facility:
Face high monthly electricity costs with significant demand charges.
Operate in regions with time-of-use rates where peak costs are considerably higher than off-peak.
Require backup power for critical equipment or temperature-sensitive operations.
Have large-scale solar generation or plan to expand renewable capacity.
Experience grid reliability challenges or occasional outages that impact operations.
Less Ideal Candidates
The value proposition weakens if:
Your utility rates are low and stable with minimal demand charges
Your operations can tolerate interruptions without significant cost
Your power consumption patterns are relatively flat without significant peaks
You have access to low-cost, reliable backup power from other sources
Your facility has very limited available space for the container
Perfect For These Applications
The 2MWh containerized battery energy storage system delivers reliable, cost-effective power across diverse commercial, industrial, and utility-scale applications.
Industrial Parks
This containerized BESS for industrial parks reduces energy costs with intelligent peak shaving and demand management. Integrate solar and wind to boost self-consumption-cut demand charges by up to 40%. Learn more about C&I solutions
01
Data Centers
Protect critical IT infrastructure with 20ms backup switchover. This data center battery backup solution keeps servers, cooling, and network equipment powered without interruption-a cleaner, quieter UPS alternative for data centers. Explore data center solutions
02
Renewable Energy Integration
This solar + container battery storage system captures surplus PV and wind generation, dispatching power when needed most. Maximize renewable utilization with seamless PV integration BESS technology-reduce curtailment and smooth intermittent output. View utility-scale solutions
03
Microgrid & Off-Grid Sites
This off-grid containerized BESS delivers independent power for remote facilities or islands with unreliable grid access. Grid-forming capability makes it an ideal microgrid battery storage solution-reducing diesel dependence and enhancing energy security. Explore microgrid solutions
04
EV Charging Stations
This BESS for EV charging stations supports high-power charging during peak periods without grid overload. Enable battery storage EV charging integration to buffer demand spikes, smart load distribution, and uninterrupted service during outages. See EV charging solutions
05
Similar Projects We've Delivered
See how Polinovel LiFePO4 containerized BESS performs in real-world deployments at comparable scales across 80+ countries.
4 MWh Containerized ESS - Renewable Integration
Deployed for solar + storage container integration at a large-scale PV plant. The system stores daytime excess and dispatches power during evening peak hours, maximizing renewable utilization. Key result: Increased self-consumption by 35%.
5 MWh Containerized ESS - Microgrid Support
Installed as a containerized BESS for microgrid with unreliable utility supply. The system operates seamlessly in both grid-tied and island modes, ensuring continuous power for critical manufacturing. Key result: Eliminated unplanned downtime.
20 MWh Containerized ESS - Grid Stability
A utility-scale deployment supporting frequency regulation and grid stability services. Multiple 20ft container energy storage units operate in parallel for rapid response. Key result: New revenue from ancillary market participation.
Frequently Asked Questions
Q: What site preparation is needed for the 2MWh container?
A: This plug and play BESS container requires a level concrete pad (approximately 13ft × 25ft), electrical conduit routed to your main switchboard, and communication cabling. Most sites complete preparation in 2-3 days. The 20ft container energy storage system ships fully assembled and tested-a crane sets it in position in just 2-3 hours for fast deployment battery storage.
Q: How does the system perform in extreme temperatures?
A: This air-cooled containerized battery storage operates reliably from -20°C to 55°C (-4°F to 131°F). Above 45°C, the system automatically derates to protect components while maintaining operation. The IP54 outdoor battery container design and integrated cooling maintain optimal temperatures without water connections or complex infrastructure.
Q: What happens if one battery cluster or DC channel fails?
A: This 2MWh LiFePO4 container battery is designed with built-in redundancy. With 10 battery clusters and 5 DC channels, a single component failure doesn't bring down the entire system. The 768V commercial battery storage continues operating at approximately 80% capacity-keeping your operations running while maintenance is scheduled.
Q: How fast can the system switch to backup mode during a grid outage?
A: The 2MWh battery storage system detects grid failures and switches to island mode in just 20 milliseconds. This near-instantaneous response means critical equipment-servers, production lines, refrigeration-continues operating without interruption, making it an ideal commercial building battery backup solution.
Q: Is 2MWh the right size for my facility?
A: This 2MWh containerized battery energy storage is ideal for medium-sized commercial and industrial facilities with significant demand charges, peak loads reducible through 2-4 hours of discharge, critical backup needs, or on-site solar generation. For larger facilities or utility-scale projects, consider our 4.6 MWh Containerized BESS with liquid cooling for higher power density.
Q: Why choose LiFePO4 chemistry for containerized BESS?
A: LiFePO4 containerized BESS offers distinct advantages over NMC alternatives: superior safety with lower thermal runaway risk, longer lifespan of 4,000-6,000 cycles (10-15 years), better high-temperature performance, and lower lifetime cost.
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