3132KWH-1500KW Solution (Taiwan)
Project Description
This project delivers a 3.132MWh / 1.5MW grid-connected battery energy storage system (BESS) installed in Taiwan, designed for industrial and commercial facilities requiring high-reliability power supply with seamless backup capability.
The system comprises six (6) TAODYAN 522kWh / 250kW liquid-cooled BESS units, integrated through a dedicated combiner cabinet equipped with an embedded ESTS (Energy Storage Transfer Switch) uninterruptible power supply module. This architecture enables ultra-fast switching from grid power to battery backup within 20 milliseconds — ensuring zero-downtime protection for critical loads.
Total Energy Capacity
Total Output Power
BESS Cabinets
Grid-to-Battery Transfer
Cell Chemistry
Protection Rating
⚡ Key Innovation: Integrated Combiner Cabinet with UPS
Unlike conventional BESS deployments that require separate ATS/UPS equipment, this solution features a purpose-built combiner cabinet (汇流柜) that aggregates all six battery strings while housing an integrated ESTS transfer switch module. The ESTS provides dual 500kW ports (load side & grid side) at 400V AC, enabling instantaneous (<20ms) failover when grid anomalies are detected — faster than standard UPS systems and without the need for additional inverter synchronization.
- Grid-Tied Operation: Six 250kW inverters operate in parallel, feeding up to 1.5MW into the facility’s 400V bus for peak shaving, load shifting, and demand charge management.
- Seamless Backup: Upon grid failure or voltage excursion, the ESTS transfer switch isolates the grid and connects battery output to critical loads within 20ms — well within IT equipment ride-through tolerance.
- Liquid-Cooled LFP Battery: Each 522kWh unit uses 314Ah LFP cells in a 2P260S configuration (832V nominal), liquid-cooled for consistent thermal performance in Taiwan’s subtropical climate (-25°C to 55°C operating range).
- Outdoor Installation: IP54-rated cabinets installed outdoors on concrete plinth, minimizing HVAC space requirements and reducing civil works cost.
- Scalable Architecture: Modular design allows future expansion by adding more 522kWh/250kW units and extending the combiner cabinet.
Project Images
Battery System Specifications
| Battery Pack Parameters (per 522kWh Unit) | |
|---|---|
| Cell Type | LFP – 314Ah Prismatic |
| Total Capacity (per unit) | 522 kWh |
| Total Capacity (system) | 3,132 kWh (6 × 522kWh) |
| Battery Configuration | 2P260S |
| Nominal Voltage | 832 V DC |
| Voltage Range | 748V – 915V DC |
| Operating Temperature | -25°C to 55°C |
| Cooling Method | Liquid Cooling |
| Cycle Life | ≥ 8,000 cycles @ 80% DOD |
| Protection Rating | IP54 |
| Max Altitude | ≤ 4,000m |
| Dimensions (W×D×H) | 1,850 × 1,350 × 2,200 mm |
| Weight (per unit) | 4.5 Tonnes |
| Battery Module Specifications | |
| Module Capacity | 52.25 kWh |
| Module Configuration | 1P52S |
| Nominal Voltage | 166.4 V DC |
| Cell Capacity | 314 Ah |
| Module Dimensions | 770 × 1,130 × 245 mm |
| Module Weight | 360 kg |
Inverter & PCS Specifications
| Inverter Parameters (per 250kW Unit) | |
|---|---|
| Inverter Type | Grid-Tied (On-Grid) |
| Rated Output Power | 250 kW |
| Maximum Output Power | 275 kW |
| System Rated Power (total) | 1,500 kW (6 × 250kW) |
| PCS Nominal Voltage | 400 V AC (3-phase) |
| Rated Frequency | 50 / 60 Hz |
| Power Factor | > 0.99 (at rated power) |
| Maximum Efficiency | > 98% |
| Cooling Method | Forced Air Cooling |
Combiner Cabinet & ESTS (UPS) Specifications
| ESTS Transfer Switch Module | |
|---|---|
| Load-Side Port Power | 500 kW |
| Grid-Side Port Power | 500 kW |
| Nominal Voltage | 400 V AC (3-phase) |
| Transfer Time | < 20 ms (grid → battery) |
| Switching Mode | Static Transfer Switch (STS) / Automatic |
| Protection Function | Over/Under voltage, frequency anomaly, phase loss detection |
| Combiner Cabinet Overview | |
| Aggregated Strings | 6 × 522kWh BESS inputs |
| Function | DC aggregation + AC distribution + ESTS transfer switch integration |
| Key Advantage | Eliminates need for separate ATS/UPS equipment; single-cabinet solution |