522KWh-250KW Malaysia Solution
Project Description
This project delivers a 522 kWh / 250 kW hybrid (on-grid) energy storage system deployed in Malaysia, built around two (2) units of TAOYAN’s advanced liquid-cooled lithium iron phosphate (LFP) all-in-one storage systems (M125G261A model — 261 kWh / 125 kW per unit). The system is engineered for complete energy independence from the grid: solar photovoltaic (PV) panels generate power during daylight hours to simultaneously supply the facility load and charge the battery storage; at night, the stored energy is discharged to cover the entire facility demand — achieving zero grid electricity consumption.
Each storage unit integrates a high-capacity LFP battery bank (261 kWh, 832V DC nominal) with a 125 kW hybrid inverter (130 kW peak) featuring built-in MPPT for direct PV coupling. The liquid cooling system maintains optimal cell temperatures across a wide -25°C to 55°C operating range, delivering superior cycle life (≥8000 cycles at 80% DOD) and round-trip efficiency compared to air-cooled alternatives. The compact cabinet design (1350 × 1350 × 2200 mm per unit, ~2 tonnes each) enables fast outdoor deployment on concrete plinths with minimal site preparation.
Total Energy Capacity
Total Rated Power
M125G261A Systems
PCS Efficiency
Cell Chemistry
Protection Rating
🔌 Key Innovation: Hybrid PV + Storage for Zero-Grid Operation
This solution achieves complete grid independence through intelligent solar self-consumption plus nighttime battery discharge. Each M125G261A unit combines a 261 kWh liquid-cooled LFP battery cluster (1P260S configuration, 832V nominal) with a 125 kW hybrid PCS that includes integrated MPPT controllers for direct PV array connection — no separate solar inverter required. During sunny hours, excess PV power charges the batteries while simultaneously supplying the factory load; after sunset, the batteries take over 100% of the load. The result: zero kilowatt-hours drawn from the utility grid, dramatically reducing or eliminating electricity costs while providing backup power capability during grid outages.
- Liquid-Cooled LFP Battery System: Two clusters of 261 kWh each (522 kWh total) using 3.2V / 314Ah prismatic LFP cells in 1P260S configuration. Integrated die-cast liquid cooling plates maintain cell temperature within optimal range. Cycle life ≥8000 cycles at 80% DOD. Nominal voltage 832V DC, range 748–915V DC.
- Hybrid Inverter with Built-in MPPT: Two × 125kW hybrid PCS (rated) / 130kW (maximum) output per unit. Direct PV coupling via integrated MPPT (max input 1000V, MPPT range 250–850V). AC output 400V 3-phase, 50/60Hz. Four-quadrant control, power factor >0.99, THD <3%.
- Zero-Grid Operating Mode: Daytime: PV powers load + charges batteries simultaneously. Nighttime: Batteries discharge to cover 100% of facility load. Optional grid connection as backup only. Peak shaving and load shifting capabilities included.
- Advanced Thermal Management: Liquid cooling system with integrated cold plate design eliminates hot spots and extends battery life. PTC heating enables reliable operation down to -25°C. Suitable for Malaysia’s tropical climate with enhanced heat rejection.
- Compact Cabinet Deployment: Each unit measures 1350 × 1350 × 2200 mm and weighs approximately 2 tonnes. Outdoor-rated IP54 cabinet design requires only a concrete plinth and electrical connections. Rapid deployment — typical installation within 2–3 days.
- Integrated Safety Systems: Multi-level BMS (BMU/BCMU/BAMS), over/under voltage/current/temperature protection, emergency stop, smoke detection, and fault alarm integration with EMS platform.
Project Images
Battery System Specifications
| Battery Pack Parameters (Per Unit × 2) | |
|---|---|
| Cell Type | LFP – 314Ah Prismatic |
| Capacity Per Unit | 261 kWh |
| Total Capacity (2 Units) | 522 kWh |
| Battery Configuration | 1P260S (260 cells in series, 1 parallel) |
| Nominal Voltage | 832 V DC |
| Voltage Range | 748 V – 915 V DC |
| Operating Temperature | -25°C to 55°C |
| Cooling Method | Liquid-Cooled (Integrated Die-Cast Cold Plate) |
| Cycle Life | ≥ 8,000 cycles @ 80% DOD |
| Protection Rating | IP54 |
| Max Altitude | ≤ 4,000 m |
| Dimensions (W×D×H) Per Unit | 1,350 × 1,350 × 2,200 mm |
| Weight Per Unit | ≈ 2 Tonnes |
| Battery Module Specifications | |
| Module Capacity | 52.25 kWh |
| Module Configuration | 1P52S (52 cells in series, 1 parallel) |
| Nominal Voltage | 166.4 V DC |
| Cell Capacity | 314 Ah |
| Module Dimensions (W×D×H) | 770 × 1,130 × 245 mm |
| Module Weight | 340 kg |
Inverter & PCS Specifications (Per Unit × 2)
| PCS Parameters (Hybrid On-Grid with MPPT) | |
|---|---|
| Inverter Type | Hybrid (On-Grid with Integrated MPPT) |
| Rated Output Power (per unit) | 125 kW |
| Maximum Output Power (per unit) | 130 kW |
| Total System Power (2 units) | 250 kW (rated) / 260 kW (max) |
| DC Voltage Range | 650 V – 950 V DC |
| Maximum PV Input Voltage | 1,000 V DC |
| MPPT Operating Voltage Range | 250 V – 850 V DC |
| MPPT Full Load Voltage Range | 450 V – 850 V DC |
| AC Rated Voltage | 400 V AC (3-phase 4-wire) |
| Grid Voltage Range | 320 V – 450 V AC |
| Rated Frequency | 50 / 60 Hz |
| Power Factor | > 0.99 (at rated power) |
| Power Factor Range | -1 (leading) ~ 1 (lagging) |
| Total Harmonic Distortion | < 3% (at rated power) |
| Maximum Efficiency | 98% |
| Cooling Method | Forced Fan Cooling |
| Noise Level | < 70 dB |
System Overview & Safety
| System Configuration Summary | |
|---|---|
| Project Location | Malaysia |
| Number of Units | 2 × M125G261A All-in-One Systems |
| Total Energy Capacity | 522 kWh (261 kWh × 2) |
| Total Power Capacity | 250 kW rated / 260 kW maximum (125 kW × 2) |
| Operating Mode | Hybrid PV + Storage (Zero-Grid Target) |
| Daytime Strategy | PV Self-Consumption + Battery Charging |
| Nighttime Strategy | Battery Discharge (100% Load Coverage) |
| Grid Connection | On-Grid (Backup Only) |
| Total Footprint | ~3.6 m² (2 cabinets side-by-side) |
| Total Weight | ≈ 4 Tonnes |
| Safety & Protection | |
| BMS Architecture | 3-Level: BMU (module) → BCMU (cluster) → BAMS (array) |
| SOC Estimation Accuracy | ≤ 5% |
| Protection Features | Over/under voltage, current, temperature; short circuit; reverse polarity |
| Cabinet Protection | IP54 |
| Emergency Stop | Front-panel E-stop button (red) with status indicators |
| Communication | CAN bus + RS485 + Ethernet |
TAOYAN Energy Management System (EMS)
This project is equipped with TAOYAN’s self-developed Energy Management System (EMS) — a comprehensive monitoring, control, and revenue optimization platform designed specifically for industrial BESS deployments. The EMS provides real-time visibility into every aspect of the energy storage system, from individual cell-level data to grid-wide economic performance.
EMS Confluence Dashboard — Real-time system topology, unit status, revenue statistics & power curves
Core Capabilities
- System Topology Visualization: Interactive single-line diagram showing real-time power flow between Grid, Combiner, PhotoVoltaic, Battery Units, and Factory Load — with live voltage, current, and power readings at each node.
- PV Meter Monitoring: Dedicated PV meter interface with dual-channel active power charts (PV Meter vs Anti-reflux Meter), line chart visualization, and comprehensive real-time data panel including phase voltages, currents, frequency, power factor, and cumulative energy.
- PCS Power & SoC Tracking: 24-hour rolling charts for PCS output power and battery State of Charge, enabling operators to verify scheduling execution and identify anomalies across multiple battery units.
- Batch Control Panel: One-click operation mode switching between Manual Charge, Manual Discharge, All-weather Auto, and Scheduled modes — with immediate effect confirmation and work mode status display.
- Project Wiring Diagram: Auto-generated single-line diagram showing actual field topology — Grid, PhotoVoltaic array, Combiner, and Load interconnections with live voltage/power readings.
- Profit Details & Revenue Analytics: Daily/monthly/yearly income tracking broken down by tariff period (Sharp / Peak / Flat / Valley) with charge/discharge kWh accounting, exportable PDF reports, and price-based income recalculation.
PV Meter interface — dual-channel power charts, real-time phase data & cumulative energy
PCS Power curves, SoC tracking, batch control panel & real-time wiring diagram
Profit Details — daily charge/discharge comparison by tariff period with income reconciliation