125KW 261KWH BESS Energy Storage System

High-Capacity Industrial-Grade Solar + Storage Solution for Large C&I Applications

Highlights

	Solar Panel 1. Using N-type 16-18BB solar cell, the power generation efficiency is 25.5% 2. Using fully automatic slicing process,100%guarantees that there are no gaps in solarcell. 3. Quality control:Cell efficiency /cell power sorting 4. 4times EL test 5. The automatic confluence welding processof cells is adopted to ensure no false welding 6.Fully automatic glue filling process toensure the service life of solar panels up to 30 years 7. Packed in wooden boxes to ensure the safe delivery of the goods
	On and off grid hybrid inverter 1.Perfect function: get the power to the grid,AC Grid Charger Build In 2. Protective Functions: Protection Against Over load, Short-Circuit, Over Heat, 3. Anti-isolated Island Efficiency,Polarity Joint-Reversed，5Years Warranty
	[Key Specifications] • Rated Power: 125KW • Battery Capacity: 261KWH (832V 314AH) • Battery Configuration: 52.4KWH × 5 modules • Cycle Life: >6000 cycles • Inverter: 125KW hybrid on/off-grid with built-in AC charger • Solar Panel: 196pcs 625W N-type TopCon (48V, 23% efficiency) • System Daily Output: 750KWH • Max Load Power: 125KW

Key Advantages

• High Energy Density: 261KWh in a single outdoor cabinet, maximizing power per footprint
• Ultra-long cycle life: >6000 cycles to 80% DOD, LFP chemistry with active balancing BMS
• Scalable: Support multi-cabinet parallel configuration for MWH+ capacity expansion
• Smart EMS: Automatic peak shaving, load shifting, and off-grid backup management
• Turnkey Solution: Pre-wired, pre-configured cabinet reduces on-site installation time by 60%

Application Scenarios

• Large Factories & Manufacturing: Reduce peak demand charges and ensure production continuity
• Industrial Parks: Centralized energy storage for park-wide load management and PV integration
• Data Center Backup: Critical UPS-grade backup power for mission-critical facilities
• Commercial Buildings: Peak shaving, TOU arbitrage, and emergency power for elevators & security
• Microgrid & Remote Sites: Island-mode operation for off-grid industrial and mining operations

FAQS

Q1: What is the warranty period for this 125KW 261KWH BESS system?

The battery modules come with a 10-year performance warranty (retaining 80%+ capacity). The PCS/inverter is covered by a 5-year standard warranty. Solar panels carry a 25-year linear power output warranty. The bracket system and cables carry a 10-year warranty. Full after-sales support and spare parts are available through our service network.

Q2: Can this system operate in off-grid (island) mode?

Yes. The 125KW PCS with isolation transformer supports both on-grid and off-grid operation with automatic switching. In off-grid mode, the system manages PV charging, battery discharging, and can handle generator input for hybrid operation.

Q3: How long does it take to fully charge the 261KWH battery?

With the 125KW PCS charging capability, a full charge from empty takes approximately 2.5 hours. With sufficient solar generation (122.5KW PV array), the system can achieve full charge in 2-3 hours under peak sun conditions.

Q4: What is the operating temperature range of the battery cabinet?

The cabinet is designed for -20°C to +55°C ambient temperature with built-in air conditioning maintaining optimal battery temperature (15-35°C). This ensures stable performance in extreme climates.

Q5: Is the system compatible with existing solar installations?

Yes. The PCS with integrated MPPT is compatible with most existing solar arrays. The system can be configured as a retro-fit solution to add battery storage to an existing grid-tied PV system.

Q6: What safety certifications does the system have?

The system is fully certified with CE, TUV. The cabinet includes A1 fireproof rock wool (50mm), fire fighting equipment, smoke detection, and Grade A+ LiFePO4 battery cells.

Q7: What is the total weight and dimensions of the cabinet?

The integrated outdoor cabinet measures approximately 1398(W) x 1405(D) x 2415(H) mm and weighs approximately 3,000 kg (including battery modules, PCS, and BMS). Forklift pockets and lifting rings are provided for transport and installation.

Q8: How is after-sales technical support provided?

We provide 24/7 online technical support via phone, email, and remote monitoring platform. On-site commissioning support is available. Spare parts are stocked at regional warehouses for quick dispatch. Remote firmware updates and system diagnostics are supported through the built-in IoT module.