BESS | 125kW PCS | 241.15kWh Enery Storage | DC Voltage: 768VDC | IP55
In an era of rising energy costs and grid instability, businesses need reliable solutions to manage power consumption efficiently. GRANKIA BESS-125-241K stands out as a premier 125kW commercial battery backup system, specifically engineered for industrial and commercial applications. You may want to reduce demand charges through peak shaving.
Alternatively, you could ensure business continuity during outages. This all-in-one energy storage system delivers performance, safety, and intelligence in a single compact unit.

A 125kW commercial battery backup is an advanced energy storage system. It is designed to help businesses reduce electricity costs and improve energy efficiency, also ensures a reliable power supply. The BESS-125-241K is specifically engineered for peak shaving. It enables commercial and industrial users to lower demand charges, and optimizes energy usage.
With a rated output of 125kW and a usable energy capacity of 241kWh, it is an ideal solution for businesses. These businesses can look to reduce demand charges through peak shaving. At the same time, they can maintain 24/7 operational resilience.
The system intelligently discharges stored energy during peak tariff hours. By lowering your peak demand from the grid, you significantly reduce monthly electricity bills and demand charges.
It acts as a robust 125kW commercial battery backup. It seamlessly switches to off-grid mode during power outages in less than 20ms. This keeps critical loads running without interruption.
Safety is paramount. The unit features a multi-level protection system. It includes LFP (LiFePO4) chemistry and active cell balancing. It also has integrated fire suppression (aerosol or perfluorohexanone) to prevent thermal runaway.
The built-in Energy Management System (EMS) allows for remote monitoring via cloud platforms or mobile apps. You can visualize real-time data, set charging strategies, and perform remote firmware updates.
Businesses often face high utility bills not just from total energy consumption. They incur fees based on the highest amount of power used during a billing cycle. These fees are known as demand charges. This is where peak shaving becomes critical.
Using a 125kW commercial battery backup like the BESS-125-241K, the system automatically discharges. This occurs during short periods of high energy usage (peaks). By “shaving” these peaks off your grid consumption, the system:
Reduces Demand Charges: Lowers the maximum kW demand recorded by the utility meter.
Lowers Energy Costs: Discharges during high Time-of-Use (TOU) rates and charges during off-peak hours.
Extends Equipment Life: Reduces stress on existing electrical infrastructure by smoothing out load spikes.
| Specification | Details |
|---|---|
| System Type | Commercial & Industrial (C&I) Energy Storage |
| Rated Power | 125 kW |
| Energy Capacity | 241.15 kWh |
| Battery Technology | LiFePO₄ (LFP) – Safe, Long Cycle Life |
| Voltage Range | 728V – 936V DC |
| Round-trip Efficiency | ≥ 92% |
| Cooling Method | Intelligent Air Cooling |
| Protection Rating | IP55 (Suitable for harsh factory environments) |
| Communication | CAN, RS485, Ethernet |
Peak shaving is one of the most valuable applications of the BESS-125-241K.
This 125kW commercial battery backup is versatile enough to serve a wide range of sectors:
Manufacturing Facilities: Smooth out heavy machinery start-up spikes.
EV Charging Stations: Buffer grid capacity to avoid demand spikes from fast chargers.
Office Buildings: Shift HVAC and lighting loads to reduce peak demand.
Retail & Grocery: Protect refrigeration units and ensure business continuity during outages.
Healthcare Clinics: Provide reliable backup power for life-safety equipment without diesel generator noise or emissions.
Yes, it functions as a hybrid system. It can operate in off-grid mode to provide backup power. It can also serve as a primary source for isolated loads. This is possible if the battery has sufficient charge.
Absolutely. The BESS-125-241K can be integrated into existing PV systems. It stores excess solar generation for use during the evening or cloudy days. This maximizes self-consumption.
The BESS-125-241K is pre-assembled and factory-tested. Typical installation time ranges from 1 to 3 days, depending on site electrical infrastructure and permitting.
The commercial battery backup system detects grid failure within milliseconds and seamlessly transitions to island mode. It continues supplying power to critical loads while peak shaving operations pause temporarily. When grid power is restored, the system automatically resynchronizes and resumes normal peak shaving functions without interruption.
Businesses typically save 20% to 50% on electricity costs, depending on energy usage and tariff structures.
The BESS-100-261K 100kW commercial battery system combines durability, intelligence, and scalability for real-world energy challenges. Whether you’re reducing operational costs or building a resilient microgrid, this system delivers performance you can count on—rain or shine.
| MODEL | BESS-125-241K |
| Battery Parameters | |
| Battery Type | LiFePO4 Lithium Iron Phosphate |
| Cell Capacity | 3.2V 314Ah |
| Cell Combination | 20S1P |
| Number of battery packs | 12 |
| Battery Group Method | 240S1P |
| Rated Energy | 241.15kWh |
| Rated Voltage | 768VDC |
| Voltage range | 672~864VDC |
| Rated Charge / Discharge Current | 140A |
| Max. Continous Charge / Discharge Current | 157A |
| Cycle Life | ≥8,000 cycles (at 25℃, 0.5C, 80% DoD) |
| PV Parameters | |
| Max. PV Input Power | 100KW (50KW * 2) |
| High Voltage Side Voltage | 560VDC – 1000VDC |
| High Voltage Side Current | 160A |
| Low Voltage Side Voltage | 500VDC – 900VDC |
| Low Voltage Side Current | 200A |
| AC Side Parameters | |
| Rated Input Power | 125KW |
| Rated Output Power | 125KW |
| Rated Voltage | 3L/N/PE; 380VAC/400VAC/415VAC |
| Voltage Range | 320VAC – 460VAC |
| Rated Frequency | 50Hz / 60Hz |
| Frequency Range | 45Hz-55Hz / 55Hz-65Hz |
| Rated Current | 180A |
| Overload Capacity | 110% |
| THDi | ≤3% |
| Power Factor | 0.8 leading to 0.8 lagging |
| Isolation Method | Non-isolated |
| Uninterrupted Load (STS) – Optional | |
| STS Power | 200KW |
| STS Voltage | 3L/N/PE; 380VAC/400VAC/415VAC |
| Overload Capacity | 110% |
| Transfer Time | < 20ms |
| System Parameters | |
| Energy Efficiency | ≥ 90% |
| Operation Modes | Grid-tied / Off-grid |
| Expansion | Support in Parallel |
| Protection Level | IP55 |
| Cooling | Intelligent Air Cooling |
| Noise | ≤ 65dB |
| Fire Protection | Aerosol |
| Operation Temperature | -20~55℃ |
| Humidity | 0%~95% RH (no condensation) |
| Altitude | <2000m (derating above 2000m) |
| Communication Port | CAN, RS485, WiFi, TCP/IP |
| Dimension (WxDxH) | 1110x2050x1745mm |
| Weight | Approx. 2.4 – 2.6Tons |