All in One BESS | Power: 50kW | Energy: 120.57kWh | Outdoor / Indoor
An energy storage system 50kW is a commercial-scale solution. It is designed to store excess solar energy. It releases this energy during peak demand periods. GRANKIA BESS-50-120K integrates a 50kW hybrid inverter with a 120kWh LiFePO4 battery. This integration enables businesses to reduce electricity costs through solar peak shaving and energy optimization.
This system stores excess photovoltaic generation during the day. It discharges the stored energy during high-demand periods. This ensures that your facility operates at peak efficiency. It also significantly reduces electricity costs.
Unlike generic storage units, the 50kW battery storage system is engineered for mid-sized commercial buildings. It is ideal for EV charging hubs and manufacturing facilities. These facilities seek reliable peak shaving and load shifting.

With a nominal capacity of approximately 120kWh, this unit offers extended backup duration. It has significant load-shifting capabilities. This ensures operations continue smoothly even when solar generation is low.
Utilizing intelligent algorithms, the system automatically detects peak tariff windows. It discharges stored energy to offset grid usage, effectively executing solar peak shaving to minimize demand charges and time-of-use costs.
Designed as hybrid inverter system, it manages the flow of energy between solar panels, the battery, and the grid. This system operates simultaneously, maximizing self-consumption of renewable energy.
The cabinet design allows for flexible deployment. Multiple units can be connected in parallel. This configuration creates a high-capacity energy storage farm. It can scale up to megawatt-hour levels for larger industrial complexes.
An integrated BMS ensures safety and longevity by monitoring cell voltage, temperature, and state of charge (SOC) in real-time. It prevents overcharging and optimizes the lifecycle of the LiFePO4 battery cells.
In the event of a utility failure, the system switches to island mode within milliseconds. It provides a reliable grid-independent power supply to critical loads without interruption.
Users can access a cloud-based monitoring platform to track energy flows, system health, and savings data remotely. This access facilitates data-driven demand charge reduction strategies.
| Parameter | Specification |
|---|---|
| Model | BESS-50-120K |
| System Type | All-in-One Solar Storage |
| Energy Capacity | 120kWh |
| Rated Power | 50kW |
| Inverter Type | Hybrid (Grid-tied/Off-grid capable) |
| Cooling System | Smart Air Cooling |
| Communication | CAN/RS485/Ethernet |
| Installation | Outdoor / Indoor |


Peak shaving means reducing electricity consumption from the grid during expensive demand periods. Here’s how this energy storage system 50kW works:
Solar Charging: During low-tariff hours (e.g., 9 AM – 2 PM), the system stores excess solar generation.
Smart Discharge: When utility rates peak (e.g., 4 PM – 9 PM), the BESS-50-120K automatically discharges stored solar energy to power your facility.
Demand Limit: It never draws more than a preset grid limit, eliminating demand spikes.
Grid Backup: If grid fails, the system island-mode powers critical loads.
Reduce peak demand charges by 30–50%. The BESS-50-120K’s predictive algorithm learns your load profile and solar generation to optimize discharge cycles automatically.
Unlike small residential units, this is commercial solar battery storage built for daily heavy cycling. The LFP chemistry provides fire-safe, long-life operation with a 10-year warranty.
It doubles as an uninterruptible power supply (UPS). During outages, the BESS-50-120K provides seamless backup, protecting operations from revenue loss.
The BESS-50-100K is versatile, fitting perfectly into various sectors where a reliable solar battery storage system is critical.
Ensure continuous operation during outages with a reliable solar battery storage system for office buildings backup power.
Prevent revenue loss caused by unexpected power failures.
Maintain production stability with a solar power backup system for small factories with unstable grid supply.
Deploy as a hybrid solar battery storage system for off-grid commercial applications.
Reduce electricity bills by storing energy during off-peak hours and using it during peak demand.
An energy storage system 50kW stores solar energy. It releases this energy during peak demand. This process helps reduce electricity costs and improve energy efficiency.
Solar peak shaving stores excess solar energy during the day and uses it during high-tariff periods, reducing peak demand charges from the grid.
Yes—50kW energy storage system is modular and can be paralleled to scale power and energy for larger sites.
Yes, it can operate with grid or generator input, but it performs best when integrated into a solar power backup system.
Yes—optional backup mode can supply selected critical loads with seamless transfer.
Don’t wait for the next blackout.
Looking for a reliable solar battery storage system for your business?
Contact us today to get a customized solution based on your energy needs and start achieving energy independence with the BESS-50-120K.
| MODEL | BESS-50-120K |
| Battery Parameters | |
| Battery Type | LiFePO4 Lithium Iron Phosphate |
| Cell Capacity | 3.2V 314Ah |
| Cell Combination | 20S1P |
| Number of battery packs | 6 |
| Battery Group Method | 120S1P |
| Rated Energy | 120.57kWh |
| Rated Voltage | 384VDC |
| Voltage range | 336~432VDC |
| Rated Charge / Discharge Current | 100A |
| Max. Continous Charge / Discharge Current | 140A |
| Cycle Life | ≥8,000 cycles (at 25℃, 0.5C, 80% DoD) |
| PV Parameters | |
| Max. PV Input Power | 96KW |
| Rate Input Voltage | 600VDC |
| Max. Input Voltage | 1000VDC |
| MPPT Voltage Range | 150VDC – 850VDC |
| PV Input Current | 40A * 4 |
| AC Side Parameters | |
| Rated Output Power | 50KW |
| Rated Voltage | 3L/N/PE; 380VAC/400VAC/415VAC |
| Rated Frequency | 50Hz / 60Hz |
| Rated Current | 76A |
| Overload Capacity | 110% |
| THDi | ≤3% |
| Power Factor | 0.8 leading to 0.8 lagging |
| Isolation Method | Non-isolated |
| System Parameters | |
| Energy Efficiency | ≥ 96% |
| Operation Modes | Grid-tied / Off-grid / Hybrid |
| Expansion | Support in Parallel |
| Protection Level | IP55 |
| Cooling | Intelligent Air Cooling |
| Operation Temperature | Charging: 0~50℃, Discharging: -20~50℃ (>45℃ derating) |
| Humidity | 10%~95% RH (no condensation) |
| Altitude | <2000m (derating above 2000m) |
| Communication Port | CAN, RS485, WiFi, TCP/IP |
| Physical | |
| Dimension (WxDxH) | 750x1200x2095mm |
| Weight | Approx. 1410 Kg |