Solar-Storage Integrated Outdoor ESS – 257kWh / 125kW with PV Input
The GCB-E257 is a fully integrated solar-storage outdoor energy storage system, combining battery storage, inverter, and PV input in a single cabinet for simplified installation and optimized energy management. With 257 kWh rated energy, 125 kW rated power, and an integrated PV input capable of accepting up to 120 kW of solar power across 2 MPPTs with 4 input strings, this system enables seamless solar self-consumption, peak shaving, and backup power applications.
Built with LFP-314Ah battery cells in a 1P256S configuration, the system delivers a rated voltage of 819.2 V and a cycle life of 6,000 cycles at 100% DOD (to 80% capacity retention). The IP54 enclosure with intelligent air cooling ensures reliable operation in outdoor environments, while aerosol fire protection adds an extra layer of safety. Grid-connected operation supports AC400V with a power factor range of -1 to 1 and current harmonic distortion below 3%. Communication is handled via TCP/IP for easy integration with energy management platforms.
With dimensions of 1845×1415×2381 mm and a weight of 2.6 tons, the GCB-E257 offers a compact, all-in-one solution for commercial and industrial users seeking to maximize renewable energy utilization with a single, weather-resistant system.
| Battery Type: | LFP-314Ah |
| Series-Parallel Configuration: | 1P256S |
| Rated Voltage (V): | 819.2 |
| Max Charge/Discharge Current (A): | 157 |
| Rated Capacity (KWh): | 257 |
| Operating Voltage Range (V): | 716.8~921.6 |
| Cycle Life: | 6000 cycles (100% charge/discharge, degrades to 80% capacity) |
| Grid-Connected | Off-Grid(Optional) |
| Rated Voltage (V): AC400V | Rated Voltage (V): |
| Voltage Range (V): -20%~15% | Voltage Range (V): |
| Rated Current (A): 181A | Rated Current (A): |
| Total Current Harmonic Distortion: <3% (more than 30% load) | Total Current Harmonic Distortion: <3%(resistive load) |
| Power Factor: -1~1 | Unbalance Degree: 100% |
| Frequency: 50Hz/47Hz~52Hz(60Hz/57Hz~62Hz) | Frequency: 50/60Hz |
| Max Accessible PV Power (kW): | 120 |
| Rated Voltage (V): | 600V |
| Startup Voltage (V): | 250V |
| MPPT Voltage Range (V): | 200V-850V |
| Max Input Current (A): | 50A+50A+50A+50A60A+60A+60A+60A |
| Max Short-Circuit Current (A): | 60A+60A+60A+60A |
| MPPT Quantity/Max String Count: | 2/4 |
| Dimensions (WDH) (mm | 1845•1415•2381 |
| Weight (t): | 2.6 |
| Operating Temperature Range: | 0~50°C |
| Max Operating Altitude (m): | ≤5000(derate at ≥2000m) |
| Protection Class: | IP54 |
| Cooling Method: | Intelligent Air Cooling |
| Fire Protection: | Aerosol |
| Communication Method: | TCP/IP |