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This 250KW / 530KWH hybrid energy storage system is a comprehensive solar-plus-storage solution designed for commercial and industrial applications. Integrating tier-1 brand 620W N-type bifacial solar panels (243kWp total), a 250kW MEG hybrid inverter, and 530kWh of LFP battery storage, the system delivers reliable, clean energy with intelligent grid interaction.
The system generates approximately 1,215 kWh per day, around 42,000 kWh per month, and approximately 492 MWh of electricity per year. The 530kWh battery stores excess solar energy and can support critical loads during grid outages with up to 2 hours of backup at full load.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Electricity (kWh) | 35,986 | 37,649 | 38,707 | 39,841 | 42,714 | 44,075 | 47,250 | 46,116 | 43,470 | 41,051 | 39,388 | 36,439 | 492,685 |
Each component in the system has been carefully selected to ensure optimal compatibility, maximum efficiency, and long-term reliability. The following table details the complete bill of materials for the 250KW / 530KWH hybrid system.
| Item | Product Model | Quantity | Description |
|---|---|---|---|
| PV Module | 620W Solar Panel | 392 | 14 pcs/string, 28 strings total, 243.04kWp |
| PV Combiner Box | 7 inputs 1 output | 4 | 4 inputs 1 output per box |
| Hybrid Inverter | MEG 250K | 1 | Power: 250kW, AC Voltage: 120V 60Hz |
| Lithium Battery | 563.2V 314AH (176.85kWh) | 3 | 11 pcs 51.2V 314AH per cluster, 3 clusters total for 530kWh |
| High Voltage Box | BMS | 3 | 1500V 100A per box |
| Battery Combiner Cabinet | Third-level BMS | 1 | 3 inputs 1 output |
| PV Cable | PV1-F 1×6mm² | 3,200 m | 1×6mm² DC cable |
| MC4 Connector | MC4 | 150 | 1000V 30A |
| Mounting System | Custom | 1 set | For 392 panels — roof or ground |
The MEG 250K hybrid inverter supports multiple intelligent operating modes, allowing the system to adapt to different tariff structures, load profiles, and grid conditions. Choose the mode that best fits your energy strategy.
PV + Grid + Battery Available
Grid + Battery (PV Offline)
PV + Battery + Grid Available
PV + Grid (No Battery)
PV + Battery (Grid Offline)
PV + Grid + Battery Available
Grid + Battery (PV Offline)
Every major component in the 250KW / 530KWH system is sourced from tier-1 manufacturers and selected for proven field performance. Below is a detailed breakdown of each core subsystem.
The system uses high-efficiency N-Type bifacial modules featuring SMBB (Super Multi Busbar) technology for better light trapping and current collection. With bifacial gain, module output increases 5–25%, significantly lowering LCOE and improving IRR.
The MEG 250K is a fully integrated hybrid inverter combining PV/MPPT modules, transformer, STS, and maintenance bypass in a single platform. It supports 100% unbalanced load and parallel connection of up to 4 units (extendable to 1,000kW).
The battery system consists of 3 clusters, each with 11 modules of 51.2V 314AH (176.85kWh per cluster). Total storage capacity is 530kWh. The self-designed BMS ensures safe, reliable operation with easy front-maintenance access.
Flexible mounting solutions are available for both roof and ground installations. Roof systems support tile/slate, corrugated sheet metal, trapezoidal sheet metal, and standing seam roofs. Ground systems support universal terrain with adjustable inclination (15°–30°) and raised elevation for splash water protection.
A high-performance data logger provides comprehensive system monitoring, collecting operational data from all units via Modbus RS485 and communicating with the server via internet. The local webserver enables easy on-site configuration, and the system supports export control with compatible meters.
Safety is engineered into every layer of the system. The battery enclosure is equipped with comprehensive fire detection, alarm, and suppression systems alongside precision climate control.
The following table projects the battery's AC output capacity over a 10-year service life, accounting for 1 cycle/day degradation and system efficiency losses.
| Year | Gross Capacity (kWh) | Degradation | AC Output Efficiency | AC Output Capacity (kWh) |
|---|---|---|---|---|
| Year 0 | 530 | 98.40% | 85.06% | 450.82 |
| Year 1 | 530 | 92.01% | 83.05% | 440.17 |
| Year 2 | 530 | 88.03% | 82.26% | 435.98 |
| Year 3 | 530 | 85.32% | 81.57% | 432.32 |
| Year 4 | 530 | 84.06% | 80.95% | 429.04 |
| Year 5 | 530 | 82.75% | 80.35% | 425.86 |
| Year 6 | 530 | 81.57% | 79.78% | 422.83 |
| Year 7 | 530 | 80.35% | 79.22% | 419.87 |
| Year 8 | 530 | 79.13% | 78.66% | 414.25 |
| Year 9 | 530 | 77.91% | 78.12% | 414.04 |
| Year 10 | 530 | 76.69% | 77.57% | 411.12 |
With a typical payback period of less than 3 years, this system represents a compelling investment. The combination of solar self-consumption, peak shaving, and potential revenue from excess energy sales to the grid delivers rapid returns and decades of savings.
Whether you're evaluating a single installation or planning a large-scale rollout, send us your enquiry and we'll respond within one business day with a tailored proposal. Ask about volume discounts on system packages.
