Sungrow PowerKeeper ST050CF 50kWh C&I Storage System with SH125CX Hybrid Inverter
This pre-configured bundle combines the key Sungrow components required for a 50kWh commercial and industrial (C&I) storage system, including PowerKeeper battery modules, SH125CX inverter, and the primary accessory kit necessary for the standard system configuration. Additional items may be required depending on the final project design.
PowerKeeper is suitable for a wide range of sites, from small commercial buildings to large industrial facilities, while enabling precise capacity matching and reduced upfront investment.
What’s included
This pre-configured Sungrow PowerKeeper ST050CF 50kWh C&I storage bundle includes:
For full technical specifications, datasheets, dimensions, compatibility details, and installation requirements, please refer to the individual product pages for each component included in this bundle.
Note that this system can be expanded with additional components purchased separately or configured through one of our other pre-configured bundle options.
Technical Information Summary
Sungrow SH125CX Hybrid Inverter
- Rated power: 125 kW
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Charge / discharge power: 125 kW / 125 kW
- Battery voltage range: 129 V – 880 V
- Max. charge / discharge current: 200 A / 200 A
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Backup switchover time: <10 ms
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Protection rating: IP66
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Application: DC-coupled C&I storage, solar optimisation, and backup power
Sungrow PowerKeeper ST050CF Storage System
- Capacity: 49.9 kWh (12.48 kWh × 4 modules)
- Voltage Range: 129.6–175.2 V (per battery 32.4–43.8 V)
- Battery chemistry: LFP / LiFePO₄
- Charge / discharge rate: 0.5P
- Approx. battery charge / discharge power: 25.0 kW for the 50 kWh configuration
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Protection rating: IP66
- Dimensions (W x H x D): 800 x 1567 x 405 mm
Learn More About Sungrow PowerKeeper System
Proven Experience, Trusted Partner
With over 1,000 C&I energy storage projects deployed globally, including 200+ projects across Europe, Sungrow brings deep field experience and end-to-end service capabilities to every installation.
One System, Multiple Applications
PowerKeeper adapts seamlessly to diverse C&I scenarios:
- PV + ESS
- PV + ESS + EV charging
- Microgrid & backup
- Stand-alone C&I energy storage
- Off-grid and hybrid applications
0 Waste: Modular by Design
PowerKeeper is designed to protect every customer’s investment through a highly flexible, modular configuration. Built on a 12.5 kWh module architecture, a single hybrid inverter supports 50–1000(*) kWh of storage with 2–8 hours of duration. For larger requirements, multiple inverters can be connected in parallel, enabling seamless and scalable system expansion.
This modular approach enables precise capacity matching across applications, from small supermarkets to large industrial facilities, maximising energy utilisation, reducing upfront costs, and improving system efficiency.
0 Outage: Continuous Power for Critical Operations
PowerKeeper delivers seamless backup power to keep businesses running without interruption, even during grid failures. It supports critical loads in supermarkets, factories, warehouses, and commercial buildings.
- 10 ms ultra-fast switching to off-grid mode during grid outages
- Built-in Automatic Transfer Switch (ATS) supporting up to 250 kW load
- No external ATS cabinet required, saving space, time, and cost
7 Ups: A Better Experience at Every Step
1. Easy Installation
The system includes AI cell-level health monitoring of cell temperature, current and voltage.
- Choice of 12.5 kWh single modules or 50 kWh pre-built stacks
- Fits even in tight spaces; manual handling or forklift-friendly
2. Fast Deployment & Commissioning
- Plug-and-play design
- 3-step commissioning in under 5 minutes via iSolarCloud
- Unified monitoring for PV, storage, and EV charging
3. Reliable Operation in Harsh Environments
- Operates in water up to 50 cm depth
- IP66 & C5 corrosion protection
- Wide operating range: –20°C to +55°C, ≤60 dB noise
- Type I + II lightning protection
4. Simple Maintenance
- Replacement without repair
- Pack-level balancing within ≤48 hours
- Supports mixing old and new batteries for flexible upgrades
5. Profit Optimisation
PowerKeeper supports multiple revenue streams:
- Self-consumption
- Energy arbitrage
- Frequency response (FFR)
- Demand control
AI-driven operating modes automatically optimise strategies using real-time electricity prices, PV generation forecasts, and load predictions.
6. Comprehensive Safety
- 5D alerts: current, voltage, temperature, smoke, and water immersion
- Triple-guard protection at cell, pack, and plant levels
- Appliance-level safety for daily operation
7. Long-Term Value
A future-proof system that grows with the business, reduces risk, and maximises lifetime returns.
TECHNICAL INFORMATION:
Battery (DC):
- Cell Type: LFP 3.2 V
- Nominal Capacity: 12.48 kWh
- Depth of discharge (DOD): 100%
- Nominal voltage range: 32.4 V ～ 43.8 V
- Nominal charge / discharge rate: 0.5P
Minimum Pack Requirement: The modular architecture establishes a minimum four-battery-pack baseline (pre-built 50 kWh stack) to meet the initial operating DC voltage required by the SH-CX C&I hybrid inverter. When building a multi-stack unit under one inverter, all parallel stacks must have identical module counts, meaning the same physical height and voltage level.
