PowerStack Sungrow: C&I energy storage
with liquid cooling for industrial projects
Energy storage is no longer a strategic option for European industry: it is an operational necessity. Electricity market volatility, the expansion of photovoltaic self-consumption, and the need for grid stability have accelerated demand for BESS (Battery Energy Storage Systems) in commercial and industrial applications.
In this context, Sungrow PowerStack is establishing itself as one of the most complete and technically advanced solutions in the C&I market. These are not simply industrial batteries: we are talking about highly integrated systems with intelligent liquid cooling, multi-level safety architecture, and real scalability for multi-MWh projects.
At Vico Export Solar Energy, we work with the full PowerStack range to deliver solutions tailored to each type of industrial project.
What is PowerStack and why it matters in industrial energy storage
The Sungrow PowerStack series is specifically designed for commercial and industrial environments where technical requirements exceed those of the residential sector.
All models share a common architecture based on:
- Battery cells LFP (Lithium Iron Phosphate) 3.2 V / 314 Ah
- High-voltage configurations (691.2 V – 934.4 V depending on the model)
- 0–100% depth of discharge
- High-efficiency DC/AC converters
- Intelligent liquid cooling with AI-based control
- Advanced overcurrent and thermal runaway protection systems
The highest-capacity model, ST510CS-4H, reaches 514 kWh and 125 kW, configured in 256S2P.
The intermediate model, ST255CS-2H, offers 257 kWh and 125 kW in a 256S1P configuration.
The ST225kWh-110kW-2h model provides 229 kWh (BOL) and 110 kW, optimized for medium-sized industrial applications.
This structural consistency simplifies scalability and system sizing in multi-cabinet projects.
Intelligent liquid cooling: the key to stability and lifetime
One of the most differentiating aspects of Sungrow PowerStack compared to other C&I BESS systems is its liquid cooling system with AI-based thermal control.
In the ST255 and ST510 models, the maximum temperature difference between cells is kept at ≤ 2.5 °C.
In the ST225 model, the thermal difference is further reduced to ≤ 2.2 °C.
In addition, the system reduces daily thermal losses by 33% thanks to AI-controlled thermal balancing.
For installers and EPC contractors, this translates into:
- Lower cell degradation
- Greater stability under demanding cycling conditions
- Improved performance in extreme climates
- Optimized system lifetime
In industrial energy storage, thermal management is a decisive factor in project bankability.
Electrical efficiency and grid performance
The PowerStack systems integrate DC/AC converters with efficiencies reaching:
- Up to 98.6% in ST225kWh-110kW-2h
- Up to 98.5% in ST255CS-2H and ST510CS-4H
They operate at 400 V, with THD ≤ 3% and adjustable power factor (1.0 capacitive – 1.0 inductive).
They support:
- On-Grid operation
- Off-Grid operation
- Automatic switching
And scalability up to:
- 25 units in parallel in On-Grid mode (ST255 and ST510)
- 10 units in Off-Grid mode
This enables the design of multi-MWh solutions for industrial parks, logistics centers, and high-consumption production plants.
Multi-level safety in industrial environments
In C&I applications, safety is not an add-on: it is a regulatory and financial requirement.
The PowerStack range incorporates:
- AI-based cell status monitoring
- Triple overcurrent protection (PACK, RACK and PCS)
- Three-level fire protection system
- Flammable gas, smoke and heat detectors
- Hot aerosol fire suppression system
It complies with international standards such as IEC 62619, IEC 63056, IEC 62040, IEC 62477, IEC 61000, IEC 62933 and UN 38.3.
This technical approach is particularly relevant for industrial projects subject to financing or technical audits.
Which PowerStack model to choose depending on the project type
PowerStack ST225kWh-110kW-2h
Designed for industrial self-consumption, demand optimization, and backup in medium-sized industries. 110 kW with 229 kWh usable capacity.
📥 (ST225kWh-110kW-2h datasheet)
PowerStack ST255CS-2H (125 kW – 257 kWh)
Higher discharge power, suitable for industries with greater load variability and fast response requirements.
PowerStack ST510CS-4H (125 kW – 514 kWh)
The highest energy capacity solution within the range, ideal for applications requiring longer storage duration or energy arbitrage strategies.
At Vico Export Solar Energy, we supply all three models with specialized technical support for system sizing and C&I project advisory.
Sungrow PowerStack and the future of C&I storage
The growth of industrial energy storage is closely linked to:
- Photovoltaic self-consumption with time-of-use optimization
- Peak demand reduction
- Microgrid integration
- Energy resilience strategies
PowerStack offers a coherent, scalable and technically robust architecture to address these scenarios.
For installers, engineering firms and distributors, it represents an industrial-grade solution backed by one of the most established manufacturers in the sector.
If you are developing a C&I project and require detailed technical information, you can consult the official datasheets or access the available models directly in our online store.