Tired of unstable grid power, high peak electricity costs, safety risks and short lifespan troubles in large-scale energy storage? SINJI Energy provides the 500kW 2MWh VRFB vanadium redox flow battery—a high-safety, long-life, modular solution for industrial & commercial, grid-side, solar/wind integration and large-scale energy storage stations. This standard module supports parallel expansion; 10 sets can be quickly integrated into a 5MW 20MWh grid-scale energy storage system to meet long-duration, high-power energy storage demands.
Why Traditional Energy Storage Solutions Fail Large-Scale Projects
Lithium-ion batteries are widely used in large-scale energy storage, but they bring unavoidable pain points for industrial and grid projects:
• Severe fire & explosion risks: Flammable electrolyte causes thermal runaway, leading to fires and explosions in stations.
• Irreversible capacity fade: Only 6,000–10,000 cycles, 40%+ capacity loss in 5–10 years, requiring frequent replacement.
• High lifetime costs: Frequent replacements, maintenance and capacity loss greatly increase LCOS.
• Poor scalability: Limited by structure, hard to realize flexible power & capacity expansion.
• Narrow temperature adaptation: Unstable performance in high-cold or high-temperature areas.
SINJI 500kW 2MWh VRFB solves all these flaws, providing a 20+ year reliable energy solution for large-scale projects.
Safety Comparison: Lithium-Ion Battery vs. Vanadium Redox Flow Battery
Safety Dimension | Lithium-Ion Battery | Vanadium Redox Flow Battery (VRFB) |
Fire Risk | Easy thermal runaway & fire | Zero fire risk, non-combustible electrolyte |
Explosion Risk | Risk under short circuit/overcharge | No explosion risk in any extreme conditions |
Extreme Condition Performance | Fire/explosion on puncture or extreme temp | No abnormality in short circuit, puncture & harsh environments |
Installation Restrictions | Strict limits for station layout | Safe for indoor/outdoor/containerized installation |
6 Core Advantages of SINJI 500kW 2MWh Grid VRFB
1. 100% Non-Flammable, Zero Safety Risk
Our VRFB adopts non-toxic water-based electrolyte with zero flammable components. The stack ensures no internal or external leakage, eliminating fire/explosion risks completely—ideal for high-standard industrial and grid energy storage stations.
2. 20,000+ Cycles & Ultra-Long Service Life
Stack designed cycle life ≥20,000 cycles, 3–4 times longer than lithium batteries. Capacity fade is reversible, maintaining stable performance for decades with no mid-life replacement, greatly reducing long-term operation costs.
3. Modular Design & Fast Large-Scale Expansion
Standard 500kW/2MWh module, composed of 4 stacks in series. Multiple units can be paralleled to rapidly build 5MW/20MWh and larger grid-scale storage systems, matching project capacity demands flexibly.
4. High Energy Efficiency & Stable Output
Single stack energy efficiency ≥80%, system AC-side efficiency ≥70%. Supports 1.1× rated power overload for ≥10 minutes, ensuring stable high-power output for renewable energy stations and industrial loads.
5. Ultra-Wide Temperature Adaptation
Operates reliably in 0℃–40℃ conventional environment and -40℃–60℃ extreme environment, adaptable to high-cold, high-temperature and high-altitude regions worldwide.
6. 100% Recyclable & Eco-Friendly
Vanadium electrolyte is fully reusable and recyclable, with zero toxic waste. Complies with global environmental standards, meeting green energy storage requirements for industrial and grid projects.
Core Technical Specifications (Data 100% Unchanged)
Stack Parameters
Item | Specification |
Rated Output Power of Single Stack | ≥128kW |
Voltage Range of Single Stack | 200–320V |
Rated Current of Single Stack | 640A |
Energy Efficiency of Single Stack | ≥80% |
Rated Current Density | ≥160mA/cm² |
Module Parameters
Item | Specification |
Rated Output Power of Module | ≥0.5MW |
Module Composition | 4 single stacks in series |
Voltage Range of Module | 800–1280V |
Rated Current of Module | 1280A |
System Parameters
Item | Specification |
System Rated Output Power | ≥0.5MW |
System Voltage Range | 800–1280V |
System Rated Current | 1280A |
AC Rated Voltage | 550V |
AC Operating Frequency | 50/60Hz |
System Rated Discharge Capacity | ≥2MWh |
AC Side Energy Efficiency | ≥70% |
Short-Time Overload Capacity | 1.1× rated power for ≥10 minutes |
Designed Cycle Life of Stack | ≥20000 cycles |
Operating Temperature Range | 0℃–40℃ / -40℃–60℃ |
Sealing Performance | No external or internal leakage |
Warranty Period | 1 year after acceptance |
Warranty, Certification & Global Support
• Warranty: 1-year system warranty after project acceptance
• Performance: Stack cycle life ≥20000 times, stable efficiency & zero leakage
• Global Adaptation: 50/60Hz AC frequency, wide temperature range, suitable for global projects
• Customization: Supports 10kW–50kW small-scale & 50MW–200MW large-scale customized solutions
Project Reference
Classic case: 10 sets of 500kW 2MWh VRFB systems integrated in parallel, total scale 5MW 20MWh, stably applied to new energy supporting storage scenarios. More project cases are available on our official website application page.
Next Steps to Get Your Custom Storage Solution
1. Request Free Quote & Project Proposal: Get tailored pricing and technical plan for your industrial/grid storage project.
2. Download Full Spec Sheet: Access complete parameters, installation layout & compliance documents.
3. Talk to Our Expert Team: Get professional support on system design, expansion and installation.
We guarantee a response within 24 hours.
