Vanadium Redox Flow Battery Technology for Long-Duration Energy Storage
Sai Bioenergy partners with Invinity Energy Systems to deliver globally proven Vanadium Redox Flow Battery (VRFB) technology. They serve utilities, industries and renewable energy projects. We combine world-class battery innovation with local engineering expertise. It enables safer, longer-lasting and more resilient Long-duration Energy Storage (LDES) solutions.
A Strategic Partnership for Grid-Scale Energy Storage
Invinity contributes more than 15 years of research and development, over 80 patents, and commercial deployments across multiple countries. Its manufacturing facilities are located in the United Kingdom and Canada, and the technology proven through dozens of grid-scale projects. This global expertise strengthens Sai Bioenergy’s ability to deliver reliable, future-ready energy storage solutions.
Global Technology Leadership
More than 15 years of research and development behind a proven flow battery platform.
Proven Commercial Deployments
Commercial installations delivered across multiple countries and grid contexts.
Manufacturing Excellence
Manufacturing facilities in the United Kingdom and Canada supporting global supply.
Continuous Innovation
A patent portfolio of more than 80 filings and an active development roadmap.
Invinity by the Numbers
Projects delivered
Deployed storage capacity
Energy discharged
Projects across multiple countries
Patents
Research and development
Benefits of Vanadium Redox Flow Battery (VRFB) Technology
- Non-flammable water-based electrolyte for superior safety.
- Virtually unlimited charge-discharge cycles with minimal degradation.
- Operational lifespans exceeding 30 years.
- Flexible discharge durations from 3 to 18 hours.
- Scales from megawatt-hour to gigawatt-hour projects.
These capabilities make them ideal for renewable integration, utilities, microgrids and industrial applications.
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Redox-flow Batteries
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Lithium-ion Batteries
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Suited to long-duration stationary storage
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Suited to compact, high-energy applications
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Lower energy density
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Higher energy density
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Capacity can be expanded through larger electrolyte tanks
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Capacity is more closely tied to the battery pack
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Can be topped up or replenished
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Requires replacement or augmentation of battery packs
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Lower degradation potential
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Higher thermal and cycle-life concerns in some applications
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Can support multi-level stationary storage
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More space-efficient for mobile applications
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Applications for Long-Duration Energy Storage
Vanadium Redox Flow Battery (VRFB) systems support renewable energy integration, utilities, commercial and industrial facilities, microgrids, behind-the-meter installations and critical infrastructure requiring reliable, flexible and long-duration energy storage.
Renewable Integration
Firming solar and wind so clean power is available when it is needed.
Utilities
Grid-scale storage supporting reliability and ancillary services.
Commercial & Industrial
Peak shaving and reliable supply for energy-intensive facilities.
Microgrids
Islanded and hybrid systems for campuses and remote sites.
Behind the Meter
On-site storage that lowers demand charges and improves resilience.
Critical Infrastructure
Long-duration backup where continuity of supply is essential.
Building the Next Generation of Energy Storage Solutions
Sai Bioenergy and Invinity continue to expand access to advanced energy storage technologies, strengthening grid resilience, improving renewable energy integration and helping build cleaner, more flexible power systems for the future.
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