Invinity Energy Systems: Powering the Future of Renewable Energy Storage

Invinity Energy Systems is a global leader in vanadium flow battery technology, delivering safe, reliable, and long-duration energy storage solutions that enable renewable power to be used around the clock. Unlike lithium-ion batteries, Invinity’s flow batteries offer non-flammable chemistry, unlimited cycling, and a 25–30 year lifespan, making them ideal for grid-scale, commercial, and industrial applications. With innovative products like the VS3 and the next-generation ENDURIUM platform, Invinity is redefining how the world stores and uses clean energy.

Introduction: Why Energy Storage Matters More Than Ever

The global energy transition is accelerating at a pace never seen before. Solar panels and wind turbines are being deployed on rooftops, fields, and coastlines worldwide. But one challenge remains: renewable energy is intermittent. The sun doesn’t always shine, and the wind doesn’t always blow. To make renewables a reliable, 24/7 power source, long-duration energy storage has become essential.

This is where Invinity Energy Systems steps in. As one of the world’s most prominent providers of vanadium flow batteries, the company is spearheading a technology shift that ensures renewable energy can be stored safely, cost-effectively, and for decades without degradation.

The Rise of Invinity Energy Systems

Company Origins and Formation

Invinity Energy Systems was formed in 2020 through the merger of redT Energy (UK) and Avalon Battery (North America). This combination brought together European expertise in energy projects with North American innovation in vanadium flow technology. From the start, Invinity positioned itself as a global leader in long-duration energy storage.

Mission and Vision

The company’s mission is simple yet ambitious: to enable a renewable-powered world by delivering safe, durable, and cost-effective energy storage. Unlike short-term solutions, Invinity focuses on high-utilisation applications—where energy needs to be stored and discharged every single day for decades.

What Makes Vanadium Flow Batteries Unique?

To understand Invinity’s success, it’s important to grasp what makes vanadium flow batteries (VFBs) different from the widely known lithium-ion batteries.

Key Advantages of Vanadium Flow Batteries:

Safety – VFBs use a water-based vanadium electrolyte, eliminating the risk of fire or thermal runaway.

Longevity – They can operate for 25–30 years with unlimited charge/discharge cycles.

High Utilisation – Perfect for applications where batteries need to cycle daily without degradation.

Scalability – Easily scaled from megawatts to gigawatts, making them ideal for large energy projects.

Sustainability – Vanadium can be reused and recycled, reducing environmental impact.

These strengths align directly with the growing demand for long-duration, safe, and cost-efficient storage in renewable energy markets.

Invinity’s Flagship Products

The VS3 Vanadium Flow Battery

The VS3 is Invinity’s proven, modular battery platform designed for commercial and industrial applications. Each unit can deliver:

2–40 MWh of capacity

2–12 hours of discharge

Factory-built and tested modules for fast deployment

The VS3 has been deployed worldwide, supporting solar, wind, and microgrid projects. Its modular nature makes it attractive for businesses and utilities alike.

ENDURIUM™: The Next-Generation Platform

Launched in late 2024, ENDURIUM™ represents the fourth generation of Invinity’s technology. It is a scalable solution for grid-scale energy storage, with:

10 MWh to 1 GWh capacity

4–18 hours of discharge

Sub-second response times for grid balancing

Higher energy density and efficiency than previous systems

ENDURIUM positions Invinity as a frontrunner in the race for long-duration energy storage (LDES), directly addressing challenges faced by renewable-heavy grids.

Major Global Projects and Partnerships

UK Leadership in Renewable Integration

Invinity has gained strong support from the UK government through programs like LODES (Longer Duration Energy Storage Demonstration). One of its flagship projects includes a 20.7 MWh installation, set to become the largest vanadium flow battery in the UK. This project will store excess solar power and release it when needed, reducing reliance on fossil fuels.

U.S. Expansion with DOE Support

In the United States, Invinity has secured funding from the Department of Energy (DOE) to deliver over 80 MWh of storage capacity across six projects. These deployments will serve microgrids, research facilities, and rural cooperatives, proving the reliability of vanadium flow batteries in diverse conditions.

European and Global Reach

Beyond the UK and US, Invinity is expanding into Hungary, Spain, and Canada, with partnerships that scale its impact. Collaborations with renewable energy developers ensure that Invinity’s technology is paired with solar and wind at large scales.

Manufacturing and Supply Chain Strengths

Expanding Production Capacity

Invinity has been rapidly expanding its manufacturing capacity to meet global demand. Facilities in Scotland, Vancouver, and the US ensure localized production, while a strategic partnership in China provides cost-efficient access to vanadium electrolyte and components.

Supply Chain Stability

Vanadium, the key material for these batteries, is globally available and recyclable. Invinity’s strategic agreements ensure price stability and long-term availability, which are critical for scaling energy storage deployments.

Financial Growth and Market Position

Strong Investor Backing

Invinity has raised significant funding, including over £50 million in 2024, with major contributions from the UK Infrastructure Bank. This financial support underlines confidence in vanadium flow technology as a central pillar of renewable infrastructure.

Market Competitiveness

While lithium-ion dominates short-term storage, Invinity’s VFBs excel in applications needing daily cycling and long discharge durations. This unique positioning gives the company an edge in the growing long-duration energy storage market, projected to reach multi-trillion-dollar scale by 2040.

Advantages of Invinity Energy Systems for Renewable Integration

Maximising Renewable Utilisation – Store solar energy during the day and release it at night.

Reducing Curtailment – Prevents wasted renewable energy when supply exceeds demand.

Supporting Grid Stability – Provides fast response and frequency regulation.

Decarbonising Industries – Enables businesses and utilities to shift away from fossil fuels.

Future-Proofing Infrastructure – Systems last decades, reducing replacement and maintenance costs.

Challenges and Opportunities Ahead

While Invinity has achieved significant progress, challenges remain. The high upfront cost of vanadium flow batteries compared to lithium-ion remains a barrier. However, the total cost of ownership (TCO) often proves lower due to long lifespan and unlimited cycling.

Opportunities are vast:

Growing demand for net-zero solutions

Government support for long-duration storage

Increasing need for grid resilience

Partnerships with solar and wind developers

Invinity is well-positioned to capitalize on these opportunities as the world demands more reliable, sustainable, and scalable storage solutions.

The Future of Invinity Energy Systems

As nations set ambitious net-zero targets, storage technologies like vanadium flow batteries will play a pivotal role. Invinity’s continuous innovation, global partnerships, and manufacturing expansion signal a future where clean energy is available anytime, anywhere.

By 2030 and beyond, we can expect to see gigawatt-scale deployments of Invinity’s ENDURIUM technology, securing its place as a cornerstone of the world’s renewable energy infrastructure.

Conclusion

Invinity Energy Systems is more than just a battery manufacturer—it is a pioneer of the long-duration energy storage revolution. By offering safe, durable, and scalable solutions, Invinity is helping the world move closer to a clean energy future.

From the VS3 platform for commercial projects to the groundbreaking ENDURIUM system for grid-scale applications, Invinity has demonstrated why vanadium flow batteries are key to making renewable energy reliable and practical.

As the renewable energy transition accelerates, Invinity Energy Systems stands as a beacon of innovation, ensuring that the clean power we generate today can light up the world tomorrow.