Invinity Energy Systems in the UK

With UK energy bills more than 40% higher than in 2022 and more than £2bn a year being spent to curtail renewable power generation, the need battery storage has never been greater in the UK. Offering unlimited cycling, zero fire risk and 30+ year service life, Invinity’s vanadium flow batteries deliver unparalleled flexibility in operation and broad applicability to a range of different use cases. From colocated battery + solar or wind projects to standalone BESS, commercial and industrial sites, datacenters and more, our market leading technology can meet your needs.

Why UK customers choose Invinity’s market-leading Made In Britain technology:

• Long-term flexibility. Designed for 30+ years of heavy-duty operation, matching the lifespan of solar and wind assets and the flexibility to adapt to the ever-evolving UK energy landscape
• Superior high-throughput economics. Lowest lifetime cost per MWh delivered with unlimited cycles and zero performance degradation.
• Safety first. Our electrolyte is non‑flammable and our systems have zero risk of thermal runaway, easing siting, construction and community acceptance with fewer objections during planning.
• UK-built. Local manufacturing and support helps to boost the UK economy, creates jobs, and ensures domestic energy security. 

Invinity’s manufacturing facilities located in the Central Belt of Scotland are our centre of excellence in the UK where we undertake design, engineering, manufacturing and assembly operations for our customers based in the UK, Europe and further afield.

Invinity is listed on the London Stock Exchange (AIM:IES) with National Wealth Fund as our largest shareholder, we are backed by Tier-1 UK institutional investors and have completed multiple projects supported by the UK Government.

Invinity delivers the world’s most advanced, most deployed, and most reliable vanadium flow batteries. Our products are engineered for predictable performance under continuous cycling, with no capacity fade from cycling, accurate SOC measurement, and sub‑second response for operational flexibility. We’ve built our technology on decades of electrochemistry know‑how and validated performance data.

Our current product lineup:

• Endurium™: Our next‑generation, modular VFB optimised for large‑scale, long‑duration projects; engineered to scale from 3 to 100+ MW and operate 4–18+ hours without cycle limits.
• Endurium Enterprise™: Tailored for Commercial & Industrial (C&I) customers needing 1-20 MW, delivering safe, economical renewables integration and tariff optimisation with long‑duration flexibility.

Furthermore, independent verification of our product specifications from DNV, combined with a full suite of US certifications and standards gives you the confidence to choose Endurium for your project, over less proven, less bankable alternatives.

Don’t just take our word for it. Invinity’s systems are operating at nearly 100 sites across more than 17 countries, backed by years of real‑world operating data and sustained, high‑throughput performance in commercial settings. We’ve deployed the world’s most proven flow batteries at scale, and we’re bringing that same experience to the UK. To date, our solutions have delivered more than 8 GWh of energy in the field, proving consistent, reliable performance over time.

Some of our UK customers:

• Invinity Copwood VFB: At almost 21 MWh, this solar-paired vanadium flow battery will be the biggest in Europe; leveraging its long-duration and high cycling capabilities for solar shifting and energy arbitrage.
• Energy Superhub Oxford: Invinity delivered a 5 MWh VFB, then the largest in the UK, to this innovative EDF-owned project that provides local grid services and energy trading capabilities.
• European Marine Energy Centre (EMEC): Paired with tidal power and a green hydrogen electrolyser, in a world first, this vanadium flow battery was chosen for its ability to cycle heavily without degradation.

You’re not selecting a one‑time solution—you’re investing in a durable asset and scalable solution. Invinity’s UK team delivers commercial, technical, and project support from early concept through deployment and long‑term operation. We work side‑by‑side with developers, owners, operators, and business customers to support entire portfolios, not just individual projects.

How we work with you:

• Built to scale: Modular, standardised system elements designed for consistent replication across multiple sites.
• Lifecycle focus: End‑to‑end alignment, from system modeling and interconnection planning through commissioning and decades of operation.
• Long‑term partnership: Ongoing training, digital tools, and responsive, lifetime support—reinforced by our UK‑based support team.

Our approach is straightforward: start with your objectives, then configure storage that delivers bankable outcomes—cost savings, revenue stacking, and resilience—without compromising safety or longevity. We combine factory‑built standardisation with simplified site‑level engineering so your projects are repeatable, serviceable, and designed to scale. From utilities to data centers, Invinity delivers.

Typical UK use cases:

• Grid‑scale: Capacity and renewable firming, ancillary services, and transmission‑deferral strategies
• C&I: Demand charge management, renewables integration and resilience
• Datacentres: Load balancing, grid connection optimisation and renewables integration

Does Invinity operate in the United Kingdom?

Invinity Energy Systems plc is headquartered in the UK and is publicly listed on the London Stock Exchange (AIM: IES). The company plays an active role in the UK energy storage sector and works closely with utilities, developers, and policymakers to support the transition to a low‑carbon electricity system.

Does Invinity manufacture energy storage systems in the UK?

Yes. Invinity operates manufacturing and assembly facilities in the UK, supporting the delivery of utility‑grade vanadium flow battery systems for domestic and international projects. UK manufacturing is a key part of Invinity’s strategy to maintain quality, scale production, and support local supply chains.

What types of projects does Invinity support in the UK?

Invinity supports utility‑scale and long‑duration energy storage projects designed to help the UK integrate renewable generation, enhance grid flexibility, and improve system resilience. These projects typically involve multi‑hour energy shifting, frequent cycling, and long operational lifetimes.

How proven is Invinity’s technology in the UK?

 The UK is home to some of Invinity’s longest‑running and highest‑profile deployments, and the company has delivered some of the largest vanadium flow battery systems ever installed. These systems are operating in real‑world conditions, providing daily grid services—not pilot demonstrations.

How does Invinity’s technology compare to other non‑lithium alternatives??

 Invinity’s vanadium flow batteries are:

Is Invinity involved in long‑duration energy storage (LDES) in the UK?

Yes. Long‑duration energy storage is a core focus for Invinity, and the company is actively engaged in UK programmes, designed to support multi‑hour and multi‑day flexibility, notably including the Cap & Floor Scheme. Invinity’s technology is purpose‑built for these use cases and projects using a total of approximately 16.7 GWh of Invinity’s batteries have been deemed as eligible for the Scheme. 

Why do UK customers choose Invinity?