Invinity Energy Systems plc was created in April 2020 through the merger of two flow battery industry leaders: RedT Energy plc and Avalon Battery Corporation. With over 65 MWh of systems deployed or contracted across 50 sites in 14 countries, Invinity is active in all major global energy storage markets and has operations in the UK, Canada, USA, China and Australia. Invinity Energy Systems Plc is listed on the London Stock Exchange.

Invinity designs and manufactures Vanadium Flow Batteries (VFB). In contrast to lithium-ion batteries which store electrochemical energy in solid forms of lithium, flow batteries use a liquid electrolyte. In VFBs, this electrolyte is composed of vanadium dissolved in a stable, non-flammable, water-based solution.

The company develops and supplies energy storage systems for large C&I and utility-scale applications in front-of-meter, behind-meter and off-grid configurations. The company has certification to ISO 9001, ISO 14001, and ISO 45001.

Following the successful raise of £57.38 million (US$73.29 million) on 24 May 2024, Invinity announced a new plant in Motherwell. This new Motherwell plant will focus on assembly of VRFBs, and their Bathgate plant, at which the batteries’ cell stacks are manufactured, will bring Invinity Energy System’s VRFB annual manufacturing capacity in the UK to more than 500MWh.

Invinity's highly scalable, factory-built flow battery products can run continually with no degradation, charging and discharging for over 25 years. Systems can be AC- or DC-coupled, depending on the inverter used.

The Invinity VS3-022 is the core building block of the company's energy storage systems. It uses proven vanadium redox flow technology to store energy in an aqueous solution that never degrades, even under continuous maximum power and depth of discharge cycling. It is non-flammable, validated as having no risk of thermal runaway in the UL 9540A test standard.

Invinity, alongside Pivot Power (part of EDF Renewables) has energized the UK’s largest flow battery as part of Energy Superhub Oxford on December 2021. At that site, Invinity has installed 27 of its VS3 flow batteries. these batteries can deliver over 5 MWh in total, enough energy to serve the daily electricity needs of over 600 UK households.

Invinity has a strategic relationship with SIEMENS Gamesa for a joint development and commercialization agreement for pure utility-scale battery to develop a new product together for 50MW+ projects. Global EPC Hyosung Heavy Industries is another strategic partner.

Price per kWh.

• Safe The safe and stable chemistry of the vanadium electrolyte has a far lower risk profile than other battery storage technologies. This is because vanadium is dissolved in a stable, non-flammable, water-based solution.

• Modular Design Being modular it makes energy storage systems highly scalable, ranging in size from less than 250 kilowatt-hours to tens of megawatt-hours.

• Unlimited Cycle Life With no degradation, Invinity’s batteries deliver more than 20,000 deep discharge cycles over their lifespan, without the need for augmentation found in lithium batteries.

Grid Storage Invinity’s VFB technology is ideal for grid-scale service providers who need long-term flexibility from their storage assets. The solution suitable for a range of grid-connected projects and can be co-located with renewables, use as standalone trading assets or to ‘front-end’ other energy storage technologies as part of larger hybrid systems.

Commercial & Industrial storage for renewables Adding flow storage to PV installation allows customers to reduce electricity costs, accelerate carbon reduction targets and improve resilience.

Off-Grid Energy Invinity flow batteries provide energy security to keep sites running around the clock.

Degradation of batteries With VFB technology there is no degradation, extending the life cycle of the battery - charging and discharging for over 25 years.