IN Brief:
- Invinity’s operating fleet has dispatched more than 10GWh for customers.
- Cumulative delivered energy increased by 85% during the previous year.
- The total covers commercial operation across VS3 and Endurium battery systems.
Invinity Energy Systems says its operating fleet of vanadium flow batteries has dispatched more than 10GWh of electricity for customers. The cumulative total increased by 85% over the previous year and covers commercial operation across the company’s VS3 and Endurium systems.
The figure measures energy delivered from installed equipment rather than contracted capacity, project announcements, or factory output. Invinity began tracking fleet dispatch from the first quarter of 2022, giving the total a practical value for customers assessing how the technology performs through repeated charging and discharging cycles.
One contributor is the system installed at the Viejas Resort and Casino in California, delivered by Indian Energy. Invinity says that installation has dispatched more than 0.5GWh since entering full operation and has met or exceeded warranted performance across several measures. Its wider fleet operates at sites in the UK, Europe, the US, Canada, Australia, and Southeast Asia.
Vanadium flow batteries store energy in liquid electrolytes held in external tanks. The power section and stored-energy volume can be scaled more independently than in conventional packaged batteries, supporting applications where long discharge periods and frequent cycling are required. The design also introduces pumps, membranes, controls, power electronics, and fluid-management systems that must remain reliable over the operating life.
Cumulative dispatch provides evidence that those systems are working in commercial environments, although it does not establish the cost, availability, or profitability of each project. A fleet total can include batteries with different duties, ages, climates, and utilisation rates, so project-level efficiency, maintenance, and degradation data remain important.
The 85% annual increase reflects both higher utilisation and the addition of systems entering operation. Invinity installations serve applications including solar shifting, grid services, resilience, and commercial energy management. Each operating pattern places different demands on the battery: frequency response requires rapid power changes, while energy shifting involves sustained discharge and resilience assets may remain idle for longer periods.
That range makes the aggregate number useful without making it conclusive. Ten gigawatt-hours distributed across several markets and product generations cannot replace evidence on round-trip efficiency, component replacement, electrolyte management, and site availability. Customers considering new projects will want to know how dispatch is distributed and whether older installations continue to meet performance guarantees.
The operating milestone arrives as Invinity expands its Endurium product line and progresses larger installations. The Copwood VFB Energy Hub in the UK is expected to become Europe’s largest operating vanadium flow battery when commissioned. Projects of that scale will increase cumulative throughput more quickly, while imposing stricter requirements on commissioning, remote monitoring, service response, and spare-parts availability.
Flow batteries compete in a market dominated by lithium-ion systems at shorter durations. Their case rests on high cycling capability, long service life, fire characteristics, and the ability to expand energy capacity without increasing every part of the power-conversion system at the same rate. Those advantages have to offset a larger physical footprint, fluid-handling equipment, and a less mature manufacturing and service base.
For network operators, a broader mix of storage technologies can support different system requirements. Frequency response, intraday balancing, renewable shifting, and longer-duration reserve do not necessarily favour the same chemistry or plant design. A battery able to tolerate sustained throughput with limited capacity loss may suit applications where frequent use is more valuable than compact size.
The dispatch announcement is distinct from Invinity’s recently disclosed 43MWh order for a US power cooperative. The order concerns future deployment; the 10GWh figure relates to equipment already operating. Separating contracted capacity from delivered energy gives customers and investors a clearer view of how much of the company’s technology has progressed beyond project development.
The next stage is a more detailed operating record. Growth in cumulative energy should be accompanied by evidence covering availability, efficiency, service intervention, and warranty performance as the installed fleet ages. The 10GWh total strengthens Invinity’s commercial reference base, while future procurement decisions will depend on how reliably that throughput continues to increase.
