Vanadium Battery Technology

Vanadium flow batteries are well proven in many installations around the world and are now coming into full production. They have a number of significant advantages over Lithium-Ion batteries; most importantly vanadium batteries have a lower cost of storage, in similar use scenarios, over their 25 years plus life expectancy, which is improving rapidly.

Comparison of vanadium and lithium-ion batteries

Vanadium BatteriesLithium-Ion Batteries
60 – 100% Utilisation10 – 20% Utilisation
Large, multiple, stacked services
Daily, heavy usage
Energy focussed
Low energy density
Suitable for fixed applications
Single Service
Occasional managed usage
Power focussed
Mid energy density
Suitable for mobile applications
Cheap energyCheap power
No Degradation
Low Maintenance
Regular maintenance and management
25+ years life expectancyShort life 3-10 years
Fully recyclableDisposal issues
100% Depth of discharge0–50% Depth of discharge
Safe, no fire riskFire risk
Must be managed
invinity renewable energy battery storage

Credit: 2MW/5MWh Invinity flow battery – Energy Superhub Oxford project, Cowley, UK

Storage complements solar projects

Benefits of co-located energy storage

  • Gives control over when solar is used
  • Time-shift the use of solar generation to peak times
  • Opportunity to take advantage of increasing market volatility
  • Enables greater deployment of renewables

Storage technologies in 2050

Vanadium batteries are best placed to support frequent intraday time shift grid support.

graph showing discharges per year and hours of discharge