A few facts

The battery solution has a lifespan of 20+ years with an electrolyte which works indefinite. Design life is 20,000 charging cycles. The liquid on which the battery runs does not have a limited lifetime.

A LCA (Life Cycle Assessment) has been conducted on the VisFlow system finding minimal carbon footprint for manufacturing and running. You can read analyses and results here.

The capacity can be restored annually – Oxygen in connection with liquid causes approximately 1% capacity loss per year. VisBlue has a patent for removing the oxygen from the liquid.

The VisFlow battery is safe, which means it is non-flammable and non-explosive. One of the reasons why is because the liquid on which the battery runs consists of 85% water.

The VisBlue battery increases the utilisation rate of power produced from renewable energy sources and allows you to use it around the clock.

Client portfolio

We have over 150+ installations in both Denmark and around Europe in housing associations, schools, communities, the industrial market etc. The VisFlow is applicable to stationary applications.

The battery has customized solutions, which means it is flexible in power (kW) and capacity (kWh). The battery is made of two tanks filled with a vanadium-based electrolyte-fluid and what is called a stack. The size of the tanks determines the capacity of the battery. The fluid in the two tanks acts as cathode (positive electrolyte) and anode (negative electrolyte), exactly like a regular battery.

Our new design for the container battery is compact, has high performance and is sustainable.

Advantages

Flow batteries are sustainable – our LCA prove this with a minimal CO2 impact. Access the LCA here
We focus on using recyclable materials whenever possible to produce our batteries, resulting in a 99% recyclability of our battery solution.
The only thing that cannot be reused is the membrane in the battery, which can be easily replaced.

If you choose a Flow battery, you have most flexible solutions available when it comes to customized power and capacity (kW and kWh), because they are independent of each other.

The typical owner of a solar system utilises approximately 30% of the solar energy – the rest is sold back to the grid. With our smaller system, the owner utilises up to 75% which makes solar energy a significantly better investment. And with a sufficiently large battery, the owner can strictly utilise all the stored energy.

VisBlue’s Vanadium Redox Flow battery differs from other redox flow batteries due to the abilities of the electrolytes. Since we use vanadium instead of other types of electrolyte fluid, it has made it possible to use the same fluid in both tanks of the battery. This is an important advantage as we reduce the possibility of cross-contamination of the electrolyte fluids and therefore eliminate the problem of degraded electrolyte.

During the day, when the PV’s produce energy, we do not necessarily consume energy, which means that we have two choices: We can supply energy to the grid (often at a deficit), or we can find a way to store the energy. Here, VisBlue’s Redox Flow battery is an advantage, as this enables you to store energy during the day and use the same energy in the evening.