Thanks - confirms what I thought.
VRB has some key technical advantages over lithium for storage with energy discharge and longevity as you would know making it a better fit IMO for industry and grids, however weight and size are factors obviously in small applications where others can compress their unit size for domestic consumption.
Therefore industrial applications and grid support should be their primary focus not mass market housing as I see it.
However if the legislators make batteries (whatever species) compulsory for when you build as some US states are doing with solar panels - who knows ?
Good old Elon has the world at his feet (atm) so everyone appears to be looking that way for now - but that can change.
In any event, fascinating to watch this sector evolve so I'm holding on despite the demise of the wave buoy and adding here and there on dips. Cheers and GL