As with anything I suspect that this is to do with economies of scale. Delivering a 100MW battery installation in under 6 months is challenging. Being able to a

As with anything I suspect that this is to do with economies of scale. Delivering a 100MW battery installation in under 6 months is challenging. Being able to achieve this using their current manufacturing base is impressive. That's not to say Li-ion batteries are ideal, but right now, at this moment in time, this is probably the only way of achieving a solution in under 6 months. I believe the newer Glass batteries [1] will be the long term solution for this type of installation, but they are some years off, and South Australia has a problem that needs solving this year. [1] http://spectrum.ieee.org/energywise/energy/renewables/does-new-glass-battery-accelerate-the-end-of-oil http://spectrum.ieee.org/energywise/energy/renewables/does-n...