They spent $2M on the demonstration plant, which is ~1/10th the size. It doesn't store the full 20 MWh. (Or is that 35 MWh? The article seems inconsistent on that.)
The bad news is, the capacity is lower, but the good news is the $2M is the cost to build the first prototype, and prototypes can be extremely expensive compared to the real manufacturing costs.
It seems like the only information available about the price is their estimate that they can hit $150/kWh.
The bad news is, the capacity is lower, but the good news is the $2M is the cost to build the first prototype, and prototypes can be extremely expensive compared to the real manufacturing costs.
It seems like the only information available about the price is their estimate that they can hit $150/kWh.