Yep, Going for scale and cost downs. "The deal for 2 gigawatt-hours of batteries is worth at least $300 million" ... that's US$1,500 for a 10kWhr battery ... or about 10% of what it currently costs Redflow to make a 10kWhr battery cell.
"Crucially, adding storage capacity to cover longer interruptions at a solar or wind plant may not require purchasing an entirely new battery. Flow batteries require only extra electrolyte, which in ESS’s case can cost as little as $20 per kilowatt hour." ... or about 1% incremental cost vs Redflow's current cost of extra units.
@Treed perhaps this article helps explain why I suggested Redflow should look at larger battery cells (or at least larger tanks) to take on grid scale storage?
Although given their prospectus indicates they'll lose US$43M in 2022 on revenues of US$37M ... perhaps they have some things in common with RFX? https://essinc.com/wp-content/uploads/2021/07/ACONS2-ESS-Merger-Investor-Presentation-02.pdf
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