Just running more math... The article claims their storage product costs about $160/kWh, of which IPWR's inverters would thus represent (according to my math) about 35% of that cost (not counting installation costs / labor).
Of course the "h" part of kWh depends entirely on the battery capacity behind it, and is neither enabled nor limited by the inverters. I'm just using 4h from the existing case study, though I expect it could be triple that.
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