Yes. And TSLA doesn't have any utility scale projects except the hypothetical 1MW plant in Ireland until sometime later this year.
Small-scale deployments of Lithium Ion are not going to be as efficient as large-scale deployments of Redox Flow. Period. I don't think TSLA has bet on the right technology at the utility scale. Lithium Ion is great for cars, but better technologies simply exist in other niches.
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Look, Redox Flow batteries are ahead of TSLA. They exist right now at the "small scale" of 2.2MWhr.
These are the numbers for a utility-scale level company... currently mass producing Redox Flow batteries. TSLA power wall just doesn't compete. Not by a long shot.
"Slated for commissioning in 2016, ViZn's ZnFe redox flow battery system will be the largest of its type in North America and Europe."
"The first of these projects is expected to be brought online by the end of Q316."