It will be interesting to see whether Form's iron-air batteries end up priced out of the market as storage cost continues plummeting with no bottom in sight. I

It will be interesting to see whether Form's iron-air batteries end up priced out of the market as storage cost continues plummeting with no bottom in sight. I have not seen round-trip efficiency figures for iron-air, so guess it must be low. (I welcome correction.) Transportability of synthetic liquid storage media will make them attractive even where still more expensive than alternatives. Their cost will continue on down, too. It surprises most people that low round-trip efficiency in a storage medium doesn't matter much anymore.