4 ms·

So it costs 3 cents a watt/hour (over the lifetime of the battery--much more than that short-term) to store (not produce) the energy, and that is supposed to be

So it costs 3 cents a watt/hour (over the lifetime of the battery--much more than that short-term) to store (not produce) the energy, and that is supposed to be better than the seven cents a watt/hour that the electric company will charge for delivery right to my doorstep? I don't get it.

wglb 17y ago
Those are really two different things. Compare their projected cost with, say, a deep discharge marine battery at $200 for 10 ah, which is 120 watt/hour. The claimed figures are a huge improvement over what is available today. If they can make this work, it will be a seriously big deal. There is a long ways to go before that, though.