[XorNot]

Might want to check your numbers there. $10,000 / 100 kWH == $0.10 per Wh.

Which you absolute cannot get in any market. If you could, everyone would do it because the supply cost per kWh including replacement would beat regular power company power.

EDIT: Just went back over my old calculations for this. The basic problem is that you trade off against the cost of peak electricity, not your solar.

So you can essentially assume off-peak and shoulder power is used for charging, and then you use that to offset your most expensive period. The question is then "how efficient is charging" and "how many cycles do you get from the battery before replacement".

Even at $100/kWh, the math is a near miss rather then a clear win as far as I can tell still.

[jacquesm]

Too late to edit, that should have been KWh of course.