I'm guessing that's 10000 Kw hours give or take.
I was commenting on the cost of shuffling Kw in the redflow batt I just don't think it will be economic at the micro scale.
Nothings is %100 efficient but the deal your on sounds pretty good and fair enough that you consider it as 100% from your point of view.
In Melbourne Australia it's a bit different. For the privilege of "storing" power in the grid we pay a bit over a $1 a day.
The "stored" power goes back to the grid at .07 cent and we can buy it back for .25 per KW.
We were even lucky enough to be able to pay additional $$ on our power bills for the "smart meters" upgrade a few years ago so they could inflict these shenanigans on the punters, courtesy of the Victorian government (who also paid a chunk of change to the utilities for the smart meter program).
So yes we got to pay twice for smart meters, both direct and indirect and now we are been bent over on the sell back price.
Only way I see to cut the cord here is a combined heat and power generation which I'd lean heavily on for 4 months of the year, oh and at least another 3Kw of panels.
Because we get SFA off solar for around 3 months with a month on either side been pretty uninspiring.
1.5Kw grid tie on the house, makes the A/C a zero sum game but that's about it.
Still need to get energy somewhere so natural gas would bridge that "gap" with piston power, but pistons wear out.
