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They've had a Tesla branded battery option up on their website for quite a while now: Home Energy Storage & Battery Backup System - SolarCity
I have a 10.5 kw solar on the house and the other day with a power outage, realized that without a battery backup and bypass switch, I could not use the power i was generating...........just wasted! If you know anybody as Solar City that I could talk to about their system, I would be very appreciative.Not sure but they have said when they are done testing ... 2015 they will be able to install in CA and in HA with each PV system and still sell electricity to homeowner for cheaper than Utilities ...
Edit: Seems like there is a large market of "Preppers" out there that would love a solar system with a battery backup. Along with anyone who has every experienced a prolonged power outage
If grid fails, doesn't matter if you got solar on your roof or not. Even if solar system is capable to generate more then your house consume, it not going to supply you with power.I have a 10.5 kw solar on the house and the other day with a power outage, realized that without a battery backup and bypass switch, I could not use the power i was generating...........just wasted! If you know anybody as Solar City that I could talk to about their system, I would be very appreciative.
Frankrb
Does anyone know the price for this battery? I really like the idea of having my own back-up option...
.. Each of my batteries is rated at 1100 AMP-hours..QUOTE]
whats the total AH of your setup? just curious as I recently put a small [really small] AGM + Solar on my RV + upgrade to 12v lighting and was considering doing the same for a cottage/vacation spot in an off-grid location.
chris
By the way, an Absolyte IIP absorbed glass mat 1100 A-h battery weighs 550 lbs, without hardware. With the thick copper buss bars that tie all 16 of these batteries to each other, plus the250MCM welding cable running the juice to the inverters, plus the mounting beams and such, my bank weighs nine tons. I try not to move it around much.....
With that as perspective, the batteries Solar City is discussing seem like amusing little toys to me. Possibly enough to keep a light or two on in your house in case of an extended power outage, but not enough to run your refrigerator or freezers, let alone heat or a/c..... I'd definitely like more information in that regard.
With that as perspective, the batteries Solar City is discussing seem like amusing little toys to me. Possibly enough to keep a light or two on in your house in case of an extended power outage, but not enough to run your refrigerator or freezers, let alone heat or a/c..... I'd definitely like more information in that regard.
With that as perspective, the batteries Solar City is discussing seem like amusing little toys to me. Possibly enough to keep a light or two on in your house in case of an extended power outage, but not enough to run your refrigerator or freezers, let alone heat or a/c..... I'd definitely like more information in that regard.
There are a lot of Solarcity investors on this board, but not many really understand their business model and/or risks.
Your usage is fairly for a typical US household; utilities usually model a household as using about 750 kWh / month, or about 25kWh / day. An 8kWh battery would cover an outage of up to 8 hours of typical use, which covers about 98% of outages (http://certs.lbl.gov/pdf/54365.pdf, Table 3-2). If you turn off non-essential loads, such as pool pumps, and take other conservation measures such as adjusting thermostats, most households would find an 8kWh battery fairly useful in an outage.According to my electric company, the worst month I ever had was an average of 50 KWh/day. My best averages were in the 27-29 KWh/day. Not hard to figure where the 8 KWh batteries would fit into that equation.
Now if only we could just use the 85kWh battery parked in the garage...
But then people like me will come up with all sorts of crafty ways to make lots of money for me, you, and the grid...Yes, my wish as well. Nissan is testing using the 24kWh battery in the Leaf for home backup power in Japan. Evidently the "Leaf to Home" power station to enable this is $6000.
Tesla, if you're listening, I'd love something like that, too.
Now if only we could just use the 85kWh battery parked in the garage...
Tesla/Solar city should have a program to adopt a used 60/85 kwh battery pack at end of auto life. Maybe at 10 years old it will have 50% to 70% of original capacity. Just figure out how to place it in the garage to use as backup grid storage hooked in with the solar system.
Forget this 8 kwh stuff. 40-50 kwh from a used Tesla battery pack would be more useful.