Tesla announces "Powerwall" batteries

[russ]

I have to believe the utilities would be the most interested party if this were a real solution. No word from their side that I have heard.

[Ian S]

I trust it's not a pro-rated warranty like your typical car battery. Wonder how much the 10 year warranty extension costs. I also wonder how smart it is in terms of dealing with peak shaving.

[SmartElectric]

Brilliant! Less than half the price of competition or DIY. Needs to be matched with an inverter, generally going to be the same inverter used for the solar and powerwall battery system.

[RedDenver]

http://www.teslamotors.com/powerwall

$3500 for a 10 kWh backup battery
$3000 for a 7 kWh daily cycling battery

Both have a 10 year warranty