Quote Originally Posted by gnihcraes View Post
No batteries or storage of energy with these systems. If power is out so is the solar systems ac input.
SolarCity's new battery system can help you keep the lights on and fridge cold in a power outage or natural disaster while potentially saving you even more on your monthly utility bills.Our battery systems are currently offered in selected California markets. We hope to offer the service nationwide by the end of the year.
Acid/Lead batteries don't live forever. Matter of fact, no battery technology lasts forever. There are mitigation and maintenance costs involved with batteries. If you're doing the math on how much money solar is saving you, don't forget to factor that in.