Solar Myth #5  When the utility grid goes down I will have back up power.

Fact:  When the power goes out, grid-tied systems go out too. That’s because it’s not safe to be pushing electricity back out onto the utility wires while workers may be trying to fix the problem. Your inverter (the big box near your meter that converts DC electricity created by the panels into usable AC current) recognizes that the grid is out and shuts your system off.  A possible solution is to add batteries into your solar electric system for short term back up