I have see a few references to a new SMA grdi tie inverter with "emergency backup" capability. Its not a Sunny Island, rather it looks like an grid tied inverter with small battery bank that is capable of high discharge. It looks like the system actually generates power even when the grid is down and uses the battery to buffer the load when the sun is out. They dont represent it as something that will run for long without sun but I expect if the price is right there are more than a few folks that would be real interested in this inverter, inlcuding myself. Obviously its price dependent.
Anyone have any more info on this unit?