economode

Is this one still available? I am looking for something like this.

Much in the same vein. I have a small hybrid UPS just being used for a little bit of backup. This is not connected to PVs and charges by the grid. I'm having a 10kw/h PV grid tied system installed in the next week. If the grid goes down there will be no power because of the isolation from the main grid. How can I use the small hybrid to fool the system into delivering power when the grid is down? The hybrid system is too small to route everything through it, thus my question is how to utilse the local 10kW/h system, with grid down, using the hybrid to give the 'signal'? I have the silly idea that once it is running, that the disconnected PVs will charge the hybrid and then deliver the perceived sync while the sun is shining, plus a little bit from the hybrid. Ideas will be very welcome.