They have to sync up and feed power in phase with the grid when its up as well, in the case of net metering setups.
Even without net metering.
Yes, the "balcony" style setups, sync to the power outlet of the house, which could be the grid, or it could augment a generator when the grid is down.
Even without net metering.
Yes, the "balcony" style setups, sync to the power outlet of the house, which could be the grid, or it could augment a generator when the grid is down.