In practice, when a solar system without a battery is installed, power is routed from the panels to the grid. There it gets âoestabilizedâ by being blended with other power with the right frequency (60hz). Then you get your power from the grid, from that pool of mixed power, yours and others.
So if the grid is gone, your panels are configured to shut down, because there is no place to push excess power (when panels are overproducing) or pull extra power (when you home wants more than panels produce)
A battery is needed to stem the ebbs and floods so to speak.
And yes this is a simplified way of looking at it. But it should help.