The term "battery-free off-grid system" is a bit confusing, because a battery-free solar PV system can hardly be off-grid. That is, in the absence of batteries, it can only work when the amount of energy produced by solar panels is large enough to power the energy appliances. If there is no additional power supply from the mains or from a generator, the solar system becomes very unreliable.
In our opinion, the answer to this question is rather NO, because we say again, the system would lose its autonomy.