Yes. If your solar system charges a 24V battery rig, then the Technomad Military PA can be driven from the batteries (just as in a vehicle mounted system). Note that the length of time the system will operate is determined by the amp-hour capacity of the battery rig, the recharge rate provided by the solar panels, and by the type of audio the PA system is reproducing. Technomad Military PA systems require at least 65A of 24V current to drive them at full power with full-range audio. If you are playing audio without heavy bass content (i.e. speech, sirens) then the battery draw will be much less than 65A. Technomad Sales can help you design a solar power system to drive a Technomad PA.