Sixteen solar panels putting out almost 3,000 Watts, according to the owner. Some are connected in series, some in parallel, flowing through several controllers, feeding 12- and 24-volt battery banks. And other stuff that was beyond my understanding. It sounded mighty impressive, though.
It's enough power to smelt iron or run a particle accelerator and still have plenty left over to chill a couple of meat lockers to subzero temperatures.
Many RV owners say that with the AC unit(s), vents, hatches and antennas on the roof they don't have room for many solar panels. So, duh, build a rack over all that rooftop clutter.