We've just returned from completing the Florida loop and Bimini, and ran the A/C non stop for 13 days. While I can't quote you specific details on wattage and output, and the technical specifications of the solar panels and electrical system; I can provide some anecdotal Information. We are based in SW Florida, where the average daily temp in summer is in the high 80's-low 90's,with about 85% RH. Our longest run was 115 miles to Marathon Key on a bright sunny day, which took 5 1/2 hours at an average speed of 21mph due to sea conditions, We had the autopilot, fusion radio, chart plotter, radar, fridge and a/c all running. I would say that the radio could be considered an extravagance as far as power consumption. The A/c was set to 74deg. which in actuality gave us around 77 deg. and 40% RH in the cabin. By the time we reached Marathon, we were around 40% SOC . The most important thing I learned from this, is that even if you have an unlimited supply of fuel, you will eventually deplete your batteries regardless of the output of the engine. So the outside environmental conditions, length of your trip, and how much day light is remaining, will all effect your results. We were 100% at marinas during this trip, so we had the opportunity to recharge every night. However, if you are in a hot climate, and plan to be on the hook during the summer months, I would absolutely consider a generator. Feel free to PM me for more details on our experience.
