Cindy, we have 9 370-watt solar panels to go with our 4 SOK batteries above (200AH). our system is more than what we need. we use as little electricity as possible. we don't have AC (we have a whole house fan that cools the place down just fine), all our light bulbs are LED, our primary heat source is wood (with propane in-floor radiant heat as a back up), oven/stove are propane. our batteries hold >2 days worth of electricity

we're careful about our electricity usage, though. if we didn't want to worry about balancing capacity and demand i think we'd double our system. YMMV