We had a 3 day brown out about 10 years ago, Orange Grove and Shannon. Poured a slab and built a Generator hut, 75 amp generator, 60 amp tranfer panel. It ran whole house when we had swamp cooler, now with AC we would buy a portable AC just to knock down the heat. Funny thing is only used it once for about 5 hours on a Sat. morning a few years ago. I run it about 29 minutes a month to keep it lubed and running good. Great peace of mind to know you can watch TV, play on computer, have fridge and microwave, lights and fans. But most of all Reef, FW, and ponds al running normal.