Living in SoCal - I think everyone should consider redundancy not just for our reef tank but for ourselves. Ideally I would love a Tesla Powerwall but I don’t have solar. As an alternative, I have a Honda 2000i generator. It won’t have enough juice to run the whole house but I can run my fridge, electric pump for water heater, reef tanks (no heater) and small electronics like TV/Internet/cell phones. One gallon of gas can last me 6hrs and I have a 5g reserve, not counting our vehicles. So theoretically can run for several days.
I think portable solar panels / backup solution would be way more quiet and efficient. Curious what do you guys do?