Puget Sound Electric here in Western WA has a very nice feature showing usage by hour by day (using their smart meters). We live in a relatively small home, and do not use electric heat. Yesterday our "vampire draw" was about 0.5 kwh per hour (12am to 5am -- nothing really active). Once we got up, fired up the coffee pot, and lights, etc. we used 1.3 kwh from 6am to 7am. Pia looks like a good UPS for standard appliances, but as a whole house solution... Folks really need to understand how their home would work using a combinations of Pias. For us, we spent about $1k for a Westinghouse 9,000 kwh generator which runs on propane, and I put in the fairly inexpensive breaker and lock-out in our service panel. Costs were well below $2K. When our power goes out (which it does A LOT), simply fire up the gen, shut down all the high amp circuits in the house panel, and switch service panel input to the gen. Takes less than 5 minutes, and everything works apart from some high amp devices which we can easily live without short term. Having a good backup is important -- moreso with the power system strained and more "once a century" events.

Hey there - First I will concede it's always hard to give an "average" number for something like a fridge, since all fridges consume differently based on usage, ambient temperature, ice makers, overall capacity. But I'd stand behind our numbers - we're not looking to deceive and transparently provide the remaining backup time on the device screen and app. For whatever it's worth, I've gotten familiar with lots of appliance usage data during my time at SPAN, and our average wattage heuristics for appliances are in line with what you'll see from other batteries' materials. Still, always open to hearing ideas for how to help average people put energy usage in context. Would you find a calculator module useful on the website, so you can enter your own usage data if you know it?

A calculator will fail, as in order to use one, requires knowing all of the terminology, and how each variable, alwase effects the other variables in power claculation, and if you know that, the claculator is redundent. My first PV/battery off grid experienxces were in the early 90's, and I was gifted a small solar panel (5w), from a teacher, who had 2 100w panels purchased from the worlds, first and at that time only retailer of PV panels. Today the challenge is to make a system "plug in and forget", and the tech is not, quite, there. I have a whole bunch of random, solar, pv, back up, and UPS, stuff....that keeps comming my way, and I repurpose it for secondary and utilitairian uses, my main house system bieng much larger. And to fair to you, marketing and splianing the solar,pv,battery thing, is a swamp. I had a 92 dodge diesel, the "truckasaurus" that I covered the very large hood in solar, put in a big battery bank.....removed the alternator, and drove it like that year round...in Canada. It would reliably draw a crowd,and became localy iconic, so I have fielded all the questions and seen the hope in peoples faces, and faced the anti solar bunch. My house set up is also highly visible, also bieng a conversational/ideological subject. I can see that your system has the plug in and use part taken care of, and a lot of the pieces for marketing, but determining the crossover point between peoples expectations, and actual performance will determine continued sales success.

Fridges and freezers are pretty power efficient, on the whole, because they're big insulated boxes and the power that leaks through isn't very much. An average of 50W power consumption is not ludicrous for a fairly large, properly functioning fridge (the peak will be larger, since they cycle on and off). It will depend on ambient temperature, of course, but even a pretty beefy fridge running at 100% (which will probably fail in short order since the mechanics are not generally designed for such) is not going to be drawing the 1.6kW you are suggesting.