This varies a lot from person to person. One person may just need to run a fridge, freezer, a light, and a phone charger. Whereas another persona may need to run their well pump, laundry, 2 fridges, 3 freezers, chargers for everyone in the house, and much more. For this reason, we recommend you use our Kit Calculator or Contact Us and we are happy to find out exactly what system will work best for you.