Why Buying a Power Station "Big Enough for Everything" Usually Wastes Money
Sizing a power station to run literally every appliance in a home — including high-wattage items like central air conditioning, electric ranges, or clothes dryers — typically requires a capacity and continuous-output rating far beyond what a portable power station is designed or priced for, at a cost that scales steeply; most households get far more practical value by sizing for a focused list of true essentials and accepting that some conveniences simply pause during an outage.
This is a common early instinct when shopping for backup power, and reining it in usually saves a meaningful amount of money without meaningfully reducing real preparedness.
Where the cost curve gets steep
Capacity and continuous-output requirements both scale directly with what you're trying to run — adding a single high-wattage appliance like a window air conditioner or electric water heater to your list can multiply the recommended capacity (and price) several times over compared to a refrigerator-and-electronics-only list.
A more cost-effective way to think about "everything"
Rather than sizing one power station for every appliance simultaneously, many people cover their true must-haves with a moderately sized unit and accept that non-essential, high-wattage conveniences (central AC, an electric oven, a dryer) simply wait until power returns — a trade-off that, as covered in the value-calculator guide, is usually far cheaper than chasing whole-house coverage from a single portable unit.