We may earn a commission when you buy through links on this site, at no extra cost to you. We don't hands-on test products; every spec is taken from the manufacturer and cited. How we make money

What size power station do you actually need?

Pick the things you want to keep running in an outage, enter the hours, and get the watt-hours, the inverter size and the surge you need, plus every model that fits.

Open the sizing calculator

What size power station do I need?

Add appliances and hours to get watt-hours, inverter watts and surge, plus the models that fit.

Runtime calculator

Pick a model, add loads, and see roughly how many hours it will last.

Power station vs generator cost

Fuel and charging cost per outage, using current EIA gas and electricity prices.

Price per watt-hour leaderboard

All 14 tracked models ranked by Wh per dollar at today's manufacturer prices.

Power station for a gas furnace

Why gas heat stops in an outage, and how to size a battery for the blower.

Pennsylvania winter outage planner

Plan 1 to 3 days of essentials in a PA winter, with PUC safety guidance.

How StationSizer works

We don't buy or test products. Instead we keep a spec database of 14 current models, with each figure copied from the manufacturer's own product page and linked, and we build calculators on top of it. Appliance wattages come from published generator-maker charts (Honda and Champion), and every page lists its sources. More about our method.