Guides

Plain-English explanations of the math behind the calculator. No brand favorites, no upsell.

How to size a home generator without overpaying: running watts, starting watts, fuel and altitude derates, explained with the math shown.

Portable power station, generator, or home battery? A plain comparison using real Kansas outage data from the EIA.

Running watts vs. starting watts, and why your furnace blower and well pump decide what size backup you need.