Whole-Home Emergency Power Audit Calculator

Volume I  ·  May 2026  ·  534 words

Select the appliances and devices you need to power during an outage to estimate total daily watt-hour consumption. This calculator assumes realistic duty cycles (refrigerators cycle on/off, lights are intermittent) and includes inverter efficiency losses. Results recommend a battery capacity with 20% reserve for degradation and unexpected loads.

For continuous loads like refrigerators, the "hours/day" field represents compressor runtime, not clock hours. A 24-hour entry at the default 33% duty cycle reflects approximately 8 hours of actual compressor operation. Use the emergency backup comparison to match your required capacity to a specific power station model.