Home Backup Power Sizing Worksheet
Work out what you actually need to keep running when the grid goes down
Get the free PDFWhat’s inside
Start with the outage you are planning for
The right backup system depends on how long you need to run and what must stay on. Answer these three questions first; everything else follows.
Step 1 — List your critical loads
Look at the nameplate on each appliance or use a plug-in energy meter for a week. Running watts is what it draws continuously; starting watts is the surge when a motor st…
Step 2 — Size the system
Two numbers decide the equipment: peak power (kW) and stored energy (kWh).
Step 3 — Pick the approach
Each option trades cost, noise, fuel, and permitting differently.
Step 4 — Questions for the installer
Bring this page to every quote.
Who it’s for
Owners, facility managers, and project leads who want to make the decision with their own numbers before a vendor makes it for them. Delivered as a fillable PDF you can print or complete on screen.
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Home Backup Power Sizing Worksheet
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ZenSmart Home Solutions · zensmarthomesolutions.com