Home Energy Resilience
Know How Much Backup Power You Actually Need.
Pick what needs to stay on. Choose how long. Zaron shows the backup capacity your home may need, before you spend money on the wrong system.
Planning estimate. Refrigerator and freezer use annual kWh placeholders (400 and 450 kWh/yr). Other loads use representative running watts for the full duration, so cycling loads may need less. Assumes 90% efficiency and a 20% margin. Replace with your own labels.
See my full backup planLoad-by-load pages, from refrigerators to well pumps.
Plan from short outages to multi-day events.
Assumed efficiency and sizing margin, shown on every result.
Appliance database
What Do You Need to Keep Running?
Start with what matters during an outage. Each page explains the power, runtime and backup capacity involved.
KITCHEN & FOODOutage planning
Plan for the Outage You're Actually Facing.
Different outages demand different plans. Start from the scenario that matches your reality, not the worst case someone is selling you.
Short Outage
Keep the essentials running.
START THIS PLAN → One day24 hrFull-Day Outage
Build a practical one-day plan.
START THIS PLAN → Extended48–72 hrMulti-Day Outage
Plan capacity, charging and priorities.
START THIS PLAN → No installPlug-inRenter / Apartment
Backup options without permanent installation.
START THIS PLAN →Don't Start With a Product. Start With Your Power Need.
A 1 kWh system may be plenty for one home and completely wrong for another. Size your essentials first, then compare systems that actually fit.
Calculation methodology
Numbers You Can See. Assumptions You Can Check.
0.90 and 1.20 are planning assumptions, not universal constants. This is not a guarantee of runtime. See the full method →
Evidence
Know Where the Numbers Come From.
DOE / ENERGY STAR
Annual energy use (kWh/year) is a standardized estimate; actual consumption varies with use and conditions.
ENERGY STAR →Specifications
Startup and surge figures come from manufacturer specifications. If there is no reliable data, Zaron says to verify.
Planning method
Sizing uses 0.90 efficiency and 1.20 margin, shown with every result. No mystery scores. No invented surge numbers.
Sources & data →Operating principles
Built Around Better Decisions.
Independent Approach
We explain how recommendations are made.
Transparent Methodology
Our assumptions and data sources are visible.
No Fake Testing
If we didn't physically test it, we say so.
Ready to size your backup?
Stay Powered.
Build the Whole Backup Plan.
Add the appliances that matter, choose your outage duration, and see total energy and startup checks in one place.
Open full backup calculator →