Estimate Your Storage
If you don't know this, check your utility bill or use 30 kWh as a rough starting point.
Estimated storage: 18.0 kWh
Preliminary fit: 10–20 kWh.
Preliminary fit: 10–20 kWh.
HOW TO READ IT
This Is a Planning Estimate — Not an Electrical Design.
The calculator uses your average energy use and desired outage duration to produce a rough storage target. Real-world backup runtime depends on instantaneous loads, HVAC, well pumps, water heaters, battery reserve settings, solar production, temperature and other factors.
For a real recommendation: Southwest Energy can evaluate your loads and help compare whole-home and critical-load backup strategies.