Critical Loads Panel
A critical loads panel is a separate sub-panel that contains only the circuits you want backed up during an outage — typically refrigerator, well pump, key lighting, internet/router, garage door opener, maybe a freezer and a charging outlet. The critical loads panel is fed by the backup power source; everything else stays on the main panel and goes dark during an outage.
Why this design: A critical-loads panel limits backup power to selected circuits, reducing the load on your battery or generator. Battery runtime depends on usable capacity, charge level and electricity use; compatible solar can extend it when production is available. Generator runtime depends on fuel availability and operating requirements. Only the selected circuits receive backup power.
Also known as: Backup loads panelsub-panel for critical loadspartial-home backup
Why it matters in Santa Cruz County
This is the typical setup for budget-conscious PSPS preparedness. A whole-home backup is the alternative — significantly more expensive but no compromise during outages.
Sunrise's take
We walk through both options on every backup power consultation. Whole-home backup makes sense if you have specific medical equipment, work-from-home obligations, or just don't want to think about which circuits work during outages. Critical loads is the value-engineered path.
Met this term in a quote or inspection report?
A free whole-home inspection turns jargon into a written assessment of your actual house — you keep the report either way.