Emergency Power Planning: 72-Hour Backup Checklist

If you can confidently keep essentials running for 72 hours after a major outage, you handle 90% of real-world scenarios — winter storms, hurricane aftermath, derecho damage, extended utility outages. The 72-hour window is the right planning horizon for most households.

Power side

• Generator sized to essentials + 30% headroom
• Fresh oil and air filter in storage; spare set on the shelf
• Fuel rotated within last 6 months, stabilizer added
• Transfer switch installed (manual or automatic) — no backfeeding
• Heavy-gauge extension cords matched to generator output
• CO detector battery tested, monitor installed indoors

Fuel side

• Stored fuel matched to engine type (gas, diesel, or propane)
• Stabilizer treatment dated on the can
• Cans NATO-style 5-gallon, stackable, off-floor
• Refueling funnel + spill mat
• Outdoor operation only, 15+ ft from windows

Comfort and continuity

• LED lanterns and headlamps (not just flashlights)
• Hand-crank or solar radio
• Battery jump pack for vehicles
• Water (1 gallon per person per day)
• Manual can opener, gas-stove or propane single burner

Build your plan

The [Emergency Power Planner](https://gas-and-diesel-engine-equipment-guide.com#eeg-emergency) walks through home size, backup duration, essential appliances, and climate — then generates a generator class recommendation, fuel estimate, and printable readiness checklist.