Set up a reliable off-grid solar system for emergency electricity and long-term resilience.
A well-designed solar power system can keep critical devices running indefinitely during an extended grid failure. Unlike gas generators, solar systems need no fuel, make no noise, and require minimal maintenance. This guide walks you through sizing, component selection, installation, and maintenance of a practical emergency solar system — from a small phone-charging setup to a whole-home backup.
Step 1 of 8
List every device you need to power. Note its wattage and daily hours of use. Multiply: watts × hours = watt-hours per day. Add 20% for inefficiencies. This is your daily energy budget.
Pro Tip
A phone uses ~15Wh per charge. A LED light uses ~10Wh per hour. A refrigerator uses ~1,500Wh per day.
Continue learning with these related guides.
Keep essential devices running with generators, solar panels, and power banks.
Use radios, mesh networks, and signal methods when cellular and internet are down.
Step-by-step guide to assembling a complete 3-day survival kit for your family.