An oil lamp is one of the oldest and most reliable forms of off-grid lighting, and it still belongs in your power outage kit in 2026. I have worked mutual aid storm restoration in California, Texas, Florida, and Maine, and I can tell you from experience — when the grid goes down for days or weeks, battery-powered lights run out. Candles are a fire hazard. An oil lamp burns for 20+ hours on a single fill, puts out real usable light, and costs less than a decent flashlight. This guide covers