(BPT) - Most households underestimate two things about a public safety power shutoff: how long it typically lasts and how fast it can cost them a full refrigerator and freezer. When a utility company shuts off electricity to reduce wildfire risks, the interruption can stretch well beyond an afternoon. In California specifically, the average public safety power shutoff (PSPS) lasts almost two days, with some outages extending longer than six days.

If you've just gone grocery shopping, a single average-length shutoff is long enough to force you to throw out everything perishable in your fridge. In fact, the U.S. Department of Agriculture (USDA) advises discarding refrigerated perishables such as meat, poultry, fish, eggs and leftovers after just 4 hours without power. A full freezer is at risk of spoiling, too. According to the agency, a full freezer can only maintain a safe temperature for approximately 48 hours.