Power Outage Food Safety Protocol

During a power outage, keep fridge and freezer doors closed, record the time the power failed, and use the 5°C rule to decide what to keep or discard once power returns. A closed commercial fridge holds a safe temperature for roughly 2 to 4 hours, and a full freezer for longer, but the moment a door opens that buffer collapses. The businesses that come through a blackout without a food-poisoning incident or a rejected insurance claim are the ones with a written protocol their staff can follow under pressure. This guide gives you that protocol. Why you need a written plan Power outages are unpredictable, and they usually strike at the worst possible time, mid-service or overnight when nobody is watching. Without a plan, staff improvise: they open the coldroom to check, prop doors while they debate, or worse, keep serving food that has been in the danger zone for hours. A one-page protocol taped inside the office door means anyone on shift knows the first three moves before management even arrives. The temperature danger zone is 5°C to 60°C. Potentially hazardous food that sits in that range for too long grows bacteria to unsafe levels, and no amount of re-chilling makes it safe again, as FSANZ guidance makes clear. Time and temperature are the only things that matter, so the plan is built around both. The first five minutes Record the exact time the power failed. Everything else is measured from this moment. Keep all fridge, freezer and coldroom doors closed. Do not open them to check. Turn off or switch to safe mode any cooking equipment that was left on. Stop preparing and serving potentially hazardous food that relies on refrigeration or hot holding until you can assess it. Notify the manager and, if the outage looks prolonged, the energy provider for an estimated restoration time. Time thresholds: how long is food safe? 0-2 hours: keep doors closed and monitor the clock. Most closed commercial fridges hold safe temperatures during this window. 2-4 hours: if you have a probe and can check quickly, assess high-risk items. Move stock to a backup unit or generator-powered fridge if one is available. A full freezer, kept shut, will typically stay frozen well beyond this point. 4+ hours: assume cold potentially hazardous food has been in the danger zone. If it is above 5°C, discard high-risk items such as raw meat, dairy, cooked rice and prepared salads. These are practical planning windows, not guarantees. A packed coldroom holds temperature longer than a half-empty upright fridge with a poor door seal. Continuous sensors that keep logging on battery power tell you the real internal temperature instead of forcing you to guess — see our temperature monitoring feature. Generator and backup priorities If you have limited generator capacity, decide the order in advance so nobody wastes time debating it during the outage: Walk-in coolroom holding the most high-value, high-risk stock. Freezers — although these hold longest with doors shut, so they can often wait. Critical hot holding only if you intend to keep trading safely. Anything that cannot be kept at or below 5°C or at or above 60°C should be taken off the menu until power is stable. The keep-or-discard decision When power returns, do not trust appearance or smell. Potentially hazardous food can look and smell normal while carrying an unsafe bacterial load. Probe each key item: At or below 5°C the whole time: safe to keep. Above 5°C for under 2 hours: use immediately or return to refrigeration. Above 5°C for 2 to 4 hours: use now, do not re-refrigerate. Above 5°C for over 4 hours: discard. Frozen food that has fully thawed: do not refreeze; treat as chilled and apply the rules above. Documenting the outage for inspectors and insurers Both council inspections and insurance claims rely on records. For every discard, capture the product, quantity, last known temperature, the outage start and end times, the action taken and a photograph. A well-documented outage supports a stock-loss claim and demonstrates to an Environmental Health Officer that you managed the risk correctly. Log it as a single incident with a linked corrective action , and feed the discarded stock into waste and expiry reporting. For the wider risk picture, read our food business insurance guide . Recovery after power returns Probe everything before you resume trading. Remove and record all discarded stock. Sanitise any surfaces where thawed product may have leaked. Restock only once fridges are back at or below 5°C. Note the outage end time so your records show the full duration. Preventing losses before the next outage The best outage plan is one you rarely need because you have reduced both the likelihood and the impact of a blackout. Practical steps include: Battery-backed temperature sensors that keep logging and alert you the moment a fridge starts to warm, even overnight or when the venue is closed. A serviced generator sized for your critical refrigeration, tested regularly so it starts when you need it. Well-maintained seals and full fridges — a packed, well-sealed coldroom holds temperature far longer than a half-empty one with worn gaskets. Staff drills so everyone knows the first five minutes without hunting for a manual. An up-to-date insurance policy that covers stock loss, with the excess and conditions understood in advance. Spending a little on prevention is almost always cheaper than a coldroom full of discarded stock. Communicating during and after an outage Decide in advance who makes the trade-or-close call. If the outage is short and food stayed at or below 5°C, you may keep trading safely with a limited menu. If refrigeration or hot holding cannot be maintained, it is better to pause service than to serve food you cannot verify as safe. Keep customers informed, and once power returns, complete your keep-or-discard checks before reopening the full menu. A calm, documented process protects both your customers and your reputation. How FoodSafety HQ logs