A planned wildfire-prevention blackout cut power to roughly 940,000 California customers this past weekend, one of the largest such shutoffs on record, with some counties still working through spot outages days later. For most households the story is a spoiled fridge and a few candlelit dinners. For a working cave, it's a different kind of problem: humidity and temperature control that depends on compressors and fans, and a make schedule that doesn't pause just because the grid did.
We've had a handful of California members reach out this week asking essentially the same question in different words — how long can a cave actually go without power before you're looking at real product loss, and what's the minimum setup that buys you enough time to make a plan instead of a guess.
What actually fails first
A refrigerated cave holds its temperature for a while on thermal mass alone — a fully stocked room with good insulation buys you more time than a half-empty one, which is worth remembering before you assume the worst the moment the power drops. What fails first isn't usually the temperature; it's the humidity control, since most cave humidification systems are the first thing to go dark and the first thing you notice once a rind starts drying out faster than expected. A member who runs a small cave outside Sacramento put it plainly after this weekend's outage: "We didn't lose product. We lost two days of consistent rind development, and now I'm second-guessing every wheel from that batch at judging time." That's a real cost, even without a single spoiled lot.
General food-safety guidance for any perishable cold storage is the same during a utility outage as it is during equipment failure: log the time power was lost, log the temperature when you regain access to monitoring, and treat anything that crossed a safe holding threshold for an extended period as a documented decision, not a guess made after the fact. That documentation matters twice — once for your own quality control, and once if a state inspector asks what your plan was the next time they're in your facility.
Building a plan before the next one
If your operation sits anywhere a utility has flagged for wildfire-related shutoff risk, the baseline plan is smaller than it sounds: a portable generator sized to your compressor load, a written checklist of what gets powered first, and a temperature log you can fill out by hand if your monitoring system itself loses power. None of that requires a large capital outlay, and members who already had a one-page plan taped to the cave door this month reported a much calmer few days than those improvising for the first time.
This isn't a one-region problem, either. Storms and equipment failures produce the same underlying question that a planned utility shutoff does, and a plan built for one covers the others. If you want a second set of eyes on your own cold-chain contingency plan, the Food Safety Committee has reviewed a few this month already and is glad to look at another — reach out before your next outage instead of during it.
The International Cheese Federation (ICF) and More Cheese are entirely fictional. This post is demonstration content created for MemberJunction. All people, organizations, events, courses, certifications, figures, and quotations in it are invented, and nothing here represents a real association, a real business, a real person, or real professional advice.