Safety, uptime, and cost all come back to the same electrical system.

You had the study done. It's in a binder, the box on the audit is checked, and if somebody asks for it you can produce it. Then you think about what has changed since. You added a panel on the east side, a transformer got swapped, somebody re-fed a few circuits during the expansion.

The labels on the equipment still show the numbers from the day that study was finished. The procedures were written around those numbers, and the people who work on that equipment were trained on them. None of that is negligence. It is what happens when a study gets treated as a project with an end date instead of something that has to keep up with the facility. The uncomfortable version is that your paperwork is in better shape than your crew is.

The line goes down again. You call the equipment vendor and he tells you it's the incoming power. You call the utility and they tell you their power is clean and whatever is happening is on your side of the meter. Both of them sound certain. Neither one has put a meter on your panels while it was actually happening, and meanwhile production wants to know when it stops.

Most of the time it turns out to be something inside the fence. A large motor starting, a drive putting noise back onto the system, load that grew past what the equipment was sized for a long time ago. Once in a while it really is the utility, and then you want a recording in your hand before you go and have that conversation.

This one is quieter than the others. There's a charge on the power bill that has been showing up every month for a long time. Finance sees it, assumes it comes with running a facility this size, and codes it. Operations never sees the bill at all.

Somebody has to run the numbers once. What the penalty costs you in a year, what correcting it costs, and how long before it pays for itself. That is a short conversation, and most facilities have never had it.