The deep freeze that settled over the eastern threshold last week did what deep freezes do to a grid: it pushed demand toward the line the engineers draw and hope never to reach. For six hours along the Spokane corridor, the line was reached, and the Backbone began shedding load to keep the wider network whole.

It worked, in the narrow sense. The grid did not collapse. But for thousands of people in the Inland North, the narrow sense was a cold living room and a question the Backbone could not at first answer: who decided this, and why us?

The truth, in real time

What the system did well was tell the truth. Throughout the event, the public status board showed the Inland North transmission corridor in “Degraded” condition — not “Normal,” not a reassuring green. The board carried no estimate it could not keep and no comforting language. A degraded corridor was shown as a degraded corridor.

A status board that only ever shows green is not instrumentation. It is decoration, and decoration gets people killed in a cold snap.— a Backbone operations engineer, Spokane

What the system did poorly was answer for itself. The curtailment was generated by a grid-balancing model and executed automatically, and when citizens asked who had ordered it, there was no name to give. That failure is now the subject of a Court of Review ruling that orders every future curtailment through a named duty officer.

The limit of automation

The episode draws a clean line under a hard question. Automation is how a grid balances faster than a human can think; that is not in dispute, and no one in Spokane is asking for a slower grid. What the Republic asks is narrower and firmer: that speed never become impunity, and that the machine’s recommendation always arrive at a person who can be named, summoned, and answered to.

The cold has since broken. The corridor is back to “Normal” on the board. The standing question — who signs the next cut — now has, by order of the court, a required answer.