Our big interruptible load helps keep that from happening. Some emergencies can be anticipated, others can't. If we're having a heat wave, we can take action a day or so in advance. But if it's a hot day and we lose one of our big plants for some unexpected reason, we have to act right then. We must be prepared for the suddenness.
Drills enable participants to work out kinks in the procedures.
And the drills give us a chance to test speed dials we've set up to make the process faster and better.