In addition to curtailing when there are peak demand, there is a mandatory monthly curtailment. That is what this one wa. We had an earlier 50% curtailment. Because of our low energy equipment now we can run when 50% curtailed which is very helpful. There is nothing worse than having to shut down completely, drain the lines, and the start back up. It takes hours and the pressure on the pipes increases the risk of a break.Curious about the GMP curtailment. I had always assumed that it was during periods of high electricity demand or anticipated demand, and that's why we would see them during holiday/vacation weeks. But this is no peak demand period. mid week. temperatures are moderate. Most of the lifts arent running.