I can see how this would be useful. Yet the concept should be more specific about certain details.
Would this be an all-time peak value? That might unfairly benefit people who are new users, since they won’t have a long history. Picking a constant value, such as the most recent 2-year period, might be more equitable.
How long should the load be sustained? The quote below seems to allow a few minutes of overload, within limits. The startup current of a motor could really increase the peak usage value, but just for a second. This might not “count” for sizing service panels.
Does anyone know of an official answer on how to do this calculation? If the NEC or some other authority defines it, that would be great as a reference standard. Otherwise whatever is implemented will be second-guessed to no end by people with different opinions about the answers to questions such as these.