A demand charge is a fee that makes up a significant portion of a commercial or industrial utility rate cost. The utility provider will charge an organization for their peak usage in a time period. Demand charges can vary by time of day and/or season.
Aurora will only be able to simulate demand charges if you are using Green Button (interval) data.
If you have questions as to why demand charges are not showing up in your utility rate, please see the article entitled Why don't I see demand charges?.