It comes as no surprise to energy managers that their electric bills are often the highest during the summer months. This is due, in large part, to the additional electric loads required to keep buildings and facilities comfortable during the hottest days of the year. While the impact on those summer bills may be obvious from a consumption perspective, a less obvious but equally important factor that affects electricity expenses is the installed capacity (ICAP) tag set each summer. In New York, every electricity customer’s ICAP tag is determined by the amount of electricity used when the power grid reaches its system peak. Current New York Independent System Operator (NYISO) rules state that the system peak must occur in July and August on a non-holiday weekday. Last summer, the peak hour occurred at 5:00 PM on July 27, 2020, when the electricity demand on the grid was 30,660 MWs.