01/14/2025, 5:03 am EST
The waves of cold air into the U.S. during January 2025 has caused the projected U.S. population weight HDD to 1060 for the mid-winter month which eclipses the previous high of 1045 in 2014 (Table 1). The cold spikes are vividly indicated in important energy sectors such as PJM-East, PJM-West, and ERCOT.