Holiday Energy Saving Initiative

Since 2005, NC State’s Holiday Energy Savings Initiative (HESI) has safely lowered building temperatures and utility costs in unoccupied campus buildings during the winter holiday period when the university is closed for about 10 consecutive days. 


The 2018-19 Holiday Energy Saving Initiative was in effect in stages from December 19, 2018 to January 6, 2019.

  • Temperatures in classrooms and teaching labs were adjusted Dec. 19 (after final exams) through Jan. 6 (the day before spring semester classes began).
  • Temperatures in residence halls were impacted Dec. 20 – Jan.1 while those buildings were closed to students.
  • All other university buildings not exempt from the program had temperatures set back while the university was officially closed Dec. 22 through Jan. 1. See full calendar


Program Results

To date, the program has saved the taxpayers of North Carolina more than $4 million. Read more about the program’s success in 2018-19