Comparing the energy usage in three UNM campus facilities during weekdays when classes are in session (full lines) to the same buildings during weekdays over the 2019-2020 winter break (dotted lines), extrapolated from hourly power meter readings from each building. On average, Woodward Hall used slightly more energy over the break on an hourly basis than it did when classes were in session, while Humanities and George Pearl Hall used about 86.6 percent and 74 percent of their in-session average, respectively, over the break.