Plug loads are an increasingly important end-use in commercial office buildings. They currently account for 12-50% of total commercial building energy consumption, and as the efficiencies of regulated major end-uses, such as space conditioning and lighting systems, continue to increase, plug load energy use is expected to rise. This study evaluates patterns in collected plug load data and the effect of a behavior-based intervention to reduce plug load energy consumption.This project leverages a data collection effort originally funded for a study by the California Air Resources Board, where 100 plug load monitoring power strips were installed at individual workstations in the Franklin Building, an office building in Oakland owned by the UC Office of the President (UCOP). Each occupant received one power strip and connected up to four devices to be individually monitored. For this project, only the labeled devices (desktop, laptop, monitor, task light) are included.An analysis of the collected data reveals a clear distinction between work days and non-work days (weekends and holidays). Overall, the monitored occupants have regular work schedules, turn off their equipment at the end of the work day, and do not often stay late or come in on the weekends. Desktops consume the most power per person, followed by monitors and then task lights. Laptop power trends were more difficult to discern because users often disconnect them to work in other locations (that were not monitored). Desktops demonstrate the widest range of power consumption among the devices monitored. During unoccupied periods (overnight and on non-work days), desktops draw the most power, followed by laptops. All devices draw more power overnight on work days than over weekends and holidays, indicating that users are more likely to turn equipment off before a longer break from the office.Much of the literature on reducing plug load energy consumption in commercial buildings is focused on technology-based solutions, such as purchasing new equipment or installing sophisticated controls to turn off equipment when not in use. The literature on changing occupant behavior to reduce energy use is focused on residential occupants, however multiple studies show that even when occupants do not pay their own bills and have no financial incentive to save energy, other factors can encourage behavior change. One such motivating 2 method is by using gamification, or turning an everyday activity into a game to encourage behavior change by making it more fun and interesting.With the help of leadership at UCOP, an online sustainability game, Cool Choices, was initiated in the Fall of 2014 and 30 employees signed up to play. Cool Choices encourages occupant behavior changes to save water, energy, and reduce waste; players earn points for each action they complete at work or at home and compete with each other on teams. Survey responses from game participants showed that players were motivated to play because the game looked fun, and because the actions suggested were ea...