Plug Load Reduction: The Next Big Hurdle for Net Zero Energy Building Design

Abstract

This paper discusses the importance of reducing plug loads as the industry embraces net zero energy buildings. As buildings have become more energy efficient, plug loads as a proportion of the building load have increased significantly. Data is presented to explain this phenomenon. A methodology and results are discussed for surveys of existing plug loads in an office building and server room similar to many offices around the country, with a view towards reducing energy consumption. Calculations are performed for estimated energy use and potential savings. Finally we discuss developing technologies that can further help to reduce plug load energy use.