New Buildings Institute (NBI) has developed the first ever set of plug load energy use metrics, which will allow commercial building owners and managers to more easily gain insight into their buildings’ energy use and become more energy efficient. Earlier this year, PECI used the NBI metrics to assess plug load energy use at PECI headquarters in the First and Main building in downtown Portland, Oregon. The study, which informed an energy-saving campaign, resulted in an 18 percent kWh reduction of PECI’s plug load.
Review New Buildings Institute Metrics, “Methodology for Reporting Commercial Office Plug Load Energy Use” and PECI case study, “Analyzing Plug Loads.”
According to the Energy Information Agency, plug load – which is defined as electricity use by equipment that plugs into a building’s electrical outlets – is one of the fastest-growing sources of energy use in commercial buildings. In typical offices, 15 to 20 percent of energy use can be attributed to the plug load of computers, monitors, printers, desk lamps, telephones, etc. In buildings with HVAC and/or lighting systems that have been upgraded or improved to be more energy-efficient, plug load can reach as high as 50 percent of total energy use.
The intent of NBI’s new metrics is to set a benchmark for plug load energy use and make it easier for building owners and managers to spot opportunities to improve energy efficiency. The methodology allows an apples-to-apples comparison of plug load energy use across commercial buildings, even if they have vastly different plug load makeups and characteristics.
PECI helped NBI test the theories behind their metrics during a study conducted in the Portland offices of PECI. PECI’s LEED Platinum office is equipped with an energy management system that allows circuit-level monitoring of energy use throughout the office space. This fact, coupled with PECI’s commitment to the study, practice and influence of responsible energy management, made the site – and the pairing – ideal.
NBI’s metrics showed that PECI’s plug load performance during business hours was already quite good, with numbers comparable to the metrics’ lowest reference value. Overnight, however, PECI’s plug load rated more poorly, with values above the metrics’ median.
“We discovered our higher overnight plug load was primarily due to people leaving their computers in ‘sleep mode’ when they left the office for the day,” said Joan Effinger, Engineering Manager at PECI. “We were excited to use the findings as an opportunity to improve.” PECI launched an internal campaign to motivate people to completely shut off their computers at the end of the day, which contributed to an 18 percent kWh reduction of plug load.
“It was very valuable to conduct such a successful test in a real-world situation,” said Cathy Higgins, Research Director of NBI. “Hopefully this is the first of many cases when people use these new metrics to improve the performance of buildings and reduce energy and cost.”
[1] Plug loads are a part of what is known as Miscellaneous Electrical Loads (MELS)
About PECI
PECI is a nonprofit corporation dedicated to creating the new energy economy. We are leaders in the field of energy resource management, with expertise in designing and implementing energy efficiency programs for utility and government agency clients. Our work helps millions of residential, commercial and industrial utility customers reliably save energy and money. We were founded in 1979 in Portland, Oregon and currently work with clients nationwide. To learn more, visit www.peci.org.
About NBI
Established in 1997, New Buildings Institute (NBI) has been a driving force in advancing energy code stringency, most notably with the adoption of the 2012 International Energy Conservation Code (IECC), which was based largely on NBI's Core Performance Guide--a prescriptive approach to high performance commercial buildings. The organization also advocates for measuring building energy performance in occupancy rather than relying on modeled predictions to assess efficiency levels, and has become a clearinghouse on zero-net energy policies and practices. To learn more about NBI go towww.newbuildings.org or call 360.567.0950.
Related Stories
Architects | Jun 15, 2021
Sandy Hook Permanent Memorial set to break ground
SWA Group designed the project.
Architects | Jun 15, 2021
Chicago Architecture Center and Chicago Architectural Club announce competition calling for new visions for State of Illinois “Thompson Center”
Competition seeks to give State of Illinois Center new life while preserving its architecture and public character.
Wood | Jun 10, 2021
Three AEC firms launch a mass timber product for quicker school construction
TimberQuest brand seeks to avoid overinvestment in production that has plagued other CLT providers.
Office Buildings | Jun 10, 2021
The future of the workplace is social clubs
Office design experts from NELSON Worldwide propose a new concept for the workplace, one that resembles the social clubs of the past.
Multifamily Housing | Jun 3, 2021
Student Housing Trends 2021-2022
In this exclusive video interview for HorizonTV, Fred Pierce, CEO of Pierce Education Properties, developer and manager of off-campus student residences, chats with Rob Cassidy, Editor, MULTIFAMILY Design + Construction about student housing during the pandemic and what to expect for on-campus and off-campus housing in Fall 2021 and into 2022.
Architects | Jun 2, 2021
Two new practice leaders appointed at FGM Architects
FGM Architects appoints Jan Behounek to lead Higher Education and Scott Nall to lead Federal Practice.
Building Technology | Jun 1, 2021
Orro Announces Google Nest Integration for the Orro Switch
Orro, creators of the professional-grade top-of-the-line Orro Smart Living System, today announced the integration of Nest products to Orro. As a certified partner in Google’s Device Access program, this latest Orro integration allows homeowners to have seamless control and access to Nest thermostats and doorbells from any Orro Switch throughout the home – creating a single unified smart home system with advanced, intelligent ambient control.
High-rise Construction | May 27, 2021
The anti-high rise: Seattle's The Net by NBBJ
In this exclusive video interview for HorizonTV, Ryan Mullenix, Design Partner with NBBJ, talks with BD+C's John Caulfield about a new building in Seattle called The Net that promotes wellness and connectivity.
Digital Twin | May 24, 2021
Digital twin’s value propositions for the built environment, explained
Ernst & Young’s white paper makes its cases for the technology’s myriad benefits.
Senior Living Design | May 19, 2021
Senior living design: Post-COVID trends and innovations
Two senior living design experts discuss the latest trends and innovations in the senior living building sector.