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 | Dec 14, 2022
Carol Ross Barney, FAIA, named 2023 AIA Gold Medal honoree
The Board of Directors and the Strategic Council of the American Institute of Architects (AIA) are honoring Carol Ross Barney, FAIA, with the 2023 Gold Medal. The Gold Medal honors an individual whose significant body of work has had a lasting influence on the theory and practice of architecture.
Healthcare Facilities | Dec 14, 2022
In Flint, Mich., a new health center brings together children’s mental and physical health services
Families with children who experience behavioral health issues often have to travel to multiple care facilities to see multiple teams of specialists. In Flint, Mich., the new Center for Children’s Integrated Services at Genesee Health System (GHS), a public mental health provider, brings together all of the GHS children’s programs, including its behavioral health programs, under one roof. It provides families a single destination for their children’s mental healthcare.
Sponsored | Multifamily Housing | Dec 14, 2022
Urban housing revival: 3 creative multifamily housing renovations
This continuing education course from Bruner/Cott & Associates highlights three compelling projects that involve reimagining unlikely buildings for compelling multifamily housing developments.
Multifamily Housing | Dec 13, 2022
Top 106 multifamily housing kitchen and bath amenities – get the full report (FREE!)
Multifamily Design+Construction's inaugural “Kitchen+Bath Survey” of multifamily developers, architects, contractors, and others made it clear that supply chain problems are impacting multifamily housing projects.
Green | Dec 9, 2022
Reaching carbon neutrality in building portfolios ranks high for organizations
Reaching carbon neutrality with their building portfolios ranks high in importance among sustainability goals for organizations responding to a Honeywell/Reuters survey of senior executives at 187 large, multinational corporations. Nearly nine in 10 respondents (87%) say that achieving carbon neutrality in their building portfolio is either extremely (58%) or somewhat (29%) important in relation to their overall ESG goals. Only 4% of respondents called it unimportant.
Green | Dec 9, 2022
Newly formed Net Zero Built Environment Council aims to decarbonize the built world
Global management consulting firm McKinsey recently launched the Net Zero Built Environment Council, a cross-sector coalition of industry stakeholders aiming to decarbonize the built world. The council’s chief goal is to collaboratively create new pathways to cut greenhouse gas emissions from buildings.
High-rise Construction | Dec 7, 2022
SOM reveals its design for Singapore’s tallest skyscraper
Skidmore, Owings & Merrill (SOM) has revealed its design for 8 Shenton Way—a mixed-use tower that will stand 63 stories and 305 meters (1,000 feet) high, becoming Singapore’s tallest skyscraper. The design team also plans to make the building one of Asia’s most sustainable skyscrapers. The tower incorporates post-pandemic design features.
Office Buildings | Dec 7, 2022
Software giant SAP opens engineering academy for its global engineering workforce
Software giant SAP has opened its new SAP Academy for Engineering on the company’s San Ramon, Calif. campus. Designed by HGA, the Engineering Academy will provide professional development opportunities for SAP’s global engineering workforce. At the Engineering Academy, cohorts from SAP offices across the globe will come together for intensive, six-month training programs.
Multifamily Housing | Dec 7, 2022
Canada’s largest net-zero carbon residential community to include affordable units
The newly unveiled design for Canada’s largest net-zero carbon residential community includes two towers that will create a new destination within Ottawa and form a striking gateway into LeBreton Flats. The development will be transit-oriented, mixed-income, mixed-use, and include unprecedented sustainability targets. Dream LeBreton is a partnership between real estate companies Dream Asset Management, Dream Impact, and local non-profit MultiFaith Housing Initiative.
Student Housing | Dec 7, 2022
Cornell University builds massive student housing complex to accommodate planned enrollment growth
In Ithaca, N.Y., Cornell University has completed its North Campus Residential Expansion (NCRE) project. Designed by ikon.5 architects, the 776,000-sf project provides 1,200 beds for first-year students and 800 beds for sophomore students. The NCRE project aimed to accommodate the university’s planned growth in student enrollment while meeting its green infrastructure standards. Cornell University plans to achieve carbon neutrality by 2035.
