Plug and process loads (PPLs) in commercial buildings account for almost 5% of U.S. primary energy consumption. Minimizing these loads is a primary challenge in the design and operation of an energy-efficient building. PPLs are not related to general lighting, heating, ventilation, cooling, and water heating, and typically do not provide comfort to the occupants. They use an increasingly large fraction of the building energy use pie because the number and variety of electrical devices have increased along with building system efficiency. Reducing PPLs is difficult because energy efficiency opportunities and the equipment needed to address PPL energy use in office spaces are poorly understood.
Advanced SearchYour search resulted in 12 resources
This publication details the design, implementation strategies, and continuous performance monitoring of NREL's Research Support Facility data center.
This case study details the design and operations of the National Renewable Energy Laboratory (NREL) Research Support Facility data center and its contributions to energy efficiency.
Plug and process loads in commercial buildings account for 5% of U.S. primary energy consumption. Minimizing these loads is a primary challenge in the design and operation of an energy-efficient building.
There is nothing small about the impact that small commercial buildings have on energy use in the United States. In fact, the 4.6 million small buildings across the nation consume 44% of the overall energy use in buildings, presenting an enormous opportunity to cut costs, energy use, and greenhouse gas emissions. Despite this potential, small building owners and operators face unique challenges that have historically impeded the adoption of widespread energy efficiency solutions. A new report developed by the National Renewable Energy Laboratory (NREL) examines these barriers and suggests a path forward to support cost-effective energy savings for the small buildings and small portfolios sector, which typically has limited resources to pursue energy efficiency solutions.
Small buildings have been left behind in the energy efficiency marketplace because financial and technical resources have flowed to larger commercial buildings (PGL 2013). DOE’s Building Technologies Office (BTO) works with the commercial building industry to accelerate the uptake of energy efficiency technologies and techniques in existing and new commercial buildings (DOE 2013). BTO recognizes the SBSP sector’s potential for significant energy savings and the need for investments in resources that are tailored to this sector’s unique needs. The industry research and recommendations described in this report identify potential approaches and strategic priorities that BTO could explore over the next 3–5 years that will support the implementation of high-potential energy efficiency opportunities for this important sector.
This article, published in High Performance Buildings Magazine, presents the process used for delivering NREL's Research Support Facility (RSF) as a replicable blueprint to achieve a large reduction in building energy use and to adopt a net zero energy approach for large-scale commercial buildings (ZEB) without increasing cost.
This multimedia toolkit is designed to guide energy efficiency program administrators through the process of planning, implementing and measuring a large-scale, deep retrofit energy efficiency program for small-to-medium businesses (SMB). We provide downloadable tools and forms you can adapt for use in your own program.
This guidebook is a reference to help other program sponsors and implementers develop and deliver a full-scale and comprehensive small-to-medium-sized business (SMB) energy efficiency program that can achieve similar results. The online SMART Scale Toolkit accompanies this guidebook.
A demonstration of the SMART Scale model in the Sacramento Municipal Utilities District (SMUD) on over 700 projects indicates that an average whole building electricity savings of 20% from the baseline is possible while remaining cost-effective, with a cost of $0.0346 per lifetime kWh and an estimated total resource cost of 3.1. Previous generations of DI programs were capturing only 10% to 12% of whole building electricity savings through approaches dominated by lighting measures.
The General Service Administration's (GSA) Green Proving Ground (GPG) program worked with a team from the National Renewable Energy Laboratory (NREL) to identify buildings with office setups and equipment distributions typical of the wider GSA building stock. Eight buildings from GSA’s Mid-Atlantic Region, where plug loads average 21%, were selected. In each building, approximately 12 standard power strips with no control capability (the incumbent technology) were replaced with APSs, which monitored and provided power to an array of devices. More than 295 devices were monitored during the study, which consisted of three separate test periods, each four weeks in length. All buildings selected had workstation power management in place.