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This technical specification and application guidance document prescribes equipment characteristics and application guidance including controls that support reduced energy use compared to common standard practice.
This Better Buildings Alliance publication provides actionable guidance for the planning, application and specification of devices and systems used to control general lighting in building exteriors and parking structures.
Walgreens has developed a successful program to strategically retire RTUs prior to failure and replace them with high-efficiency units. In just 150 stores, Walgreens realized more than $1 million in savings from material and labor budgets.
A study was commissioned to compare the Rebel unit with a standard reference unit in the field to estimate the seasonal performance of the RTU Challenge unit and the annual savings that can be achieved.
This specification provides detailed selection criteria for five major APSs, and sets standards for modeling APSs. It is intended to help those who procure APSs select the most effective models for their commercial buildings.
DOE to developed this guidance document for use by the food service industry in understanding the basic issues involved in deployment of energy management systems (EMS) in their establishments.
This case study, sponsored by the U.S. Department of Energy, discusses the motivation, implementation, and results of Fresh & Easy’s case retrofit program.
This playbook will help refrigeration designers evaluate multiple applications of refrigeration heat reclaim for supermarket energy conservation. It also includes guidance on operations, maintenance, and measurement/verification.
This Natural Refrigeration Playbook provides guidance to refrigeration system design teams about selecting energy-efficient refrigeration systems that use natural, low-global warming potential (GWP) refrigerants.
This energy only specification provides a description of required performance characteristics resulting in increased energy savings for ULTs in laboratories.
This framework provides a common reference that can be used to understand key distinguishing factors and core attributes of different solutions within the family of EMIS technologies.
This package of materials guides you through the specification, procurement, and selection of an Energy Information System (EIS) or related building energy performance monitoring and diagnostic technology.
When a commercial building owner first considers installing solar PV, the first questions they ask typically involve how the system will be mounted to their roof and its impact on the roof warranty. This fact sheet addresses such common questions as identified by the Better Buildings Alliance’s Renewables Integration Team.
This fact sheet provides technical information on the various factors such as initial costs, operating costs, current light levels, and dimming required to consider when deciding on an LED upgrade for a fluorescent troffer system.
This document provides a framework for standard measurement and verification (M&V) of lighting retrofit and replacement projects.
The potential for energy savings with exterior lighting is large both from a technology efficiency and controls perspective. However, exterior environments can present security and safety challenges that hold lighting as a primary component which can hinder maximum energy savings.
This fact sheet discusses lumen depreciation, measurement of LED useful life, and the features to look for in evaluating LED products.
The LED installation at the T.J.Maxx plaza produced cost savings for both the owner and the tenants.
This document reviews the major design and specification concerns for outdoor area lighting, and discusses the potential for LED luminaires to save energy while providing high quality lighting for outdoor areas.
This report describes actual experiences from field installations of occupancy sensor-controlled LED lighting at two parking structures and two parking lots, resulting in 45% energy savings.
This document provides this type of summary for the available DOE GATEWAY demonstration projects completed to date and offers some rational application results and guidance for planning an LED application.
Adidas implemented a successful planned RTU replacement program to save energy and avoid costly emergency replacements.
Common sizing mistakes (with respect to cooling tonnage and supply fan horsepower) can be controlled with these recommended processes to help project teams avoid those mistakes and ensure effective RTU replacement investments.
This specification provides a description of rooftop unit (RTU) efficiency and functionality characteristics that align with the goals of DOE’s Advanced RTU Campaign for new or replacement installations.
Factsheet describing the High Performance Rooftop Unit Specification.
The decision guides found in this resource were created to help building owners find the right control strategy for PPLs in their buildings.
Various M&V methods are helpful in estimating the payback and justifying future projects and understanding water efficiencies, emissions reductions, maintenance costs and savings, indoor environmental quality (IEQ) improvements, and occupant satisfaction.
This report documents the development of part-load performance curves and their use with the EnergyPlus simulation tool to estimate the potential savings from the use of Rebel units compared to other standard options.
Pacific Northwest National Laboratory, with funding from the U.S. Department of Energy’s (DOE’s) Building Technologies Program, evaluated a number of control strategies that can be implemented in a controller, which can be retrofit into an existing unit, to improve the operational efficiency of packaged heating, ventilation and air-conditioning (HVAC) equipment.
The multi-year research study was initiated to find solutions to improve packaged heating and cooling equipment operating efficiency in the field.
This report summarizes the field demonstration of ARCs installed on nine RTUs serving a 70,000-ft2 exchange store (large retail) and two RTUs, each serving small office buildings located on Joint Base Pearl Harbor-Hickam (JBPHH).
Using the process and strategies outlined in this brochure, the U.S. Department of Energy’s National Renewable Energy Laboratory (NREL) was able to drastically reduce its PPL energy use in the Research Support Facility (RSF).
This paper documents the methodology NREL researchers developed to identify and reduce PPLs as part of the RSF’s low energy design process.
This project demonstrated the performance of commercially available advanced power strips (APSs) for plug load energy reductions in building A4 at Joint Base Pearl Harbor-Hickam (JBPHH), Hawaii.
Presentation on assessing and reducing plug and process loads in commercial office and retail buildings.
This brochure provides an overview of PPLs in retail buildings and describes the process and strategies needed to cost-effectively reduce their energy impact.
In constructing a new research facility for its campus, the National Renewable Energy Laboratory (NREL) project team identified the opportunity to design a world-class, energy-efficient data center to support its operations.
To further this commitment to green building and leading by example, NREL included an ultra-energy-efficient data center in the laboratory’s new Research Support Facility (RSF), which recently received a Leadership in Energy and Environmental Design® (LEED) Platinum designation from the U.S. Green Building Council.
NREL has developed guidance for evaluating and selecting a range of technologies to control plug and process loads.
Each advanced power strip has three outlet types for equipment with various electricity needs. This infographic describes the uses for each outlet type.
GSA’s Green Proving Ground (GPG) program recently assessed the effectiveness of advanced power strips (APS) in managing plugload energy consumption in eight of its buildings.
This fact sheet summarizes the energy saving benefits of advanced power strips.
This report addresses gaps in actionable knowledge that would help reduce the plug load capacities designed into buildings.
This brochure addresses gaps in actionable knowledge that can help reduce the plug load capacities designed into buildings.
List of currently qualified products available for sale in the U.S. that meet the DOE/CBEA Distribution Transformer Specification.
DOE commissioned NREL to partner with two hospitals (MGH and SUNY UMU) to collect data on the energy used for multiple thermal and electrical end-use categories.
List of currently qualified products available for sale in the U.S. that meet the DOE/CBEA Heat Pump Water Heater Specification.
This report breaks down best practices and guidelines for conducting case retrofits by project stage, from initial planning through project completion and system monitoring.
Customers can borrow money directly from banks or other lenders to pay for energy efficiency projects.