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Plug-In Electric Vehicles
September 25, 2009 | Updated: April 15, 2013
Commercial sale of production-line plug-in hybrid electric vehicles (PHEVs) commenced in 2009 and will increase steadily in the coming years. This resource guide covers PHEV performance, benefits, and limitations, and discusses the potential challenges they pose for electric utilities.
Content type: Resource Guide | Document ID: TAS-RG-20 | Author: Dan Greenberg, Bryan Jungers
Residential-Scale Water Heaters
July 3, 2012
Residential-scale water heaters are widely used in homes and small commercial buildings and represent an immense source of energy consumption. We look at the different options currently available, along with barriers and opportunities for utility demand-side management and demand-response programs.
Content type: Resource Guide | Document ID: TAS-RG-29 | Author: Essie Snell
Water-Cooled Electric Chillers
March 26, 2009 | Updated: May 29, 2012
Although a chiller’s annual energy costs can amount to one-third of its purchase price, choosing one that is most efficient at full or part load might be counterproductive because the ratings don’t measure the efficiency of the overall cooling system.
Content type: Resource Guide | Document ID: CEMC-RG-7 | Author: Peter Criscione, Jarett Zuboy
Regional Technologies Guide
May 24, 2010
This guide is intended to help you identify energy-efficient technologies that could be of particular benefit in a given climate region.
Content type: Resource Guide | Document ID: TAS-RG-23 | Author: Kitty Stevenson and Peter Criscione
Variable Refrigerant Flow Systems
March 26, 2010
Variable refrigerant flow systems promise higher efficiencies and other benefits compared to other heating and cooling solutions. However, the jury is still out as to how well they perform. We discuss both the theoretical and evaluated evidence supporting this up-and-coming technology.
Content type: Resource Guide | Document ID: TAS-RG-19 | Author: Peter Criscione and Joe Shekiro
Commercial Condensing Boilers for Space Heating
March 8, 2010
Commercial condensing boilers cost one and a half times as much as conventional boilers of similar size, but their high efficiency lets you recoup that cost premium quickly through energy savings. They also offer future savings if they’re matched with a properly designed distribution system.
Content type: Resource Guide | Document ID: CEMC-RG-15 | Author: Mary Horsey
Energy-Efficient Track Lighting
February 8, 2010
Metal halide, compact fluorescent, light-emitting diode, and advanced halogen reflector lamps can be used to provide more efficient track lighting than is possible with conventional track lighting.
Content type: Resource Guide | Document ID: TAS-RG-24 | Author: Ira Krepchin
Air-Source Electric Heat Pumps
December 17, 2009
Air-source electric heat pumps are year-round space-conditioning systems capable of providing heating, cooling, and domestic hot water in a single piece of equipment. They often offer a lower capital cost and lower operating cost than electric resistance heating and, in some cases, gas heating.
Content type: Resource Guide | Document ID: TAS-RG-22 | Author: Peter Criscione
Geothermal Heat Pumps for Commercial Applications
August 24, 2009
Geothermal heat pumps use the relatively constant temperature of the earth to provide efficient heating and cooling. This Resource Guide looks at applications in commercial buildings.
Content type: Resource Guide | Document ID: CEMC-RG-11 | Author: Ira Krepchin
Cool Thermal Storage for Unitary Air Conditioners
July 17, 2009
After a decade of development, ice storage for small unitary air conditioners is still expensive but has the potential to be competitive with several utility-scale electricity storage technologies. It remains to be seen if the latest generation of equipment can live up to manufacturer projections.
Content type: Resource Guide | Document ID: TAS-RG-17 | Author: Mary Horsey
Air-Side Economizers
June 12, 2009
Air-side economizers can save 8 to 20 percent of HVAC energy use. However, they are also well known for malfunctioning and wasting significant amounts of energy. You can avoid this by adhering to requirements for properly installing and maintaining economizers.
Content type: Resource Guide | Document ID: CEMC-RG-10 | Author: Peter Criscione
Lighting Controls
February 1, 2009
Controls that vary the time of operation and the intensity of electric lighting can cut energy use, reduce peak demand, improve occupant comfort, and increase productivity.
Content type: Resource Guide | Document ID: TAS-RG-16 | Author: Ira Krepchin
Lighting Maintenance
November 30, 2008
All lighting systems experience a decrease in light output and efficiency over time—lamp light output decreases, dirt accumulates on fixtures, lamps burn out, and control systems drift out of spec or are overridden by occupants.
Content type: Resource Guide | Document ID: CEMC-RG-5 | Author: Ira Krepchin
Lighting for Parking Lots and Garages
October 1, 2008
Well-designed lighting for parking lots and garages is cost-effective, efficient, and enhances the safety of drivers and pedestrians by directing light where it is needed, minimizing glare, distributing illumination evenly, and reducing light trespass.
Content type: Resource Guide | Document ID: CEMC-RG-2 | Author: Jessica Rivas and Ira Krepchin
Network Computer Power Management
July 1, 2008
Billions of kilowatt-hours are wasted every year by idle networked computers in offices, libraries, computer labs, and research facilities. Building managers and network administrators can significantly reduce computing costs if these idle machines are switched off.
Content type: Resource Guide | Document ID: TAS-RG-10 | Author: John Sustar and Spencer Sator
Rooftop Units
March 20, 2008
A single-packaged air-conditioning rooftop unit (RTU) is a type of unitary air conditioner, a category that includes both single-packaged and split systems. RTUs are sometimes referred to as packaged units because they are self-contained.
Content type: Resource Guide | Document ID: TAS-RG-8 | Author: John Sustar and Peter Criscone
High-Performance T8 Fluorescent Lamps
January 22, 2008
Fluorescent lighting technology has achieved new levels of efficiency, color quality, and longevity in a class of products called high-performance T8s. Most carry a price premium, but they are typically more cost-effective replacements for T12s than standard T8s.
Content type: Resource Guide | Document ID: TAS-RG-6 | Author: Peter Criscione
Daylighting Controls
January 8, 2008
Daylighting controls can avoid the common daylighting hazards of underdimming, overdimming and rapid cycling. This Resource Guide covers design and technology fundamentals and alternatives, economics, maintenance, efficiency, market information, and utility program models.
Content type: Resource Guide | Document ID: TAS-RG-3 | Author: Christie Rewey and Ira Krepchin
Occupancy Sensors
October 15, 2007
Occupancy sensors detect the presence or absence of people and turn lights on and off accordingly. Used properly, occupancy sensors can be a cost-effective tool for reducing the operating time and/or light output of lighting systems, cutting energy consumption and peak demand.
Content type: Resource Guide | Document ID: TAS-RG-2 | Author: Kristin Kamm
Ballasts for Full-Size Fluorescent Lamps
August 3, 2007
Ballasts convert line current into the proper voltage, amperage, and waveform to operate fluorescent lamps. The choice of ballast influences how efficiently a lighting system operates and how much light it provides, but users face an often bewildering array of options.
Content type: Resource Guide | Document ID: TAS-RG-1 | Author: Ira Krepchin
