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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 Radiant Barrier Systems
August 8, 2012
Radiant barriers can save significant amounts of energy in cooling-load-dominated climates. However, some vendors’ claims are exaggerated or confusing. Arming yourself or your customers with a basic understanding of how they work and what to look for can help ensure effective product selections.
Content type: Resource Guide | Document ID: TAS-RG-27 | Author: Peter Criscione
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
Air-Cooled Electric Chillers
December 28, 2011
Air-cooled electric chillers can be more attractive in hot, humid climates and certain applications in other climates compared to water-cooled chillers and rooftop units. However, in most of North America, water-cooled chillers are more efficient and have a lower life-cycle cost.
Content type: Resource Guide | Document ID: TAS-RG-28 | Author: Peter Criscione
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
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
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
Hotel Room Automation
December 30, 2008
Lights and HVAC are the two biggest users of energy in limited-service motels. Available studies suggest a 25 to 44 percent energy-savings potential per room for automation products and can be used in virtually any hotel or motel to some degree.
Content type: Resource Guide | Document ID: TAS-RG-11 | Author: Peter Criscione and Ira Goldschmidt
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
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
