Home > Commercial Buildings Home > Lighting Types > 1995 CBECS Lighting Equipment

Lighting Equipment - Type and Characteristics of Equipment	Emits	Found In
Incandescent Produces light by electrically heating a tungsten filament Includes energy-efficient incandescent bulbs, such as Reflector or R-Lamps (accent and task lighting), Parabolic Aluminized Reflector (PAR) lamps (flood and spot lighting), and Ellipsoidal Reflector (ER) lamps (recessed lighting) Highly inefficient because much of the energy is lost as heat	14-18 Lumens Per Watt (LPW)	14% of Lit Commercial Floorspace
Standard Fluorescent Lighting with Magnetic Ballast Produces light by passing electricity through mercury vapor, causing the fluorescent coating to glow or fluoresce Includes U-shaped and circular tubes Four times more efficient, consumes 75-85 percent less electricity, and lasts 10 times longer than incandescent Ballast starts and operates the fluorescent light Magnetic ballast is somewhat inefficient because of heat loss	60-67 LPW	77% of Lit Commercial Floorspace
Standard Fluorescent with Electronic Ballast Electronic ballast operates lights using electronic switching power supply circuits and operates at cooler temperatures, weighs less, and is quieter than the magnetic ballasts Directly interchangeable with magnetic ballast Most common electronic ballast operates T-8 lamp More efficient and lasts longer than magnetic ballast	82-90 LPW
Compact Fluorescent Produces light in the same way as the standard fluorescent Includes a round adapter allowing replacement of incandescent Has either electronic or magnetic ballast Lasts 10 to 15 times longer than incandescent	105 LPW	3% of Lit Commercial Floorspace
High-Intensity Discharge (HID) Produces light by passing electricity through gas, which causes the gas to glow Examples are mercury vapor lamps, metal halide lamps, and high- and low-pressure sodium lamps. Has an extremely long life and emits many more lumens per fixture than fluorescent Ballast starts and operates the HID light	50-140 LPW	8% of Lit Commercial Floorspace
Halogen Produces light using a halogen gas, usually iodine or bromine, thatcauses the evaporating tungsten to be redeposited on the filament, thus prolonging its life A newer type of incandescent often used in desk and reading lamps Lasts up to four times longer and more efficient than incandescent	15-22 LPW	2% of Lit Commercial Floorspace

Source: Energy Information Administration, Forms EIA-871A through F of the 1995 Commercial Buildings Energy Consumption Survey.

File Last Modified: January 15, 1998

Contact for Residential Lighting:

robert.latta@eia.doe.gov

Robert Latta

Team Leader, Consumption Analysis & Survey Design

Phone: (202) 586-1385

Fax: (202) 586-0018

Contact for Commercial Lighting:

Joelle Michaels

joelle.michaels@eia.doe.gov

CBECS Manager

Phone: (202) 586-8952

FAX: (202) 586-0018