2010 Family and Community Education Martha Keel, Ph.D.

 Watt The amount of electricity a light bulb uses to produce light = It’s not an indication of brightness! 11 watts 40 watts

 Lumens The amount of light given off (sometimes labeled light output)

Incandescent (Watts) Minimum Light Output (Lumens) Compact Fluorescent (Watts) *Energy Star to to ,10018 to ,60023 to ,60030 to 52

 Color Measured on a Temperature Scale called Kelvin (K)

 Life The expected life span of a burning bulb given in hours hours

 Shape A-shape Spiral Globe Tubed Candle Indoor Reflector Outdoor Reflector

 Bases ◦ Most common:  Medium & Candelabra

 Incandescent ◦ Inexpensive ◦ Good color ◦ Work well with devices ◦ Produce heat ◦ Short life

 Halogen ◦ Last longer ◦ Don’t dim with age ◦ Produce extreme heat

 Fluorescent ◦ Efficient ◦ Long life ◦ Many colors, types and sizes ◦ Quiet electronic ballasts ◦ Contain mercury

 Compact Fluorescent Lights (CFLs) ◦ Standard bases ◦ Efficient ◦ Long life ◦ Quick start time ◦ Color ◦ Brightness

 Solid State – LED ◦ Most efficient ◦ Very long life ◦ Colored light ◦ Expensive ◦ Not readily available for residential use

13-Watt Spiral CFL60-Watt Incandescent Initial Purchase$3.77$0.27 Replacement Costs (estimated 7 bulbs) $0.00$1.89 Energy Costs (based on $0.10/kWh, 8,000- hour bulb) $12.00$48.00 Total Cost$15.77$50.16 Estimated Savings$34.39 Using a GE Energy Smart® bulb vs. standard incandescent bulb

 Starting time ◦ Quick turn on time ◦ “instant on”  Color ◦ Wide variety  Bulb position  Outdoor use There are large differences in light, cost and turn-on time among different manufacturers.

 Flicker  Health effects ◦ Ultraviolet (UV) radiation  Mercury ◦ Disposal ◦ Broken bulbs

Type of BulbIncandescentFluorescent (CFL) Power Used (watts)6013 Light Output (lumens) 800 Lifetime (hours)750 – 1,0006,000 – 15,000 Lifecycle Cost*$40$10 *Based on a 6,000-hour CFL, a 1,000-hour incandescent, use of 3 hrs/day, 11.09¢/kWh electric rate, $3.00 CFL and $0.50 Incandescent.

A single 20-watt CFL used in place of a 75-watt incandescent will save about 550 kilowatt-hours over its lifetime. That savings represents nearly 500 pounds of coal not burned, which means 1,300 lbs. of carbon dioxide & 20 lbs. of sulfur dioxide are not released

 Voluntary Action ◦ Public education on CFLs  Incentives ◦ Subsidies and/or give-aways  Legislation ◦ Some counties have banned incandescents ◦ U.S., Australia and Canada set efficiency standards ◦ The Energy Independence and Security Act of 2007 (“The Energy Bill”)

 All bulbs must use 30% less energy than today’s incandescent bulbs by ◦ 2012Phase out 100W bulbs ◦ 2014End with 40W bulbs ◦ 2020All must be 70% more efficient (= to today’s CFLs)  Lighting ~ 20% average household’s energy bill  This bill could cut nation’s electric bill by more than $10 billion a year  Many types of incandescent bulbs are exempt

 Determine where and use  Shape  Size  Base  Color  Lumens  Watts  Type  Label – Energy Star

 Read the Package  Hold the base, not the glass to screw in the bulb  Use CFLs in places where you will have the light on for at least 15 minutes at a time  Most photocells and timers do not work with CFLs  Recycle CFLs  Follow guide-lines to clean up a broken CFL