Which Bulb To Choose?. 2010 Family and Community Education Martha Keel, Ph.D. Confused?. Lighting Terms. Watt The amount of electricity a light bulb uses to produce light = It’s not an indication of brightness!. 11 watts. 40 watts. Lighting Terms. Lumens
What’s the Difference? *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.
Environmental Impact 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
Light Bulbs and the Law 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”)
The Energy Bill All bulbs must use 30% less energy than today’s incandescent bulbs by 2012-2014 2012 Phase out 100W bulbs 2014 End with 40W bulbs 2020 All 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
How To Choose? Determine where and use Shape Size Base Color Lumens Watts Type Label – Energy Star
Energy Star Web Guidehttp://www.drmediaserver.com/CFLGuide/index.html
Tips for How to Choose 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