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What are low energy or compact fluorescent light bulbs? (CFLs, known as 'low energy lightbulbs')
35w Energy Saving Spiral Light Bulb 175w Equivalent Very Bright Edison Srew E27 | eBay
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Crompton Ultra-Efficient LED GLS 2.2W E27 3000K 40W Eqv | SimplyLED
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The Best Energy-Efficient Lightbulbs for Your Home
CFL vs. LED: an illuminating look at energy-efficient light bulbs | Advanced Insurance Solutions in Hershey, PA
B4U Energy Saving Light Bulbs Bayonet, 3 Pack CFL Low Energy Light Bulbs 11W=60W, Warm White 2700K, 660 Lumens, BC/ B22 /Bayonet Cap : Amazon.co.uk: Lighting
How Much Money You Can Really Save By Switching To LED Light Bulbs – LED Hut
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Are LED Light Bulbs the Best Way to Save Energy?
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20w (100w) Bayonet Low Energy CFL Light Bulb Warm White
Greening your home - Energy efficient lighting
Consider energy efficient lightbulbs in your home?
It's time to swap out your incandescent light bulbs | Popular Science
Greening your home - Energy efficient lighting
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Power of LED: A Deep Dive into Energy-Saving Light Bulbs
