Lights
The US (like many other nations, China included) has been phasing out incandescent light bulbs: 100-Watt bulbs starting in late 2012, 75-Watt bulbs during 2013, and 40- and 60-Watt bulbs during 2014. The US efficiency standard driving this is for bulbs yielding 310-2600 lumens. Europe phased them out earlier.
The primary alternatives are compact fluorescent lights (CFLs), later light-emitting diodes (LEDs). Savings from efficient lighting (better ballasts, reflectors, etc.) are even larger in the commercial sector.
Articles
The LED Light Revolution Has Only Just Begun 0823 - Several ways. Illuminated not by bulbs, but by walls. Shine down, so you can see the stars at night.
The Incandescent Light Bulb Went Away during Gas Stoves Fight 0723
Biden Administration Moves to Replace Compact Fluorescent Lights with LEDs 1222
Biden Flips the Switch on Trump's Incandescent Light Bulb Plan 0422
New US Energy Standards Would Reverse Trump’s War on Lightbulbs 1221
Energy Efficiency Technology Less Accessible in Low-Income Neighborhoods 0518 - focus on LEDs and CFLs
India Launches Massive Push for Clean Power, Lighting, and Cars 0517
US Standards Take the Next Step in a Light Bulb Efficiency Revolution 0216
Solar Company Making a Profit from Poor Africans 1215 - $35 upfront + 45¢/day. That's < the 75¢ cost of energy (60% kerosene) it replaces. The kit includes a PV panel, a battery, 2 LED light bulbs, an LED flashlight, a cell phone charger & a rechargeable radio. When the day’s 45¢ payment is made, a SIM card activates the battery.
Why Compact Fluorescent Light Bulbs Will Be off the Market Soon 0216 - LEDs more efficient, no longer so pricey.
Lighting Paradox - Cheaper, Efficient LEDs Save Energy, So People May Use More 0815
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Ikea to Stop Selling Traditional Light Bulbs and Move to LED Ones 0815
LED Streetlights in Brooklyn Are Saving Energy But Exhausting Residents 0315
The Desirable, All-Natural (and Extremely Hard) Way to Light an Office 0315 - all about daylighting
Copenhagen Lighting the Way to Greener, More Efficient Cities 1214
LED Lights Are a 'Transformative Technology' in the Developing World 1014
US Light Bulb Ban Set to Take Effect 1213
CREE's LED Bulb to Revolutionize Home Lighting 0613
India Seeks Return on Efficient Lighting 0413
LED Bulbs Cheaper and Better 0413
Plastic FIPEL Bulb More Efficient, Better Quality Llght 1212
75-Watt Bulb Has Dim Future 1112
LED to Replace 100-Watt Incandescent Bulb 1112
LED Bulb for Less Than $15 - 0811
LED Wallpaper Could Replace Light Bulbs 0109
Curtains for Incandescent Bulbs 1007
Section Map: Energy Use