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Energy saving lamp. Energy saving lamps are sources of artificial light that employ advanced technology to reduce the amount of electricity used to generate light, relative to traditional filament-burning light bulbs. Examples of energy saving lamps include: Fluorescent lamps; i.e. regular and compact; LED lamp; a Light-emitting electrochemical ...
60 W incandescent light bulb with energy efficiency class E Equivalent 42 W halogen incandescent light bulb with efficiency class C Compact fluorescent lamp LED lamp. Various governments have passed legislation to phase out manufacturing or importation of incandescent light bulbs for general lighting in favor of more energy-efficient alternatives.
This set up performance standards and the phase-out of incandescent light bulbs in order to require the use of more efficient fluorescent lighting. EISA 2007 is an effort to increase lighting efficiency by 25-30%. Opposition to EISA 2007 is demonstrated by the Better Use of Light Bulbs Act and the Light Bulb Freedom of Choice Act.
The third longest lasting light bulb began operation in 1929-30 when BC Electric's Ruskin Generating Station (British Columbia Canada) commenced service. The bulb has been on ever since, and may in fact have the longest continuous service in the world with other bulbs having interruptions in operation during their existence.
The amount of mercury released by one bulb can temporarily exceed U.S. federal guidelines for chronic exposure. [87] [88] Chronic, however, implies exposure for a significant time, and it remains unclear what the health risks are from short-term exposure to low levels of elemental mercury. [88]
Several "extra-bright" sets also use 70 or 105 bulbs, keeping the per-bulb voltage at 3.5 instead of 2.5. LED sets can vary greatly. Common is a set of 60 (2 volts per bulb), but white LED sets use two circuits of 30 (4 volts per bulb).
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