energy efficient

CFL light bulbs in a bulb

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Incandescent and CFL light bulbs

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pink spiral CFL bulb

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green light bulb character

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light bulb family illustration

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light bulb and ice cream characters

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Spiral light bulb design

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LED light bulb with multiple diodes

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Modern wooden house with solar panels

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glowing compact fluorescent bulb

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Light bulb technology comparison

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glowing blue light bulb

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glowing compact fluorescent lamp

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