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Siemens Stiftung

Means of lighting in comparison

An incandescent lamp, an energy-saving light bulb, and an LED are compared in terms of costs and efficiency.

The comparison as a table shows that although energy-saving light bulbs and LEDs are more expensive to purchase, their total costs are significantly lower over a period of 10,000 hours. In addition, they are much more efficient than an incandescent lamp.

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