Why did light bulb lifetimes get shorter?

VeritasiumAbout 2 min readAug 10, 2025Watch original
THE SUMMARYAI-generated

Key Concepts:

  • Feebas Cartel: A secret agreement between major light bulb manufacturers to control the global light bulb market.
  • Planned Obsolescence: Deliberately reducing the lifespan of a product to increase sales.
  • Cartel: An agreement between competing firms to control prices or exclude entry of a new competitor in a market.
  • 1,000-hour Limit: The enforced lifespan limit for light bulbs set by the Feebas Cartel.

Formation of the Feebas Cartel:

In late 1924, executives from leading light bulb companies, including Phillips, International General Electric, Tokyo Electric, Osram (Germany), and Associated Electric (UK), convened in Geneva, Switzerland. This meeting resulted in the formation of the Feebas Cartel, named after the Greek god of light, Phoebus. The cartel's primary objective was to control the global supply of light bulbs through collaborative efforts.

Consolidation of the Light Bulb Industry:

The early electrical industry consisted of numerous small light bulb manufacturers. However, by 1924, these had largely consolidated into major corporations, each dominating specific regions. These corporations included the companies that would form the Feebas Cartel.

The Threat of Long-Lasting Light Bulbs:

The biggest threat to the light bulb manufacturers was the increasing lifespan of light bulbs. As an example, Osram's light bulb sales dropped from 63 million in 1923 to 28 million in 1924 due to the increased longevity of their products. This decline in sales prompted the cartel to take action.

Enforcing Planned Obsolescence:

The Feebas Cartel agreed to reduce the lifespan of their light bulbs to 1,000 hours, effectively cutting the existing average lifespan by almost half. This practice is known as planned obsolescence.

Enforcement Mechanism:

To enforce the 1,000-hour limit, each manufacturer was required to submit sample bulbs from their factories for testing. These bulbs were tested on specialized test stands. If a bulb lasted significantly longer than 1,000 hours, the manufacturer was fined. Records exist documenting these fines being issued to companies that violated the agreement.

Conclusion:

The Feebas Cartel represents a clear example of planned obsolescence and anti-competitive practices in the early 20th century. By deliberately reducing the lifespan of light bulbs, the cartel members aimed to increase sales and maintain their dominance in the global market. The enforcement mechanism, involving testing and fines, demonstrates the seriousness with which the cartel pursued its objectives.

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