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Colloquially, energy and power are often used interchangeably; but in reality, they are distinct. Energy is the capacity to do work. Power is the rate of use of energy. Specifically: Power = Energy/Time. For instance, 1 W (W) = 1 J/secondJoule (J). Power is the energy per unit time (J/s). It is a rate. In the electricity industry, power is abbreviated as aKilowatt-hour (kWh) “kWh.”

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Global Energy Production and Consumption

  • 章节

  • 发表日期：

    2026年

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  • Marilyn A. Brown,
  • Valerie M. Thomas

摘要

Colloquially, energy and power are often used interchangeably; but in reality, they are distinct. Energy is the capacity to do work. Power is the rate of use of energy. Specifically: Power = Energy/Time. For instance, 1 W (W) = 1 J/secondJoule (J). Power is the energy per unit time (J/s). It is a rate. In the electricity industry, power is abbreviated as aKilowatt-hour (kWh) “kWh.”