With regard to electricity use, energy efficiency can be considered to be a subset of the larger energy-saving category known as conservation. Explain why this is true and give an example that supports your explanation.

Energy efficiency refers to the usage of less energy to perform the same tasks or produce the same results, while energy conservation involves reducing the total amount of energy consumed via behavior modification, technology upgrade, or process improvement. Energy efficiency is a subset of energy conservation because using energy more efficiently is one way to conserve it. An example that illustrates this is the replacement of an incandescent light bulb, which uses 60 watts of electricity, with an energy-efficient LED light bulb which produces the same amount of light with only 10 watts. The LED light bulb is more energy-efficient, thereby contributing to energy conservation by reducing overall energy consumption without affecting the service quality.