What is the main goal of energy efficiency?

The primary goal of energy efficiency is to achieve higher energy output for the same energy input. This approach emphasizes optimizing how energy is utilized in processes, systems, and technologies. By improving energy efficiency, organizations and individuals can accomplish the same tasks or produce the same outputs while utilizing less energy, which can lead to cost savings and reduced environmental impact. This is especially relevant in various fields, including information technology and industrial processes, where energy consumption can be significant.

In contrast, the other options do not align with the goal of energy efficiency. Consuming more energy or eliminating energy usage entirely would not advance the principle of efficiency, which is focused on maximizing productive output while minimizing energy waste. Reducing energy output alone is also not indicative of efficiency, as it does not necessarily reflect an optimal use of resources. Therefore, the correct choice highlights the essence of energy efficiency in terms of maximizing effective energy use.