Answer:
The concept of integrated, sustainable energy management recognizes that we cannot depend on a single energy source, but that, instead, we need to use a mixture of energy sources. These energy sources have to be reliable, less damaging to the environment, and most importantly, sustainable. So, instead of moving only towards "clean coal technology" or "100% nuclear power," we need to incorporate other alternative energy types. Within IEM, there is also this idea of "micropower." Micropower is a concept that suggests we should move away from large-scale power plants, to more local distribution power systems.