In Resource efficient and cleaner production, when we talk about the energy, we focus a lot Energy efficiency. Energy efficiency means all changes that product in a reduction in the energy spent for a given energy service (lighting, heating,‚Ä¶).
The reduction, sometime is caused by technical changes (e.g by replacing the old equipment by the new), by a suitable organization and management (e.g a good service planning reduce the waste time and this contribute a lot on energy consumption,..).
Regarding to Industrial ecology and energy, the use less energy is crucial in design/ redesign or operational phase in the manufacture area. The impact assessment of the utilization of energy and reduction of greenhouse gas emissions in industries is recommended in order to improve the economical and environmental benefits.