Non-energy benefits are important drivers of EE. They accrue, for example, at the national level via improved competitiveness, energy security or job creation. From a consumer perspective, often it is the non-energy benefit that motivates decisions to adopt energy efficient measures. The benefits to the consumer through these measures include: (a) improved indoor environment, comfort, health, safety and productivity; (b) reduced noise; (c) labour and time savings; (d) improved process control; (e) increased reliability, amenity or convenience and (f) direct and indirect economic benefits from downsizing or elimination of equipment.
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Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable. The usage of renewable energy sources is very important when considering the sustainability of the existing energy usage of the world. While there is currently an abundance of non-renewable energy sources, such as nuclear fuels, these energy sources are depleting. In addition to being a non-renewable supply, the non-renewable energy sources release emissions into the air, which has an adverse effect on the environment.