Renewable energy resources solar

This process both produces carbohydrate fuel from CO2 and water, and also renews the supply of oxygen, which is essential to life on earth. A careful analysis of what is called renewable resources reveals that all the important ones are renewed by solar energy. This suggests that further scientific attention should be paid to other types of solar processes. 

Other sources of energy worth noting are the extensive wind farms, solar projects, and related emerging unconventional technologies. These renewable resources provide only small quantities of energy to the U.S. economy as of this writing. 

An ideal renewable resource will be one that can be replenished over a relatively short timescale or is essentially limitless in supply. The latter will include solar radiation, geothermal energy, oxygen, carbon dioxide and water. Nor should production or consumption of these resources contribute to the net atmospheric burden of carbon dioxide. Advantage can be taken of the fixation of atmospheric carbon dioxide into plant material by the process of photosynthesis. 

One of the major factors undermining the sustainability of a production process is the depletion of the resources it uses. A quantification of process sustainability should therefore include a parameter that deals with the sustainability of resource utilization, and the construction of such a parameter begins with defining a quantitative measure for the depletion of an individual resource. One way of doing this is to classify each resource as either renewable or nonrenewable, as was done by De Wulf et al. [36]. The distinction made between renewable and nonrenewable resources is that renewable resources are created at least as fast as they are consumed (e.g., solar energy), while nonrenewable resources are consumed faster than they are created (e.g., crude oil). 

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