Energy fuel source usage

D. We will still be using fossil fuels, oil, gas and coal, but their usage will be curtailed because there will have been a dramatic increase of harnessing of solar energy, wind energy, fusion and fission energy, and other sources. We propose that fusion reactors may become the usable energy source of choice, because of minimum problems of disposal and because of uses of the fissionable products (tritium). These are less of a security risk than fission products (which are plutonium and uranium). 

Based on the fraction these activities constitute of the total power usage, estimate which percentage of total electricity use it would be possible to base on renewable energy sources such as wind or photovoltaic power, used solely to charge either batteries or fuel cells (two separate estimates). 

Renewable energy is of growing inqjortance in satisfying environmental concerns over fossil fuel usage. Wood and other forms of biomass are some of the main renewable energy resources available and provide the only source of renewable liquid, gaseous and solid fuels. Wood and biomass can be used in a variety of ways to provide energy ... 

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