David LaChance Pros and Cons of Solar Energy. The core of the sun is estimated to be 27 million degrees Fahrenheit. At this extreme temperature, hydrogen atoms melt, or fuse together releasing tremendous amounts of heat and light. It is hypothesized that this thermonuclear reaction could be used to produce electrical energy for earth's inhabitants. Heather White A Historical Prospective Solar energy has been in use for thousands of years in all imaginable cultures.
Nuclear fusion is, in comparison, a very new discovery.
Both their use is, however, still not advanced enough to substitute the present energy sources.