Currently, solar cells are about 30% efficient. How can nanotechnology may change this in the future? What do they expect solar cell efficiency to increase to and what impact would this have on the use of solar cells?
There is more than one type of solar technology and it is getting more efficient all the time. All I know for sure is my PV system generates more energy than I was quoted and I will break even in about 6 years so I'll have about 18 years of free energy which will save me well over $50K. That's efficient enough for me.
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