I would love to use some solar energy in my home. What can you tell me about how much it costs to begin? Is there some sort of federal tax credit? What all do I need to buy (panels, batteries, etc)? Can a homeowner do the installation or must it be done by a professional? Would also appreciate any websites for retailers of solar energy items. Thank you very much for any information.
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?
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