I have no idea what a 'lue of energy' is:
https://fsmedia.imgix.net/c3/36/f4/2...oof-costs.jpeg
I'd consider the non-solar glass tile alone.
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Three conspiracy theorists walk into a bar --You can't say that is a coincidence.
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