I find the non-solar tiles interesting for their durability.
Cost-wise, were it my money, the winner is vertical panels sized to fit a standing seam metal roof.
www.remodelista.com: Remodeling 101: 15 Luxuries Worth Considering in Your Remodel
'Luxuries' one and two are a standing seam roof and solar panels (ten is acoustic insulation for bathrooms).
Standing Seam Metal Roofs, Photovoltaic Systems, Guarantees, Standards
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Because much of what is in the published literature is nonsense,
and much of what isn’t nonsense is not in the scientific literature.
-- Sabine Hossenfelder
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