EEVblog #938 - Tesla Solar Roofs - Are They Viable?

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Solar Freakin' Roofs!
How viable is Tesla's Solar Roof concept?
What did Elon Musk not mention at the product launch?
How efficient are they?
How much energy is required to manufacture them?
Energy required for existing roof construction:
International Energy Agency on Efficiency:
US Government on PV Energy Payback:
List of solar single companies that have gone bust:
Dow Chemical Solar shingles goes out of business:
Solar shingle efficiency: /
Sun position and angle/elevation calculator:
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