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I agree that we need a closed-circuit DC solution for households. One efficient step-down, and then we plug rechargeable (phones, laptops, etc) in, and power LED lights off it. We still need AC to transmit power to the house, and power high-juice devices, obviously.

Presumably this already exists? Any home-hackers know who's making them?




The off-the-grid folks are surely on top of this. They also have the advantage of a 'natively' DC supply coming off storage batteries.


Use boat lights.




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