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How it started

With a deep breath, I took the cable seething with 800W of solar power and plugged it directly into a standard wall jack in my home. Nothing sparked, nothing smoked, and by the end of that sunny summer day, my electricity bill had dropped to nearly $0.

As unnerving as it sounds to treat a common household power outlet as a power input, these DIY plug-in sol …

Read the full story at The Verge.