And here’s a mind-blowing stat from Bloomberg: “100 million U.S. residential units could physically hold rooftop systems one day, generating by one estimate 3.75 trillion kilowatt hours of electricity a year. In 2011, total U.S. electrical generation from all sources was about 4 trillion kilowatt hours—42% of that from coal.”

via 10 ways Barack Obama can address climate change | RTCC – Responding to Climate Change.

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