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That’s a Tesla superfan (which apparently is a thing) posing in front of the company’s new Powerwall battery, which Elon Musk unveiled today. Meant for homes and businesses, the battery will allow users to store energy from their solar panels, windmills, or whatever else they’re using to charge up their cars and power their homes without any help from the grid. Chris Mooney explains why this could be a really big deal as we head toward our promising future of distributed energy.

Paul Waldman is a weekly columnist and senior writer for The American Prospect. He also writes for the Plum Line blog at The Washington Post and The Week and is the author of Being Right Is Not Enough: What Progressives Must Learn From Conservative Success. Follow @paulwaldman1