In theory this is all well and good, except that in America we have long made electricity in huge quantities in big, centralized power plants. Our grid was built with these factories at its heart. Everything about the way it is structured, from the merest wire to the biggest sub-station, was designed for the effective transit of power from a few massive producers to a wide scatter of users. All of us everywhere use electricity, but we never used to make it. Home solar installations turn this logic on its head without doing much to help reconfigure the grid, which in certain pockets of our
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