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When we flip a switch and light fills a room, few, if any of us, contemplate the awesome, unseen power of electrons coursing through filaments to produce that light. We don’t give a thought to the massive power grid of transformers, cables and boosters that surrounds us and makes modern life possible. The generators that turn carbon and sunlight, wind and water into electric energy are over the horizon; out of sight, out of mind. To most folks, the power grid on which we are totally dependent remains a complete mystery that only comes to mind if there is a blackout.