Points on a grid or network where two or more transmission lines join or cross, or where one stage of the energy supply chain meets the next. An interconnection can occur where a generating facility meets transmission facilities, where high-voltage energy transmission corridors cross, or where a utility's distribution facilities connect with the transmission grid. These points can usually be switched or controlled to allow one line to receive more energy than another, or to transfer all energy onto one or more of the connecting lines.

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