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DOE Transmission Capacity Report

DOE Transmission Capacity Report: Transmission lines, substations, circuit breakers, capacitors, and other equipment
provide more than just a highway to deliver energy and power from generating units to distribution systems. Transmission systems both complement and substitute for generation.
Transmission generally enhances reliability; lowers the cost of electricity delivered to consumers; limits the ability of generators to exercise market power; and provides flexibility to protect against uncertainties about future fuel prices, load growth, generator construction, and other factors affecting the electric system.