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Scheduling power output from generating plants used to be relatively easy with little need for realtime information. Today, Independent Power Producers (IPPs) need to run their facilities at maximum efficiency to lower generation costs and increase profits. However, `green´ energy sources, generate power in a somewhat unpredictable fashion, upsetting the balance of power supplied to the grid. These factors, along with an increased interest in efficient energy usage overall, have necessitated the utilities’ need to continually adjust generation, demand or both – all on a real-time basis. A smarter grid that enables two-way communication is required to make this a reality.本回答被提问者和网友采纳