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A Grid of Microgrids: Is it the Right Answer?

The rapid and worldwide rise in distributed generation capacity, especially photovoltaic, has raised the issue on whether the development and operation of large interconnected systems on a national or continental level will vanish. The usual question is: will the large electric energy systems of today, planned and operated in either a centralized or decentralized way, be replaced by various independent smart-city systems, all with self-healing and other eye-catching characteristics, forming “a grid of microgrids?”