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Nanogrids are modular building blocks for energy services that support applications ranging from emergency power for commercial buildings to the provision of basic electricity services for people living in extreme poverty. In many ways, nanogrids are just small microgrids, typically serving a single building or a single load. Because of the simplicity, the technology requirements for nanogrids are less complex (in most cases) than those for either microgrids or the utility-dominated smart grid. Ironically, nanogrids are big business. While microgrids exhibit exponential growth and share synergistic properties with many nanogrid segments, substantial deployments of nanogrids are already in place. This is because they actually face less technical and regulatory barriers than their microgrid counterparts. Nanogrids can be synergistic with the growing movement toward enhancing resiliency and therefore complement microgrids, but there are times and situations when microgrids and nanogrids will be competing for the same customers. Despite the small scale of nanogrid solutions, a number of familiar names are active in these nanogrid markets, among them Bosch, Eaton, Emerson Network Power, Johnson Controls, and NRG Energy. Navigant Research forecasts that global nanogrid vendor revenue will grow from $37.8 billion in 2014 to $59.5 billion in 2023.
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