Traditionally, the energy industry defines power systems relative to their access to a centralized utility grid. An Off-Grid system has no access to the utility grid and functions independently, generating and storing all power on-site. A Grid-Tied system is connected to the utility grid and interacts with it, as needed, utilizing a combination of power produced on-site and from the utility grid, with the option to use the utility grid for primary energy storage. A Grid Edge system is also connected to the utility grid but has intermittent and/or unreliable grid access. Therefore, an Edge of Grid system may include control mechanisms to balance onsite power creation and/or storage in conjunction with grid access.
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