Grid-tied electrical system, also called tied to grid or grid tie system, is
a semi-autonomous electrical generation or grid energy storage system
which links to the mains to feed excess capacity back to the local mains
electrical grid. When insufficient electricity is available, electricity
drawn from the mains grid can make up the shortfall. Vice versa when
excess electricity is available, it is sent to the mains grid. When the
Utility or network operator restricts the amount of energy that goes
into the grid, it is possible to prevent any input into the grid by
installing Export Limiting devices.
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