A grid-tied electrical system / tied to grid / grid tie system, is a semi-automated energy storage system which generates electricity and links to the mains to feed excess capacity back to the local mains electrical grid. When there is not enough electricity, energy is drawn from the mains grid to make up for the lack. Conversely, when excess electricity is available, it is sent to the mains grid.
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An off-grid / standalone photovoltaic system is a solar photovoltaic system not connected to the utility grid. With an off-grid system, you are producing your own electricity via solar, wind, microhydro, generator, etc. These systems generally store the electricity for as-need use via a battery bank.
Electric Vehicle Charging Stations
An electric vehicle charging station (EV charging station / electric recharging point / charging point / charge point / electric vehicle supply equipment), is an element in an infrastructure that supplies electric energy for the recharging of electric vehicles. Examples of this include plug-in electric vehicles like: electric cars, neighborhood electric vehicles, and plug-in hybrids.
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