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Net metering allows electric utility customers to install qualifying renewable energy systems on their properties and to connect them to an electric utility's distribution system (or grid).
In terms of power consumption, the solar inverter itself uses a small amount of electricity. Typically, it uses less than 1% of the total energy produced by the solar panels.
According to the Clean Energy Council, you can have a solar array that can put out up to 30% more power than the inverter is rated for and remain within safe guidelines.
Zero-crossing distortion has been observed in the ac output current produced by some grid-connected photovoltaic inverters and this can cause a resonant response between the grid impedance and the inverter filter capacitor.