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Grid tied solar power is the most common type of solar installation. Very simply, feeding power into the grid. Your solar panels supply power to the inverter which steps and transforms power into an acceptable form the grid will accept.
Grid-tied inverters need to “sense” power coming from the utilities before it can produce and “push” power that is being harnessed from solar modules. Meaning, if the grid utilities are disrupted and there is a black out. No power will feed from your solar system. This is designed for many reasons, meanly due to safety.

A home utility meter is replace with a bi-directional meter. These meters are designed to count energy going both directions. The power you product will first be used by your home, the remaining electricity will be counted as a credit for later use. All counted to your advantage in reducing your electrical bill.